<div dir="ltr">Hello,<div><br></div><div>Is PTScotch required when using Petsc with Mumps to solve a (complex) linear system of equations (direct solution)?</div><div><br></div><div>The page <a href="https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html">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="color:rgb(0,0,0);font-family:Times;font-size:medium">--download-ptscotch</span>" results in the error message "Unable to configure with given options"</div><div><br></div><div><b><u>From <a href="https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html">https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html</a><span class="gmail-Apple-converted-space"> </span></u></b></div><div><span style="color:rgb(0,0,0);font-family:Times;font-size:medium;font-variant-ligatures:normal">./configure --download-mumps --download-scalapack --download-parmetis --download-metis --download-ptscotch</span><br></div><div><span style="color:rgb(0,0,0);font-family:Times;font-size:medium;font-variant-ligatures:normal"><br></span></div><div><span style="color:rgb(0,0,0);font-family:Times;font-size:medium;font-variant-ligatures:normal"><br></span></div><div><span style="color:rgb(0,0,0);font-family:Times;font-size:medium;font-variant-ligatures:normal">Thanks,</span></div><div><span style="color:rgb(0,0,0);font-family:Times;font-size:medium;font-variant-ligatures:normal"><br></span></div><div><span style="color:rgb(0,0,0);font-family:Times;font-size:medium;font-variant-ligatures:normal">Anthony</span></div><div><span style="color:rgb(0,0,0);font-family:Times;font-size:medium;font-variant-ligatures:normal"><br></span></div><div><span style="color:rgb(0,0,0);font-family:Times;font-size:medium;font-variant-ligatures:normal"><br></span></div><div><br></div><div><br></div><div><br></div></div>