[petsc-dev] Multiple MPICH/fblaslapack Installs For Multiple Arches

[Jacob Faibussowitsch]

> Do you mean 32-bit/64-bit (pointers) or --with-64-bit-indices=0/1 ? [or do you have --known-64-bit-blas-indices in the mix?]
Sorry, I mean configuring petsc with —with-64-bit-indices=1 here.

Best regards,

Jacob Faibussowitsch
(Jacob Fai - booss - oh - vitch)
Cell: (312) 694-3391

> On Mar 22, 2020, at 4:24 PM, Satish Balay <balay at mcs.anl.gov> wrote:
> 
> Do you mean 32-bit/64-bit (pointers) or --with-64-bit-indices=0/1 ? [or do you have --known-64-bit-blas-indices in the mix?]
> 
> Satish
> 
> On Sun, 22 Mar 2020, Jacob Faibussowitsch wrote:
> 
>> Hello all,
>> 
>> As part of development, I have several arch folders lying around in my PETSC_DIR namely a 32-bit OSX, 64-bit OSX, 32-bit linux with valgrind, 64-bit linux with valgrind, and a 32-bit up to date with current master. All of these have a —download-mpich —download-fblaslapack and hence their own copy of each (so that’s 5 copies of each, plus other duplicated packages im sure). At this stage, even getting the bare minimum of these arches ready for dev work after a rebase/git pull takes decades as package versions, or conf settings change, forcing a rebuild of the same packages multiple times.
>> 
>> My question(s):
>> What petsc ./configure options are necessary to change the configuration of each library w.r.t. petsc? i.e. can my 64-bit arches use my 32-bit MPICH/fblaslapack and vice-versa? Does this change when I have —with-debug on or off? If so, what other packages have a similar ability? Is there anywhere in ./configure —help where this kind of information would be documented? 
>> 
>> I suspect that this hasn’t been fully explored since its primarily a developer “problem” and not one the average user will run into/care about (since they usually aren’t building petsc multiple times). I’m sure everyone has their own ways of tackling this problem, I’d love to hear them.
>> 
>> Best regards,
>> 
>> Jacob Faibussowitsch
>> (Jacob Fai - booss - oh - vitch)
>> Cell: (312) 694-3391
>> 
>> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20200322/5578645c/attachment.html>