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<div>Hi, I am using TS to solve a nonlinear DAE problem. I got an error below:</div>
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<div>[0]PETSC ERROR: --------------------- Error Message ------------------------------------</div>
<div>[0]PETSC ERROR: !</div>
<div>[0]PETSC ERROR: TSStep has failed due to DIVERGED_NONLINEAR_SOLVE, increase -ts_max_snes_failures or make negative to attempt recovery!</div>
<div>[0]PETSC ERROR: ------------------------------------------------------------------------</div>
<div>[0]PETSC ERROR: Petsc Development HG revision: 6e0ddc6e9b6d8a9d8eb4c0ede0105827a6b58dfb HG Date: Mon Mar 11 22:54:30 2013 -0500</div>
<div>[0]PETSC ERROR: See docs/changes/index.html for recent updates.</div>
<div>[0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.</div>
<div>[0]PETSC ERROR: See docs/index.html for manual pages.</div>
<div>[0]PETSC ERROR: ------------------------------------------------------------------------</div>
<div>[0]PETSC ERROR: ./dynSim on a arch-complex named olympus.local by d3m956 Wed Mar 27 18:12:05 2013</div>
<div>[0]PETSC ERROR: Libraries linked from /pic/projects/ds/petsc-dev/arch-complex/lib</div>
<div>[0]PETSC ERROR: Configure run at Tue Mar 12 14:32:37 2013</div>
<div>[0]PETSC ERROR: Configure options --with-scalar-type=complex --with-clanguage=C++ PETSC_ARCH=arch-complex --with-fortran-kernels=generic</div>
<div>[0]PETSC ERROR: ------------------------------------------------------------------------</div>
<div>[0]PETSC ERROR: TSStep() line 2442 in src/ts/interface/ts.c</div>
<div>[0]PETSC ERROR: TSSolve() line 2553 in src/ts/interface/ts.c</div>
<div>[0]PETSC ERROR: simu() line 420 in "unknowndirectory/"simulation.C</div>
<div>[0]PETSC ERROR: runSimulation() line 83 in "unknowndirectory/"dynSim.h</div>
<div>Run simulation time: 0.0317168</div>
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<div>What does this error imply for?</div>
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<div>My ftime = 0.5, and the timestep is 0.001, and the solution method I’m using is TSBEULER</div>
<div><i>PetscReal ftime=0.5;</i></div>
<div><i>ierr = TSSetInitialTimeStep(ts, 0.0, 0.001); CHKERRQ(ierr);</i></div>
<div><i>ierr = TSSetType(ts, TSBEULER); CHKERRQ(ierr);</i></div>
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<div>Is there any command option I should use when I run the code?</div>
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<div>Thanks,</div>
<div>Shuangshuang</div>
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