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<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">DA:
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">Sometimes I may encounter crashing when using PETSc, it doesn’t happen always.
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: ------------------------------------------------------------------------<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: Caught
</span></font><font size="1" color="red" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:
Arial;color:red">signal number 15</span></font><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;
color:navy">
Terminate: Somet process (or the batch system) has told this process to end<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: or see http://www.mcs.anl.gov/petsc/petsc-as/documentation/troubleshooting.html#Signal[0]PETSC ERROR: or try
http://valgrind.org on GNU/linux<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">and Apple Mac OS X to find memory corruption errors<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: configure using --with-debugging=yes, recompile, link, and run<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: to get more information on the crash.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: --------------------- Error Message ------------------------------------<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: Signal received!<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: ------------------------------------------------------------------------<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: Petsc Release Version 3.1.0, Patch 8, Thu Mar 17 13:37:48 CDT 2011<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: See docs/changes/index.html for recent updates.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: See docs/index.html for manual pages.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: ------------------------------------------------------------------------<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: Unknown Name on a linux-gnu named r0leaf17 by tachyon Thu Aug 4 04:04:19 2011<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: Libraries linked from /home/dshao/dev_t2k/third_party/OOQP/OOQP-0.99.19/extras/petsc-3.1-p8/linux-gnu-c-debug/lib<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: Configure run at Thu Apr 21 18:09:19 2011<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: Configure options --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" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: ------------------------------------------------------------------------<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">[0]PETSC ERROR: User provided function() line 0 in unknown directory unknown file<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">Do you happen to know the possible cause?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">I also have a question about the usage of “PetscInitialize” & “PetscFinalize”. I can’t totally understand them from the manual.
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">Now, I wrote it as:
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">Int main(int argc, char **argv)<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">{<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"> PetscInitialize(0, 0, 0, 0 );<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"> VerifyApp app(argc, argv);<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"> app.Initialize();<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"> app.Run();<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"> PetscFinalize();<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"> return 0;<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">}<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">Then, built a binary, say “verify”, and executed “verify” on a server first, then, started another “verify” on client by server.
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">The program ran at client side can be multiple processes and multiple threads.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">Is my usage correct?
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">Your answer is appreciated.
<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;color:navy">Thanks,<o:p></o:p></span></font></p>
<p class="MsoNormal"><st1:PersonName w:st="on"><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;
color:navy">De</span></font></st1:PersonName><font size="1" color="navy" face="Arial"><span lang="EN-US" style="font-size:9.0pt;font-family:Arial;
color:navy">bao<o:p></o:p></span></font></p>
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