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<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial">Dear Petsc:
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial">I’m trying on Petsc iterative solver(KSPCG & PCJACOBI), but it’s strange that the two functions “MatCopy” and “MatSetValue” consume most of runtime,
and the functions were not called frequently, just several times. <o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial">My libpetsc.a is built as follows:
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial">1, /config/configure.py --with-mpi=0 --with-debugging=0 -with-log=0 -with-info=0<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial">2, make all;<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial">It’s very appreciated to get your reply.
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial">Thanks a lot,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" face="Arial"><span lang="EN-US" style="font-size:
9.0pt;font-family:Arial">Debao<o:p></o:p></span></font></p>
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