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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>In other words, does the function <a name=MatGetOrdering><b>MatGetOrdering</b></a> only support symmetric matrix? It can’t work well in other cases?<o:p></o:p></p><p class=MsoNormal><a name="_MailEndCompose"><span style='color:#1F497D'><o:p> </o:p></span></a></p><span style='mso-bookmark:_MailEndCompose'></span><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span lang=ZH-CN style='font-family:DengXian;mso-fareast-language:ZH-CN'>发件人</span></b><b><span style='font-family:DengXian;mso-fareast-language:ZH-CN'>:</span></b><span style='font-family:DengXian;mso-fareast-language:ZH-CN'> Wei Deng [mailto:deng106@purdue.edu] <br><b><span lang=ZH-CN>发送时间</span>:</b> Thursday, April 21, 2016 11:59 PM<br><b><span lang=ZH-CN>收件人</span>:</b> 'petsc-users@mcs.anl.gov' <petsc-users@mcs.anl.gov><br><b><span lang=ZH-CN>主题</span>:</b> About the MatGetOrdering in Petsc<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Dear Sir/Madam,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>When I was trying to change a sparse matrix into a banded one, I can use RCM in matlab to change it perfectly. But this does not work in Petsc, most points were moved to the diagonal position. However, there are still some points left, leading the width unacceptable.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Do you know why?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The attachment is the code with which I have trouble.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks a lot.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Wei Deng<o:p></o:p></p><p class=MsoNormal>Purdue Uni.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>