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On Tue, Jun 25, 2024 at 12: 05 PM Julien BRUCHON via petsc-users <petsc-users@ mcs. anl. gov> wrote: Hi, Based on 'cg. c', I'm trying to develop my own Krylov solver (a projected conjugate gradient). I want to integrate this into
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<div dir="ltr"><div dir="ltr">On Tue, Jun 25, 2024 at 12:05 PM Julien BRUCHON via petsc-users <<a href="mailto:petsc-users@mcs.anl.gov">petsc-users@mcs.anl.gov</a>> wrote:<br></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 class="msg4560382489244524366">
<div style="font-size:1px;color:rgb(255,255,255);line-height:1px;height:0px;max-height:0px;opacity:0;overflow:hidden;display:none">
Hi, Based on 'cg. c', I'm trying to develop my own Krylov solver (a projected conjugate gradient). I want to integrate this into my C++ code, where I already have an interface for PETSC which works well. However, I have the following questions
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<div><div id="m_4560382489244524366zimbraEditorContainer" style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)"><div>Hi,<br></div><div><br></div><div>Based on 'cg.c', I'm trying to develop my own Krylov solver (a projected conjugate gradient). I want to integrate this into my C++ code, where I already have an interface for PETSC which works well. However, I have the following questions :<br></div><div><br></div><div>- Where am I sensed to put my 'cg_projected.c' and 'pcgimpl.h' files? Should they go in a directory petsc/src/ksp/ksp/impls/pcg/? If so, how do I compile that? Is it simply by adding this directory to the Makefile in petsc/src/ksp/ksp/impls/?</div></div></div></div></blockquote><div><br></div><div>Yes.</div><div><br></div><div> Thanks,</div><div><br></div><div> Matt</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 class="msg4560382489244524366"><div><div id="m_4560382489244524366zimbraEditorContainer" style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)"><div>- I have also tried the basic approach of putting these two files in directories of my own C++ code and compiling. However, I have this error at the link edition:<br></div><div>[100%] Linking CXX shared library libcoeur.so<br>/usr/bin/ld: src/solvers/libsolvers.a(cg_projected.c.o): warning: relocation against `petscstack' in read-only section `.text'<br>/usr/bin/ld: src/solvers/libsolvers.a(cg_projected.c.o): relocation R_X86_64_PC32 against symbol `petscstack' can not be used when making a shared object; recompilé avec -fPIC<br>/usr/bin/ld : échec de l'édition de liens finale : bad value<br>collect2: error: ld returned 1 exit status<br>make[2]: *** [CMakeFiles/coeur.dir/build.make:121 : libcoeur.so] Erreur 1<br>make[1]: *** [CMakeFiles/Makefile2:286 : CMakeFiles/coeur.dir/all] Erreur 2<br>make: *** [Makefile:91 : all] Erreur 2<br></div><div><br></div><div>Could you please tell me what is the right way to proceed?<br></div><div><br></div><div>Thank you,<br></div><div><br></div><div>Julien</div><div>-- <br></div><div><div id="m_4560382489244524366n" style="font-size:larger;line-height:1.4;font-weight:bolder;color:rgb(95,37,159)">Julien Bruchon </div><div id="m_4560382489244524366f">Professeur IMT - Responsable du département MPE</div><div>LGF - UMR CNRS 5307 - <a href="https://urldefense.us/v3/__https://www.mines-stetienne.fr/lgf/__;!!G_uCfscf7eWS!dQgv-IRWC7OgdDf1X9Oew4nHSgleq2ty0AszuRPj70bBiFeCcT4RibQVAvv6FFeD081W1yY8IczRHAHopA0crg$" target="_blank">https://www.mines-stetienne.fr/lgf/</a><br></div><div>
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