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<div>Hi Giacomo,</div>
<div>can you copy the part that starts with "any idea to create a version of petsc" into a new bug report for src:petsc?</div>
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<div>I think what you are saying totally makes sense, but it would be good to properly keep track of it as a reminder for the TODO list.</div>
<div>We will be starting with petsc 3.22 in a few weeks, so that may be a good time to have a try in adding --with-64-bit-blas-indices.</div>
<div>We would have to double check if that requires us to change something in the blas-related package as well, or if the change is limited to petsc only.</div>
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<div>Cheers,<br>
Francesco</div>
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<div dir="ltr" class="gmail_attr">On Sun, Oct 20, 2024 at 9:28 PM Giacomo Mulas <<a href="mailto:giacomo.mulas@inaf.it">giacomo.mulas@inaf.it</a>> wrote:<br>
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On Sun, 20 Oct 2024, Francesco Ballarin wrote:<br>
<br>
> Source: petsc<br>
> Followup-For: Bug #1085505<br>
> X-Debbugs-Cc: <a href="mailto:giacomo.mulas@inaf.it" target="_blank">giacomo.mulas@inaf.it</a>,
<a href="mailto:francesco.ballarin@unicatt.it" target="_blank">francesco.ballarin@unicatt.it</a>,
<a href="mailto:dparsons@debian.org" target="_blank">dparsons@debian.org</a><br>
><br>
> Hi Giacomo,<br>
> we already encountered this in Bug #1085405, and released this morning a fix<br>
> PETSc 3.21.6+dfsg1-2.<br>
><br>
> buildd hasn't built the package yet on all arches, because some of them still<br>
> need to wait for a fix on openmpi 5.x itself.<br>
> amd64 (which is your arch in the report) built successfully however, so you<br>
> should get a working PETSc soon-ish.<br>
<br>
Thanks a lot Francesco! I had indeed looked into debian incoming, before<br>
filing the bug report, but there was nothing yet either there or in<br>
experimental.<br>
<br>
I take the chance to ask: any idea to create a version of petsc (and in case<br>
slepc) libraries compiled with the --with-64-bit-blas-indices option? I have<br>
codes that use simultaneously slepc/petsc _and_ lapack/blas, the latter<br>
being the version with 64-bit integer indices. To link them simultaneously<br>
in the same code, petsc and slepc also need to use the same lapack/blas<br>
libraries, i.e. with 64-bit integer indices. I have been compiling my<br>
private versions of slepc and petsc for these uses, but it would be indeed<br>
nice to be able to have them available as debian packages. The "64" versions<br>
of petsc and slepc, as far as I know, are compiled with the --with-64-bit-indices<br>
option set, not --with-64-bit-blas-indices (which is not the same thing).<br>
<br>
Thanks for all the great work, best regards<br>
Giacomo<br>
<br>
P.S. in the meanwhile the fixed petsc libs made it to the archive and I<br>
successfully upgraded all the packages I had to hold back. Thanks!<br>
<br>
-- <br>
_________________________________________________________________<br>
<br>
Giacomo Mulas <<a href="mailto:giacomo.mulas@inaf.it" target="_blank">giacomo.mulas@inaf.it</a>><br>
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