[petsc-users] problem configuring 3.8.3 with intel mpi

[Satish Balay]

Should mention:

one nice thing about --with-mpi-dir option is - it attempts to pick up
related/compatible compilers - i.e MPI_DIR/bin/{mpicc,mpicxx,mpif90}

When one uses --with-cc=mpicc --with-fc=mpif90 --with-cxx=mpicxx - the
burden on providing related/compatible compilers is on the user - i.e
more error cases with configure using unrelated/incompatible mpi
compilers..

Will try to add support for
--with-mpi-dir=/opt/intel/compilers_and_libraries_2017.1.132/linux/mpi
- and then prefer mpiicc over mpicc [in both with-mpi-dir check and
PATH check?]


Satish

On Thu, 22 Mar 2018, Klaij, Christiaan wrote:

> Guess I shouldn't have read the intel manual :-)
> 
> Lesson learned, no more guessing. And I sure appreciate all the
> effort you are putting into this, especially the option to
> configure and build other packages in a consistent way with the
> --download-package option.
> 
> Chris
> 
> 
> dr. ir. Christiaan Klaij  | Senior Researcher | Research & Development
> MARIN | T +31 317 49 33 44 | mailto:C.Klaij at marin.nl | http://www.marin.nl
> 
> MARIN news: http://www.marin.nl/web/News/News-items/SSSRIMARIN-seminar-May-18-2018-Shanghai.htm
> 
> ________________________________________
> From: Satish Balay <balay at mcs.anl.gov>
> Sent: Thursday, March 22, 2018 3:14 PM
> To: Klaij, Christiaan
> Cc: petsc-users
> Subject: Re: [petsc-users] problem configuring 3.8.3 with intel mpi
> 
> Sure - they have so many ways of tweaking things - so one can't things
> will be the same across multiple users.
> 
> Most users dont' set these env variables [thats extra work - and not
> the default behavior anyway] - so they rely on the default behavior -
> i.e use mpicc for gnu and mpiicc for intel compilers.
> 
> [i.e the guesses picked up by configure might not always be what the
> user wants - so its best to tell configure not to guess - and tell it
> exactly what one wants it to use. And there might be scope to improve
> guessing in favor of most common use cases.]
> 
> Satish
> 
> On Thu, 22 Mar 2018, Klaij, Christiaan wrote:
> 
> > Fair enough.
> >
> > As a side note: if you want intel compilers, there's no need to
> > specify mpiicc, intel says to export I_MPI_CC=icc, which gives
> >
> > $ which mpicc
> > /opt/intel/compilers_and_libraries_2017.1.132/linux/mpi/intel64/bin/mpicc
> > $ mpicc -v
> > mpiicc for the Intel(R) MPI Library 2017 Update 1 for Linux*
> > Copyright(C) 2003-2016, Intel Corporation.  All rights reserved.
> > icc version 17.0.1 (gcc version 4.8.5 compatibility)
> >
> > (otherwise they wrap the gnu compilers by default, baffling)
> >
> > Chris
> >
> >
> > dr. ir. Christiaan Klaij  | Senior Researcher | Research & Development
> > MARIN | T +31 317 49 33 44 | mailto:C.Klaij at marin.nl | http://www.marin.nl
> >
> > MARIN news: http://www.marin.nl/web/News/News-items/Frequency-of-spill-model-for-area-risk-assessment-of-shipsource-oil-spills-in-Canadian-waters-1.htm
> >
> > ________________________________________
> > From: Satish Balay <balay at mcs.anl.gov>
> > Sent: Thursday, March 22, 2018 2:54 PM
> > To: Klaij, Christiaan
> > Cc: petsc-users
> > Subject: Re: [petsc-users] problem configuring 3.8.3 with intel mpi
> >
> > On Thu, 22 Mar 2018, Klaij, Christiaan wrote:
> >
> > > OK, configure works with the option --with-cc=/path/to/mpicc,
> > > thanks!
> > >
> > > I'm not sure you are right about checking --with-mpi-dir/bin,
> >
> > There are 2 types of options to configure:
> >  - tell configure what to use - i.e do not guess [like --with-cc=mpicc']
> >  - tell configure to *guess* with partial info [like --with-package-dir=/path/to/foo/bar]
> >
> > When configure has to guess - it will never be perfect.
> >
> > Sure - perhaps the guessing of --with-mpi-dir can be improved - but it will never be perfect.
> >
> > > because, at least with this install, the binaries are located in
> > > --with-mpi-dir/intel64/bin:
> > >
> > > $ which mpicc
> > > /opt/intel/compilers_and_libraries_2017.1.132/linux/mpi/intel64/bin/mpicc
> >
> > So the more appropriate thing here [wrt petsc configure] is
> > --with-mpi-dir=/opt/intel/compilers_and_libraries_2017.1.132/linux/mpi/intel64
> >
> > And then - what if you want to use intel compilers and not gnu
> > compilers [with intel mpi]? - you have to specify mpiicc - and not
> > mpicc - so its best to prefer 'no-guess' options like --with-cc.
> > [with-mpi-dir is usually convinent - but not always suitable]
> >
> > Satish
> >
> > >
> > > Perhaps something to do with intel supporting both 32 and
> > > 64bit. Anyway, our sysadmin didn't change any of these locations,
> > > they just run the intel installer and this is what we got.
> >
> 
>