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<div>I met a case where MUMPS returned an out-of-memory code but PETSc continued to run. When PETSc calls MUMPS, it checks if (A->erroriffailure). I added -mat_error_if_failure, but it did not work since it was overwritten by MatSetErrorIfFailure(pc->pmat,pc->erroriffailure)</div>
<div>Does it suggest we should add a new option -pc_factor_error_if_failure and check it in PCSetFromOptions_Factor()?</div>
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<div>--Junchao Zhang</div>
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<div dir="ltr">On Fri, Oct 5, 2018 at 8:12 PM Zhang, Hong <<a href="mailto:hzhang@mcs.anl.gov">hzhang@mcs.anl.gov</a>> wrote:<br>
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<div dir="ltr">Mike:<br>
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<div>Hello PETSc team:<br>
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<div>I am trying to solve a PDE problem with high-order finite elements. The matrix is getting denser and my experience is that MUMPS just outperforms iterative solvers.</div>
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<div>For certain problems, MUMPS just fail in the middle for no clear reason. I just wander if there is any suggestion to improve the robustness of MUMPS? Or in general, any suggestion for interative solver with very high-order finite elements?</div>
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<div>What error message do you get when MUMPS fails? Out of memory, zero pivoting, or something?</div>
<div> Hong</div>
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