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<p class="MsoNormal"><span lang="EN-US">Dear all<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">I am using SNES for solving a large nonlinear system for Material Point Method. But it always diverged after server steps, I think there are some bug in the computation of Jacobian matrix. Do anyone have practical approach
for identified these bugs in a large matrix? Currently, I saved the matrix to a txt file and load it to Matlab for checking. Is there function for checking Petsc Mat in Petsc itself?
<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">Cheers<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Lei <o:p></o:p></span></p>
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