<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div><br></div> You might be looking for <a href="https://petsc.org/release/manualpages/AO/AO/#ao">https://petsc.org/release/manualpages/AO/AO/#ao</a><div><br><div><br><blockquote type="cite"><div>On Jun 9, 2023, at 11:02 AM, Mark Adams <mfadams@lbl.gov> wrote:</div><br class="Apple-interchange-newline"><div><div dir="ltr">An IS is just an array of integers. We need your context.<div>Is this question for sparse matrices? If so look at the documentation on the AIJ matrix construction and the global vertex numbering system.</div><div><br></div><div>Mark</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 8, 2023 at 1:15 PM YuSh Lo <<a href="mailto:ysjosh.lo@gmail.com" target="_blank">ysjosh.lo@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi,<div><br></div><div>I have an IS that contains some vertex that is in natural numbering. How do I map them to global numbering without being distributed?</div><div><br></div><div>Thanks,</div><div>Josh</div></div>
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