<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><br class=""></div> That is an extremely old PETSc version. Unless you are using a package that only works with that version (and talk to the package's authors about upgrading) we recommend upgrading to the latest PETSc version.<div class=""><br class=""></div><div class=""> Usually, there is more information in the error message, is there more in the message you can send?</div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jun 7, 2022, at 10:00 AM, Matthew Knepley <<a href="mailto:knepley@gmail.com" class="">knepley@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div dir="ltr" class="">On Tue, Jun 7, 2022 at 9:51 AM wang yuqi <<a href="mailto:yu1299885905@outlook.com" class="">yu1299885905@outlook.com</a>> wrote:<br class=""></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div class="gmail-m_1004456121393181582WordSection1"><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif" class="">Hi, Dear developer:</span><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif" class=""><u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif" class="">I encountered the following problems when I run my code with PETSC-3.5.2:<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:red" class="">[46]PETSC ERROR: ------------------------------------------------------------------------<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:red" class="">[46]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, probably memory access out of range<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:red" class="">[46]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:red" class="">[46]PETSC ERROR: or see
<a href="http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind" target="_blank" class="">http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind</a><u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:red" class="">[46]PETSC ERROR: or try <a href="http://valgrind.org/" target="_blank" class="">http://valgrind.org</a> on GNU/linux and Apple Mac OS X to find memory corruption errors<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:rgb(36,41,47);background:white" class="">Could you please help me to fix this problem?<u class=""></u><u class=""></u></span></p><div class=""><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:rgb(36,41,47);background:white" class=""></span><br class="webkit-block-placeholder"></div></div></div></blockquote><div class=""><br class=""></div><div class="">It may not be a PETSc problem. Could you run in the debugger and get a stack trace?</div><div class=""><br class=""></div><div class=""> Thanks,</div><div class=""><br class=""></div><div class=""> Matt</div><div class=""> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="ZH-CN" style="overflow-wrap: break-word;" class=""><div class="gmail-m_1004456121393181582WordSection1"><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:rgb(36,41,47);background:white" class="">Thank you very much!<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:rgb(36,41,47);background:white" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:rgb(36,41,47);background:white" class="">Best Regards.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:"Times New Roman",serif;color:rgb(36,41,47);background:white" class="">Yuqi Wang<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:14pt;font-family:SimSun" class=""><u class=""></u> <u class=""></u></span></p>
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</blockquote></div><br clear="all" class=""><div class=""><br class=""></div>-- <br class=""><div dir="ltr" class="gmail_signature"><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class="">What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br class="">-- Norbert Wiener</div><div class=""><br class=""></div><div class=""><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank" class="">https://www.cse.buffalo.edu/~knepley/</a><br class=""></div></div></div></div></div></div></div></div>
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