<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">With PETSc 3.7.2, changing the ASM type does not seem to have any effect for serial jobs. E.g. using ksp/examples/tutorials/ex2:</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">$ ./ex2 -m 32 -n 32 -pc_type asm -pc_asm_blocks 8 -ksp_view -ksp_monitor_true_residual -pc_asm_type basic</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 0 KSP preconditioned resid norm 7.227368482718e+00 true resid norm 1.166190378969e+01 ||r(i)||/||b|| 1.000000000000e+00</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 1 KSP preconditioned resid norm 2.680806990415e+00 true resid norm 3.440170689976e+00 ||r(i)||/||b|| 2.949922029898e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 2 KSP preconditioned resid norm 1.537918148738e+00 true resid norm 1.676069837125e+00 ||r(i)||/||b|| 1.437218028335e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 3 KSP preconditioned resid norm 1.025836188311e+00 true resid norm 1.127193636507e+00 ||r(i)||/||b|| 9.665605692131e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 4 KSP preconditioned resid norm 7.465807140977e-01 true resid norm 7.063999312309e-01 ||r(i)||/||b|| 6.057329437543e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 5 KSP preconditioned resid norm 5.806789214514e-01 true resid norm 5.248222587585e-01 ||r(i)||/||b|| 4.500313741419e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 6 KSP preconditioned resid norm 4.709931353737e-01 true resid norm 4.142974151217e-01 ||r(i)||/||b|| 3.552571026079e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 7 KSP preconditioned resid norm 4.123520053531e-01 true resid norm 3.428306005637e-01 ||r(i)||/||b|| 2.939748147011e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 8 KSP preconditioned resid norm 3.623327779165e-01 true resid norm 3.188334125692e-01 ||r(i)||/||b|| 2.733973957589e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 9 KSP preconditioned resid norm 2.416851769562e-01 true resid norm 3.243055253185e-01 ||r(i)||/||b|| 2.780896937301e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 10 KSP preconditioned resid norm 1.215247217085e-01 true resid norm 1.564954190637e-01 ||r(i)||/||b|| 1.341937147536e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 11 KSP preconditioned resid norm 6.497470510985e-02 true resid norm 8.673119491739e-02 ||r(i)||/||b|| 7.437138608026e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 12 KSP preconditioned resid norm 3.246036728276e-02 true resid norm 4.591618222897e-02 ||r(i)||/||b|| 3.937280143707e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 13 KSP preconditioned resid norm 1.435458873790e-02 true resid norm 1.985166297182e-02 ||r(i)||/||b|| 1.702266056197e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 14 KSP preconditioned resid norm 6.960292630481e-03 true resid norm 9.778813102206e-03 ||r(i)||/||b|| 8.385263057007e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 15 KSP preconditioned resid norm 3.604789592169e-03 true resid norm 4.449537275931e-03 ||r(i)||/||b|| 3.815446736805e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 16 KSP preconditioned resid norm 2.347335356674e-03 true resid norm 2.530581623538e-03 ||r(i)||/||b|| 2.169955840122e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 17 KSP preconditioned resid norm 1.606443885426e-03 true resid norm 1.835719869720e-03 ||r(i)||/||b|| 1.574116801875e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 18 KSP preconditioned resid norm 8.685134492648e-04 true resid norm 1.250934036178e-03 ||r(i)||/||b|| 1.072667086555e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 19 KSP preconditioned resid norm 4.160062164697e-04 true resid norm 5.589755065266e-04 ||r(i)||/||b|| 4.793175424931e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 20 KSP preconditioned resid norm 2.264387793673e-04 true resid norm 2.733953335794e-04 ||r(i)||/||b|| 2.344345644671e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 21 KSP preconditioned resid norm 1.572062148327e-04 true resid norm 1.655081111255e-04 ||r(i)||/||b|| 1.419220344382e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 22 KSP preconditioned resid norm 1.046603808940e-04 true resid norm 1.170344120764e-04 ||r(i)||/||b|| 1.003561804204e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 23 KSP preconditioned resid norm 7.323396102053e-05 true resid norm 9.226622743289e-05 ||r(i)||/||b|| 7.911763730589e-06</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 24 KSP preconditioned resid norm 3.961819569402e-05 true resid norm 5.397694170644e-05 ||r(i)||/||b|| 4.628484566487e-06</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">KSP Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: gmres</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> GMRES: restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> GMRES: happy breakdown tolerance 1e-30</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> maximum iterations=10000, initial guess is zero</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerances: relative=9.18274e-06, absolute=1e-50, divergence=10000.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> left preconditioning</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using PRECONDITIONED norm type for convergence test</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">PC Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: asm</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: total subdomain blocks = 8, amount of overlap = 1</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: restriction/interpolation type - BASIC</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Local solve is same for all blocks, in the following KSP and PC objects:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> KSP Object: (sub_) 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: preonly</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> maximum iterations=10000, initial guess is zero</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerances: relative=1e-05, absolute=1e-50, divergence=10000.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> left preconditioning</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using NONE norm type for convergence test</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> PC Object: (sub_) 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: icc</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 0 levels of fill</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerance for zero pivot 2.22045e-14</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using Manteuffel shift [POSITIVE_DEFINITE]</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> matrix ordering: natural</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> factor fill ratio given 1., needed 1.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Factored matrix follows:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqsbaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=160, cols=160</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> package used to perform factorization: petsc</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=443, allocated nonzeros=443</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> block size is 1</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> linear system matrix = precond matrix:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=160, cols=160</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=726, allocated nonzeros=726</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> not using I-node routines</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> linear system matrix = precond matrix:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=1024, cols=1024</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=4992, allocated nonzeros=5120</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> not using I-node routines</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">Norm of error 0.000445244 iterations 24</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">$ ./ex2 -m 32 -n 32 -pc_type asm -pc_asm_blocks 8 -ksp_view -ksp_monitor_true_residual -pc_asm_type restrict</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 0 KSP preconditioned resid norm 7.227368482718e+00 true resid norm 1.166190378969e+01 ||r(i)||/||b|| 1.000000000000e+00</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 1 KSP preconditioned resid norm 2.680806990415e+00 true resid norm 3.440170689976e+00 ||r(i)||/||b|| 2.949922029898e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 2 KSP preconditioned resid norm 1.537918148738e+00 true resid norm 1.676069837125e+00 ||r(i)||/||b|| 1.437218028335e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 3 KSP preconditioned resid norm 1.025836188311e+00 true resid norm 1.127193636507e+00 ||r(i)||/||b|| 9.665605692131e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 4 KSP preconditioned resid norm 7.465807140977e-01 true resid norm 7.063999312309e-01 ||r(i)||/||b|| 6.057329437543e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 5 KSP preconditioned resid norm 5.806789214514e-01 true resid norm 5.248222587585e-01 ||r(i)||/||b|| 4.500313741419e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 6 KSP preconditioned resid norm 4.709931353737e-01 true resid norm 4.142974151217e-01 ||r(i)||/||b|| 3.552571026079e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 7 KSP preconditioned resid norm 4.123520053531e-01 true resid norm 3.428306005637e-01 ||r(i)||/||b|| 2.939748147011e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 8 KSP preconditioned resid norm 3.623327779165e-01 true resid norm 3.188334125692e-01 ||r(i)||/||b|| 2.733973957589e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 9 KSP preconditioned resid norm 2.416851769562e-01 true resid norm 3.243055253185e-01 ||r(i)||/||b|| 2.780896937301e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 10 KSP preconditioned resid norm 1.215247217085e-01 true resid norm 1.564954190637e-01 ||r(i)||/||b|| 1.341937147536e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 11 KSP preconditioned resid norm 6.497470510985e-02 true resid norm 8.673119491739e-02 ||r(i)||/||b|| 7.437138608026e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 12 KSP preconditioned resid norm 3.246036728276e-02 true resid norm 4.591618222897e-02 ||r(i)||/||b|| 3.937280143707e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 13 KSP preconditioned resid norm 1.435458873790e-02 true resid norm 1.985166297182e-02 ||r(i)||/||b|| 1.702266056197e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 14 KSP preconditioned resid norm 6.960292630481e-03 true resid norm 9.778813102206e-03 ||r(i)||/||b|| 8.385263057007e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 15 KSP preconditioned resid norm 3.604789592169e-03 true resid norm 4.449537275931e-03 ||r(i)||/||b|| 3.815446736805e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 16 KSP preconditioned resid norm 2.347335356674e-03 true resid norm 2.530581623538e-03 ||r(i)||/||b|| 2.169955840122e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 17 KSP preconditioned resid norm 1.606443885426e-03 true resid norm 1.835719869720e-03 ||r(i)||/||b|| 1.574116801875e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 18 KSP preconditioned resid norm 8.685134492648e-04 true resid norm 1.250934036178e-03 ||r(i)||/||b|| 1.072667086555e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 19 KSP preconditioned resid norm 4.160062164697e-04 true resid norm 5.589755065266e-04 ||r(i)||/||b|| 4.793175424931e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 20 KSP preconditioned resid norm 2.264387793673e-04 true resid norm 2.733953335794e-04 ||r(i)||/||b|| 2.344345644671e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 21 KSP preconditioned resid norm 1.572062148327e-04 true resid norm 1.655081111255e-04 ||r(i)||/||b|| 1.419220344382e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 22 KSP preconditioned resid norm 1.046603808940e-04 true resid norm 1.170344120764e-04 ||r(i)||/||b|| 1.003561804204e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 23 KSP preconditioned resid norm 7.323396102053e-05 true resid norm 9.226622743289e-05 ||r(i)||/||b|| 7.911763730589e-06</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 24 KSP preconditioned resid norm 3.961819569402e-05 true resid norm 5.397694170644e-05 ||r(i)||/||b|| 4.628484566487e-06</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">KSP Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: gmres</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> GMRES: restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> GMRES: happy breakdown tolerance 1e-30</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> maximum iterations=10000, initial guess is zero</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerances: relative=9.18274e-06, absolute=1e-50, divergence=10000.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> left preconditioning</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using PRECONDITIONED norm type for convergence test</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">PC Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: asm</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: total subdomain blocks = 8, amount of overlap = 1</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: restriction/interpolation type - RESTRICT</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Local solve is same for all blocks, in the following KSP and PC objects:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> KSP Object: (sub_) 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: preonly</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> maximum iterations=10000, initial guess is zero</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerances: relative=1e-05, absolute=1e-50, divergence=10000.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> left preconditioning</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using NONE norm type for convergence test</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> PC Object: (sub_) 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: icc</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 0 levels of fill</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerance for zero pivot 2.22045e-14</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using Manteuffel shift [POSITIVE_DEFINITE]</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> matrix ordering: natural</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> factor fill ratio given 1., needed 1.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Factored matrix follows:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqsbaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=160, cols=160</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> package used to perform factorization: petsc</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=443, allocated nonzeros=443</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> block size is 1</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> linear system matrix = precond matrix:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=160, cols=160</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=726, allocated nonzeros=726</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> not using I-node routines</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> linear system matrix = precond matrix:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=1024, cols=1024</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=4992, allocated nonzeros=5120</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> not using I-node routines</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">Norm of error 0.000445244 iterations 24</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">$ ./ex2 -m 32 -n 32 -pc_type asm -pc_asm_blocks 8 -ksp_view -ksp_monitor_true_residual -pc_asm_type interpolate</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 0 KSP preconditioned resid norm 7.227368482718e+00 true resid norm 1.166190378969e+01 ||r(i)||/||b|| 1.000000000000e+00</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 1 KSP preconditioned resid norm 2.680806990415e+00 true resid norm 3.440170689976e+00 ||r(i)||/||b|| 2.949922029898e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 2 KSP preconditioned resid norm 1.537918148738e+00 true resid norm 1.676069837125e+00 ||r(i)||/||b|| 1.437218028335e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 3 KSP preconditioned resid norm 1.025836188311e+00 true resid norm 1.127193636507e+00 ||r(i)||/||b|| 9.665605692131e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 4 KSP preconditioned resid norm 7.465807140977e-01 true resid norm 7.063999312309e-01 ||r(i)||/||b|| 6.057329437543e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 5 KSP preconditioned resid norm 5.806789214514e-01 true resid norm 5.248222587585e-01 ||r(i)||/||b|| 4.500313741419e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 6 KSP preconditioned resid norm 4.709931353737e-01 true resid norm 4.142974151217e-01 ||r(i)||/||b|| 3.552571026079e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 7 KSP preconditioned resid norm 4.123520053531e-01 true resid norm 3.428306005637e-01 ||r(i)||/||b|| 2.939748147011e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 8 KSP preconditioned resid norm 3.623327779165e-01 true resid norm 3.188334125692e-01 ||r(i)||/||b|| 2.733973957589e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 9 KSP preconditioned resid norm 2.416851769562e-01 true resid norm 3.243055253185e-01 ||r(i)||/||b|| 2.780896937301e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 10 KSP preconditioned resid norm 1.215247217085e-01 true resid norm 1.564954190637e-01 ||r(i)||/||b|| 1.341937147536e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 11 KSP preconditioned resid norm 6.497470510985e-02 true resid norm 8.673119491739e-02 ||r(i)||/||b|| 7.437138608026e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 12 KSP preconditioned resid norm 3.246036728276e-02 true resid norm 4.591618222897e-02 ||r(i)||/||b|| 3.937280143707e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 13 KSP preconditioned resid norm 1.435458873790e-02 true resid norm 1.985166297182e-02 ||r(i)||/||b|| 1.702266056197e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 14 KSP preconditioned resid norm 6.960292630481e-03 true resid norm 9.778813102206e-03 ||r(i)||/||b|| 8.385263057007e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 15 KSP preconditioned resid norm 3.604789592169e-03 true resid norm 4.449537275931e-03 ||r(i)||/||b|| 3.815446736805e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 16 KSP preconditioned resid norm 2.347335356674e-03 true resid norm 2.530581623538e-03 ||r(i)||/||b|| 2.169955840122e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 17 KSP preconditioned resid norm 1.606443885426e-03 true resid norm 1.835719869720e-03 ||r(i)||/||b|| 1.574116801875e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 18 KSP preconditioned resid norm 8.685134492648e-04 true resid norm 1.250934036178e-03 ||r(i)||/||b|| 1.072667086555e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 19 KSP preconditioned resid norm 4.160062164697e-04 true resid norm 5.589755065266e-04 ||r(i)||/||b|| 4.793175424931e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 20 KSP preconditioned resid norm 2.264387793673e-04 true resid norm 2.733953335794e-04 ||r(i)||/||b|| 2.344345644671e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 21 KSP preconditioned resid norm 1.572062148327e-04 true resid norm 1.655081111255e-04 ||r(i)||/||b|| 1.419220344382e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 22 KSP preconditioned resid norm 1.046603808940e-04 true resid norm 1.170344120764e-04 ||r(i)||/||b|| 1.003561804204e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 23 KSP preconditioned resid norm 7.323396102053e-05 true resid norm 9.226622743289e-05 ||r(i)||/||b|| 7.911763730589e-06</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 24 KSP preconditioned resid norm 3.961819569402e-05 true resid norm 5.397694170644e-05 ||r(i)||/||b|| 4.628484566487e-06</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">KSP Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: gmres</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> GMRES: restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> GMRES: happy breakdown tolerance 1e-30</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> maximum iterations=10000, initial guess is zero</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerances: relative=9.18274e-06, absolute=1e-50, divergence=10000.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> left preconditioning</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using PRECONDITIONED norm type for convergence test</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">PC Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: asm</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: total subdomain blocks = 8, amount of overlap = 1</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: restriction/interpolation type - INTERPOLATE</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Local solve is same for all blocks, in the following KSP and PC objects:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> KSP Object: (sub_) 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: preonly</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> maximum iterations=10000, initial guess is zero</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerances: relative=1e-05, absolute=1e-50, divergence=10000.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> left preconditioning</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using NONE norm type for convergence test</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> PC Object: (sub_) 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: icc</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 0 levels of fill</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerance for zero pivot 2.22045e-14</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using Manteuffel shift [POSITIVE_DEFINITE]</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> matrix ordering: natural</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> factor fill ratio given 1., needed 1.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Factored matrix follows:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqsbaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=160, cols=160</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> package used to perform factorization: petsc</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=443, allocated nonzeros=443</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> block size is 1</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> linear system matrix = precond matrix:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=160, cols=160</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=726, allocated nonzeros=726</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> not using I-node routines</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> linear system matrix = precond matrix:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=1024, cols=1024</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=4992, allocated nonzeros=5120</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> not using I-node routines</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">Norm of error 0.000445244 iterations 24</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">$ ./ex2 -m 32 -n 32 -pc_type asm -pc_asm_blocks 8 -ksp_view -ksp_monitor_true_residual -pc_asm_type none</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 0 KSP preconditioned resid norm 7.227368482718e+00 true resid norm 1.166190378969e+01 ||r(i)||/||b|| 1.000000000000e+00</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 1 KSP preconditioned resid norm 2.680806990415e+00 true resid norm 3.440170689976e+00 ||r(i)||/||b|| 2.949922029898e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 2 KSP preconditioned resid norm 1.537918148738e+00 true resid norm 1.676069837125e+00 ||r(i)||/||b|| 1.437218028335e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 3 KSP preconditioned resid norm 1.025836188311e+00 true resid norm 1.127193636507e+00 ||r(i)||/||b|| 9.665605692131e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 4 KSP preconditioned resid norm 7.465807140977e-01 true resid norm 7.063999312309e-01 ||r(i)||/||b|| 6.057329437543e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 5 KSP preconditioned resid norm 5.806789214514e-01 true resid norm 5.248222587585e-01 ||r(i)||/||b|| 4.500313741419e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 6 KSP preconditioned resid norm 4.709931353737e-01 true resid norm 4.142974151217e-01 ||r(i)||/||b|| 3.552571026079e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 7 KSP preconditioned resid norm 4.123520053531e-01 true resid norm 3.428306005637e-01 ||r(i)||/||b|| 2.939748147011e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 8 KSP preconditioned resid norm 3.623327779165e-01 true resid norm 3.188334125692e-01 ||r(i)||/||b|| 2.733973957589e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 9 KSP preconditioned resid norm 2.416851769562e-01 true resid norm 3.243055253185e-01 ||r(i)||/||b|| 2.780896937301e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 10 KSP preconditioned resid norm 1.215247217085e-01 true resid norm 1.564954190637e-01 ||r(i)||/||b|| 1.341937147536e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 11 KSP preconditioned resid norm 6.497470510985e-02 true resid norm 8.673119491739e-02 ||r(i)||/||b|| 7.437138608026e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 12 KSP preconditioned resid norm 3.246036728276e-02 true resid norm 4.591618222897e-02 ||r(i)||/||b|| 3.937280143707e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 13 KSP preconditioned resid norm 1.435458873790e-02 true resid norm 1.985166297182e-02 ||r(i)||/||b|| 1.702266056197e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 14 KSP preconditioned resid norm 6.960292630481e-03 true resid norm 9.778813102206e-03 ||r(i)||/||b|| 8.385263057007e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 15 KSP preconditioned resid norm 3.604789592169e-03 true resid norm 4.449537275931e-03 ||r(i)||/||b|| 3.815446736805e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 16 KSP preconditioned resid norm 2.347335356674e-03 true resid norm 2.530581623538e-03 ||r(i)||/||b|| 2.169955840122e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 17 KSP preconditioned resid norm 1.606443885426e-03 true resid norm 1.835719869720e-03 ||r(i)||/||b|| 1.574116801875e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 18 KSP preconditioned resid norm 8.685134492648e-04 true resid norm 1.250934036178e-03 ||r(i)||/||b|| 1.072667086555e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 19 KSP preconditioned resid norm 4.160062164697e-04 true resid norm 5.589755065266e-04 ||r(i)||/||b|| 4.793175424931e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 20 KSP preconditioned resid norm 2.264387793673e-04 true resid norm 2.733953335794e-04 ||r(i)||/||b|| 2.344345644671e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 21 KSP preconditioned resid norm 1.572062148327e-04 true resid norm 1.655081111255e-04 ||r(i)||/||b|| 1.419220344382e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 22 KSP preconditioned resid norm 1.046603808940e-04 true resid norm 1.170344120764e-04 ||r(i)||/||b|| 1.003561804204e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 23 KSP preconditioned resid norm 7.323396102053e-05 true resid norm 9.226622743289e-05 ||r(i)||/||b|| 7.911763730589e-06</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 24 KSP preconditioned resid norm 3.961819569402e-05 true resid norm 5.397694170644e-05 ||r(i)||/||b|| 4.628484566487e-06</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">KSP Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: gmres</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> GMRES: restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> GMRES: happy breakdown tolerance 1e-30</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> maximum iterations=10000, initial guess is zero</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerances: relative=9.18274e-06, absolute=1e-50, divergence=10000.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> left preconditioning</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using PRECONDITIONED norm type for convergence test</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">PC Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: asm</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: total subdomain blocks = 8, amount of overlap = 1</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: restriction/interpolation type - NONE</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Local solve is same for all blocks, in the following KSP and PC objects:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> KSP Object: (sub_) 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: preonly</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> maximum iterations=10000, initial guess is zero</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerances: relative=1e-05, absolute=1e-50, divergence=10000.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> left preconditioning</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using NONE norm type for convergence test</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> PC Object: (sub_) 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: icc</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 0 levels of fill</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerance for zero pivot 2.22045e-14</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using Manteuffel shift [POSITIVE_DEFINITE]</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> matrix ordering: natural</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> factor fill ratio given 1., needed 1.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Factored matrix follows:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqsbaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=160, cols=160</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> package used to perform factorization: petsc</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=443, allocated nonzeros=443</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> block size is 1</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> linear system matrix = precond matrix:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=160, cols=160</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=726, allocated nonzeros=726</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> not using I-node routines</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> linear system matrix = precond matrix:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=1024, cols=1024</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=4992, allocated nonzeros=5120</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> not using I-node routines</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">Norm of error 0.000445244 iterations 24</div></div><div class=""><br class=""></div><div class="">Is this setting meant only to affect how communication between processors is handled?</div><div class=""><br class=""></div><div class="">Also, the MULTIPLICATIVE variant does not seem to behave as I would expect --- for this same example, if you switch from ADDITIVE to MULTIPLICATIVE, the solver converges slightly more slowly:</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">$ ./ex2 -m 32 -n 32 -pc_type asm -pc_asm_blocks 8 -ksp_view -ksp_monitor_true_residual -pc_asm_local_type MULTIPLICATIVE</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 0 KSP preconditioned resid norm 7.467363913958e+00 true resid norm 1.166190378969e+01 ||r(i)||/||b|| 1.000000000000e+00</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 1 KSP preconditioned resid norm 2.878371937592e+00 true resid norm 3.646367718253e+00 ||r(i)||/||b|| 3.126734522949e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 2 KSP preconditioned resid norm 1.666575161021e+00 true resid norm 1.940699059619e+00 ||r(i)||/||b|| 1.664135714560e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 3 KSP preconditioned resid norm 1.086140238220e+00 true resid norm 1.191473615464e+00 ||r(i)||/||b|| 1.021680196433e-01</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 4 KSP preconditioned resid norm 7.939217314942e-01 true resid norm 8.059317628307e-01 ||r(i)||/||b|| 6.910807852344e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 5 KSP preconditioned resid norm 6.265169154675e-01 true resid norm 5.942294290555e-01 ||r(i)||/||b|| 5.095475316653e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 6 KSP preconditioned resid norm 5.164999302721e-01 true resid norm 4.585844476718e-01 ||r(i)||/||b|| 3.932329197203e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 7 KSP preconditioned resid norm 4.472399844370e-01 true resid norm 3.884049472908e-01 ||r(i)||/||b|| 3.330544946136e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 8 KSP preconditioned resid norm 3.445446366213e-01 true resid norm 4.008290378967e-01 ||r(i)||/||b|| 3.437080644166e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 9 KSP preconditioned resid norm 1.987509894375e-01 true resid norm 2.619628925380e-01 ||r(i)||/||b|| 2.246313271505e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 10 KSP preconditioned resid norm 1.084551743751e-01 true resid norm 1.354891040098e-01 ||r(i)||/||b|| 1.161809481995e-02</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 11 KSP preconditioned resid norm 6.108303419460e-02 true resid norm 7.252267103275e-02 ||r(i)||/||b|| 6.218767736436e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 12 KSP preconditioned resid norm 3.641579250431e-02 true resid norm 4.069996187932e-02 ||r(i)||/||b|| 3.489992938829e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 13 KSP preconditioned resid norm 2.424898818735e-02 true resid norm 2.469590201945e-02 ||r(i)||/||b|| 2.117656127577e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 14 KSP preconditioned resid norm 1.792399391125e-02 true resid norm 1.622090905110e-02 ||r(i)||/||b|| 1.390931475995e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 15 KSP preconditioned resid norm 1.320657155648e-02 true resid norm 1.336753101147e-02 ||r(i)||/||b|| 1.146256327657e-03</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 16 KSP preconditioned resid norm 7.398524571182e-03 true resid norm 9.747691680405e-03 ||r(i)||/||b|| 8.358576657974e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 17 KSP preconditioned resid norm 3.043993613039e-03 true resid norm 3.848714422908e-03 ||r(i)||/||b|| 3.300245390731e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 18 KSP preconditioned resid norm 1.767867968946e-03 true resid norm 1.736586340170e-03 ||r(i)||/||b|| 1.489110501585e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 19 KSP preconditioned resid norm 1.088792656005e-03 true resid norm 1.307506936484e-03 ||r(i)||/||b|| 1.121177948355e-04</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 20 KSP preconditioned resid norm 4.622653682144e-04 true resid norm 5.718427718734e-04 ||r(i)||/||b|| 4.903511315013e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 21 KSP preconditioned resid norm 2.591703287585e-04 true resid norm 2.690982547548e-04 ||r(i)||/||b|| 2.307498497738e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 22 KSP preconditioned resid norm 1.596527181997e-04 true resid norm 1.715846687846e-04 ||r(i)||/||b|| 1.471326396435e-05</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 23 KSP preconditioned resid norm 1.006766623019e-04 true resid norm 1.044525361282e-04 ||r(i)||/||b|| 8.956731080268e-06</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 24 KSP preconditioned resid norm 5.349814270060e-05 true resid norm 6.598682341705e-05 ||r(i)||/||b|| 5.658323427037e-06</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">KSP Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: gmres</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> GMRES: restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> GMRES: happy breakdown tolerance 1e-30</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> maximum iterations=10000, initial guess is zero</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerances: relative=9.18274e-06, absolute=1e-50, divergence=10000.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> left preconditioning</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using PRECONDITIONED norm type for convergence test</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">PC Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: asm</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: total subdomain blocks = 8, amount of overlap = 1</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: restriction/interpolation type - BASIC</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Additive Schwarz: local solve composition type - MULTIPLICATIVE</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Local solve is same for all blocks, in the following KSP and PC objects:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> KSP Object: (sub_) 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: preonly</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> maximum iterations=10000, initial guess is zero</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerances: relative=1e-05, absolute=1e-50, divergence=10000.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> left preconditioning</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using NONE norm type for convergence test</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> PC Object: (sub_) 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: icc</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> 0 levels of fill</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> tolerance for zero pivot 2.22045e-14</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> using Manteuffel shift [POSITIVE_DEFINITE]</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> matrix ordering: natural</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> factor fill ratio given 1., needed 1.</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Factored matrix follows:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqsbaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=160, cols=160</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> package used to perform factorization: petsc</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=443, allocated nonzeros=443</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> block size is 1</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> linear system matrix = precond matrix:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=160, cols=160</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=726, allocated nonzeros=726</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> not using I-node routines</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> linear system matrix = precond matrix:</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> Mat Object: 1 MPI processes</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> type: seqaij</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> rows=1024, cols=1024</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total: nonzeros=4992, allocated nonzeros=5120</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> total number of mallocs used during MatSetValues calls =0</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class=""> not using I-node routines</div><div style="margin: 0px; font-size: 13px; font-family: Menlo; color: rgb(245, 245, 245); background-color: rgb(0, 0, 0);" class="">Norm of error 0.000292304 iterations 24</div></div><div class=""><br class=""></div><div class="">Thanks,</div><div class=""><br class=""></div><div class="">-- Boyce</div><div class=""><br class=""></div></body></html>