<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Tue, Oct 25, 2016 at 10:54 AM, Abdullah Ali Sivas <span dir="ltr"><<a href="mailto:abdullahasivas@gmail.com" target="_blank">abdullahasivas@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>Hello,</p>
<p>I want to use PETSc with mfem and I know that mfem people will
figure out a way to do it in few months. But for now as a
temporary solution I just thought of converting hypre PARCSR
matrices (that is what mfem uses as linear solver package) into
PETSc MPIAIJ matrices and I have a semi-working code with some
bugs. Also my code is dauntingly slow and seems like not scaling.
I have used <span class="m_-7064235882861519930st"><em>MatHYPRE_IJMatrixCopy </em>from
myhp.c of PETSc and <i>hypre_ParCSRMatrixPrintIJ</i> from
par_csr_matrix.c of hypre as starting points. Before starting I
checked whether there was anything done similar to this, I could
not find anything.</span></p>
<p><span class="m_-7064235882861519930st">My question is, are you aware of such a
conversion code (i.e. something like <i>hypre_ParCSRtoPETScMPIAIJ(
hypre_ParCSRMatrix *matrix, </i><i>Mat *A</i>)?</span></p></div></blockquote><div>No, but maybe Satish knows. Slow running times most likely come from lack of preallocation for the target matrix.</div><div><br></div><div> Thanks,</div><div><br></div><div> Matt</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000"><p><span class="m_-7064235882861519930st">
Thanks in advance,<br>
Abdullah Ali Sivas<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div>
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