<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=ZH-CN style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi, </span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I am solving a Linear system with LU factorization. But failed with the following error.</span></p><p class=MsoNormal><span lang=EN-US>Is there some suggestions on debugging this error? Thanks!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>The configure.log of PETSc is attached!</span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>```</span><span lang=EN-US style='font-size:12.0pt'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Assertion failed in file ./src/include/mpir_request.h at line 446: req != NULL</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libmpi.so.12(+0x2e6072) [0x7fd51f801072]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libmpi.so.12(+0x20a8a8) [0x7fd51f7258a8]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libmpi.so.12(+0x2a0318) [0x7fd51f7bb318]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libmpi.so.12(MPI_Isend+0x498) [0x7fd51f600ae8]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libmpifort.so.12(PMPI_ISEND+0x51) [0x7fd51cf0acd1]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(__dmumps_buf_MOD_dmumps_buf_send_contrib_type3+0x145b) [0x7fd520b1011d]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_buf_send_contrib_type3_i_+0xb8) [0x7fd520af584c]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_build_and_send_cb_root_+0x167e) [0x7fd520b6252c]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_fac_stack_+0xf00) [0x7fd520c60c88]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(__dmumps_fac_par_m_MOD_dmumps_fac_par+0xade) [0x7fd520c56e27]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_fac_par_i_+0x216) [0x7fd520c000c2]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_fac_b_+0x975) [0x7fd520c00a3f]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_fac_driver_+0x5d2f) [0x7fd520bcd6cf]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_+0x2c6a) [0x7fd520b5c499]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_f77_+0x190b) [0x7fd520aef9f7]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_c+0xe10) [0x7fd520aedfb4]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(+0x50d7a3) [0x7fd5200f77a3]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(MatLUFactorNumeric+0x369) [0x7fd520272431]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(+0xc67f73) [0x7fd520851f73]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(PCSetUp+0x621) [0x7fd5208d0029]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(KSPSetUp+0xd57) [0x7fd5206ffcf2]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(+0xb17d4c) [0x7fd520701d4c]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(KSPSolve+0x13) [0x7fd520704f13]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/lib64/python3.6/site-packages/petsc4py/lib/default/PETSc.cpython-36m-x86_64-linux-gnu.so(+0xe18eb) [0x7fd52169c8eb]</span></p><p class=MsoNormal><span lang=EN-US>/lib64/libpython3.6m.so.1.0(_PyCFunction_FastCallDict+0x353) [0x7fd5307a3a73]</span></p><p class=MsoNormal><span lang=EN-US>/lib64/libpython3.6m.so.1.0(+0x167dd0) [0x7fd5307a3dd0]</span></p><p class=MsoNormal><span lang=EN-US>/lib64/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x474) [0x7fd5307cc5b4]</span></p><p class=MsoNormal><span lang=EN-US>/lib64/libpython3.6m.so.1.0(PyEval_EvalCodeEx+0x337) [0x7fd5307ae727]</span></p><p class=MsoNormal><span lang=EN-US>/lib64/libpython3.6m.so.1.0(+0x17369e) [0x7fd5307af69e]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/lib64/python3.6/site-packages/petsc4py/lib/default/PETSc.cpython-36m-x86_64-linux-gnu.so(+0x71ed3) [0x7fd52162ced3]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/lib64/python3.6/site-packages/petsc4py/lib/default/PETSc.cpython-36m-x86_64-linux-gnu.so(+0xd75f6) [0x7fd5216925f6]</span></p><p class=MsoNormal><span lang=EN-US>/home/z2yang/opt/firedrake-env/firedrake-mini-petsc/lib64/python3.6/site-packages/petsc4py/lib/default/PETSc.cpython-36m-x86_64-linux-gnu.so(+0x717bf) [0x7fd52162c7bf]</span></p><p class=MsoNormal><span lang=EN-US>internal ABORT - process 0</span></p><p class=MsoNormal><span lang=EN-US>```</span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Best wishes,</span></p><p class=MsoNormal><span lang=EN-US>Zongze</span></p></div></body></html>