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On Fri, Apr 12, 2024 at 11: 16 AM Pierre Jolivet <pierre@ joliv. et> wrote: On 12 Apr 2024, at 11: 10 AM, Carl-Johan Thore <carljohanthore@ gmail. com> wrote: Pierre, I see that you've already done a merge request for this. Thanks!I
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<div dir="ltr"><div dir="ltr">On Fri, Apr 12, 2024 at 11:16 AM Pierre Jolivet <<a href="mailto:pierre@joliv.et">pierre@joliv.et</a>> wrote:</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"><div><br id="m_-2938080504362937307lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On 12 Apr 2024, at 11:10 AM, Carl-Johan Thore <<a href="mailto:carljohanthore@gmail.com" target="_blank">carljohanthore@gmail.com</a>> wrote:</div><br><div><div dir="ltr"><div>Pierre, I see that you've already done a merge request for this. Thanks!</div><div>I have tested this and it works nicely in my application</div></div></div></blockquote><div><br></div><div>I guess your matrix is symmetric in pattern?</div><div>Because otherwise, I don’t think this should work.</div><div>But if it’s OK for your use case, I could simply add a PetscCheck() that the input Mat is symmetric and then get this integrated (better to have something partially working than nothing at all, I guess).</div><div>Please let me know.</div><div><br></div><div>Thanks,</div><div>Pierre</div></div></div></blockquote><div><br></div><div>Yes, unless I'm mistaken it's structurally symmetric. Would be great to have this integrated.<br></div><div>(I don't now what you have in mind for the check, but MatIsStructurallySymmetric did not work for me)<br></div><div>/Carl-Johan<br></div><div><br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div><blockquote type="cite"><div><div dir="ltr"><div>/Carl-Johan<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Apr 10, 2024 at 8:24 AM Carl-Johan Thore <<a href="mailto:carljohanthore@gmail.com" target="_blank">carljohanthore@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"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 9, 2024 at 5:31 PM Pierre Jolivet <<a href="mailto:pierre@joliv.et" target="_blank">pierre@joliv.et</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><br><div><blockquote type="cite"><div>On 9 Apr 2024, at 4:19 PM, Carl-Johan Thore <<a href="mailto:carljohanthore@gmail.com" target="_blank">carljohanthore@gmail.com</a>> wrote:</div><br><div><div dir="ltr" id="m_-2938080504362937307m_-5050487428091346233m_-1659618119838817774pfptBannerws0ab7o" 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0px;padding:8px 16px;border-radius:4px;min-width:200px;border-top:4px solid rgb(144,164,174)"><div id="m_-2938080504362937307m_-5050487428091346233m_-1659618119838817774pfptBannerws0ab7o" 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0px 1px;max-width:600px"><div id="m_-2938080504362937307m_-5050487428091346233m_-1659618119838817774pfptBannerws0ab7o" 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Message Is From an External Sender</div><div id="m_-2938080504362937307m_-5050487428091346233m_-1659618119838817774pfptBannerws0ab7o" style="writing-mode:unset;font-family:Arial,sans-serif;font-feature-settings:unset;font-kerning:unset;font-size:12px;font-size-adjust:unset;font-stretch:unset;font-variant-alternates:unset;font-variant-caps:unset;font-variant-east-asian:unset;font-variant-ligatures:unset;font-variant-numeric:unset;font-weight:unset;text-orientation:unset;letter-spacing:unset;background-blend-mode:unset;background-image:unset;background-position:unset;background-repeat:unset;background-size:unset;border-collapse:unset;border:unset;box-sizing:unset;break-after:unset;break-before:unset;break-inside:unset;caption-side:unset;clear:unset;columns:unset;column-fill:unset;column-gap:unset;column-rule:unset;column-span:unset;empty-cells:unset;float:unset;image-orientation:unset;isolation:unset;line-break:unset;line-height:18px;list-style:unset;mix-blend-mode:unset;object-fit:unset;object-position:unset;outline:unset;overflow:unset;quotes:unset;table-layout:unset;text-align:unset;text-align-last:unset;text-decoration:unset;text-emphasis:unset;text-indent:unset;text-overflow:unset;text-transform:unset;text-underline-position:unset;vertical-align:unset;white-space:unset;word-break:unset;border-spacing:unset;word-spacing:unset;background-clip:unset;background-origin:unset;text-combine-upright:unset;display:block;opacity:unset;background-color:rgb(208,216,220);border-radius:unset;height:unset;margin-bottom:unset;margin-left:unset;margin-right:unset;max-height:unset;max-width:unset;min-height:unset;min-width:unset;padding:unset;width:unset;margin-top:2px">This message came from outside your organization.</div></div><div style="height:0px;clear:both;display:block;line-height:0;font-size:0.01px"></div></div><div dir="ltr" style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none"><div>Thanks for the suggestion. I don't have a factored matrix (and can't really use direct linear solvers) so<span> </span><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif;font-size:12pt">MatSolveTranspose doesn't seem to be an option. </span></div><div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif;font-size:12pt">I should have mentioned that I've also tried KSPSolveTranspose but that doesn't work with pcredistribute<br></span></div></div></div></blockquote><div><br></div><div>I’m not a frequent PCREDISTRIBUTE user, but it looks like <a href="https://urldefense.us/v3/__https://petsc.org/release/src/ksp/pc/impls/redistribute/redistribute.c.html*line332__;Iw!!G_uCfscf7eWS!eKgr2PYF7SG39RXX3djw6sMcERzrkuIDlriMyaTiUBJLndZZjvPWDIExlBIgGGHuniBRgDKoQ2YiNQFa0Rh356QrCz6dDw$" target="_blank">https://petsc.org/release/src/ksp/pc/impls/redistribute/redistribute.c.html#line332</a> could be copy/paste’d into PCApplyTranspose_Redistribute() by just changing a MatMult() to MatMultTranspose() and KSPSolve() to KSPSolveTranspose().</div><div>Would you be willing to contribute (and test) this?</div><div>Then, KSPSolveTranspose() — which should be the function you call — will work.</div><div><br></div><div>Thanks,</div><div>Pierre</div></div></div></blockquote><div><br></div><div>Thanks, that sounds promising. Yes, I'll try to make a contribution<br></div><div>/Carl-Johan<br></div></div></div>
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