
<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hello Anthony,<div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 29 Mar 2022, at 8:07 AM, Anthony Paul Haas <<a href="mailto:aph@email.arizona.edu" class="">aph@email.arizona.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Hello,<div class=""><br class=""></div><div class="">Is PTScotch required when using Petsc with Mumps to solve a (complex) linear system of equations (direct solution)?</div></div></div></blockquote><div><br class=""></div><div><div class="">SCOTCH is not required when using MUMPS, it’s an optional dependency (odeps), see <a href="https://gitlab.com/petsc/petsc/-/blob/c9b04d1e75cd0716fe0f943e5da74654588dc53a/config/BuildSystem/config/packages/MUMPS.py#L49" class="">https://gitlab.com/petsc/petsc/-/blob/c9b04d1e75cd0716fe0f943e5da74654588dc53a/config/BuildSystem/config/packages/MUMPS.py#L49</a>.</div></div><br class=""><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div class="">The page <a href="https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html" class="">https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html</a> mentions to use the following options for the configuration (see below) but the option "<span style="font-family: Times; font-size: inherit;" class="">--download-ptscotch</span>" results in the error message "Unable to configure with given options"</div></div></div></blockquote><div><br class=""></div><div>Please send configure.log at <a href="mailto:petsc-maint@mcs.anl.gov" class="">petsc-maint@mcs.anl.gov</a></div><div><br class=""></div><div><div class="">Thanks,</div><div class="">Pierre</div></div><br class=""><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div class=""><b class=""><u class="">From <a href="https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html" class="">https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html</a><span class="gmail-Apple-converted-space"> </span></u></b></div><div class=""><span style="font-family: Times; font-size: inherit; font-variant-ligatures: normal;" class="">./configure --download-mumps --download-scalapack --download-parmetis --download-metis --download-ptscotch</span><br class=""></div><div class=""><span style="font-family: Times; font-size: inherit; font-variant-ligatures: normal;" class=""><br class=""></span></div><div class=""><span style="font-family: Times; font-size: inherit; font-variant-ligatures: normal;" class=""><br class=""></span></div><div class=""><span style="font-family: Times; font-size: inherit; font-variant-ligatures: normal;" class="">Thanks,</span></div><div class=""><span style="font-family: Times; font-size: inherit; font-variant-ligatures: normal;" class=""><br class=""></span></div><div class=""><span style="font-family: Times; font-size: inherit; font-variant-ligatures: normal;" class="">Anthony</span></div><div class=""><span style="font-family: Times; font-size: inherit; font-variant-ligatures: normal;" class=""><br class=""></span></div><div class=""><span style="font-family: Times; font-size: inherit; font-variant-ligatures: normal;" class=""><br class=""></span></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div></div>

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