[mpich-discuss] Segmentation fault when MPICH is compiled with Portland compiler 17.5

[Jeff Hammond]

By the way, because this isn't Fortran specific, you should be able to
build MPICH with PGI Fortran and GCC or Clang to avoid the bug.

~5 years ago there was come issue with building MPICH with CC=gcc and
FC=pgifortran related to replacing bcopy/bzero with the equivalent
memcpy/memset, but I'm optimistic that problem has disappeared.

Jeff

On Tue, Jul 11, 2017 at 9:42 AM, Jeff Hammond <jeff.science at gmail.com>
wrote:

> I reproduced this with PGI 17.4 community edition on Linux with your
> Fortran test and an equivalent C one.
>
> GDB indicates the SEGV happens here:
>
> Program received signal SIGSEGV, Segmentation fault.
> MPID_nem_init (pg_rank=0, pg_p=0x60fce0, has_parent=8388607) at
> ../src/mpid/ch3/channels/nemesis/src/mpid_nem_init.c:305
> 305 MPID_nem_queue_enqueue(MPID_nem_mem_region.FreeQ[pg_rank],
> &(MPID_nem_mem_region.Elements[idx]));
>
> Jeff
>
>
> On Tue, Jul 11, 2017 at 1:19 AM, Andrew Wood <andrew at fluidgravity.co.uk>
> wrote:
> >
> > > It's hard not to conclude this is a PGI 17 bug from your description.
> Have you
> > > reported this to PGI? I would hate for the MPICH team to take support
> work away
> > > from the people PGI pays to do this.
> >
> > Indeed, and I have done so.
> >
> > However, in my experience, it tends to be somewhat unpredictable whether
> > incorrect code causes a segmentation fault or not. So I thought it worth
> > checking here too.
> >
> > Regards,
> > Andy.
> >
> > On 10/07/17 21:17, Jeff Hammond wrote:
> > > "This occurs with PGI versions 17.1 and 17.5, but not with versions
> 16.1, 16.5 or
> > > 16.7, nor with the current Intel or gcc compilers."
> > >
> > > It's hard not to conclude this is a PGI 17 bug from your description.
> Have you
> > > reported this to PGI? I would hate for the MPICH team to take support
> work away
> > > from the people PGI pays to do this.
> > >
> > > Jeff
> > >
> > >
> > > On Mon, Jul 10, 2017 at 6:48 AM Andrew Wood <andrew at fluidgravity.co.uk
> > > <mailto:andrew at fluidgravity.co.uk>> wrote:
> > >
> > >     Hi,
> > >
> > >     I'm getting a segmentation fault in MPI_INIT, when MPICH is
> compiled with the
> > >     current version of the Portland compilers:
> > >
> > >     > mpif90 code.f90 && ./a.out
> > >     Segmentation fault
> > >
> > >     code.f90 is in the attached .tar.gz file, along with the .log
> files generated by
> > >     configuring and building MPICH.
> > >
> > >     This occurs with PGI versions 17.1 and 17.5, but not with versions
> 16.1, 16.5 or
> > >     16.7, nor with the current Intel or gcc compilers. It occurs with
> MPICH versions
> > >     3.1.4, 3.2 and the current master branch in the github repository.
> > >
> > >     The problem does not occur if MPICH is configured with the option
> > >     '--disable-fast'.
> > >
> > >     Is this a bug in MPICH or PGI, or have I done something else wrong?
> > >
> > >     Thanks,
> > >     Andy.
> > >
> > >     --
> > >     Dr Andrew Wood
> > >     Fluid Gravity Engineering Ltd.
> > >     83 Market Street
> > >     St Andrews
> > >     Fife KY16 9NX
> > >     Tel: +44 (0)1334 460805
> > >     Fax: +44 (0)1334 460813
> > >
> > >     Fluid Gravity Engineering Ltd is registered in the UK with
> registration number
> > >     1674369. The registered address is Fluid Gravity Engineering Ltd,
> Unit 1, The
> > >     Old Coach House, 1 West Street, Emsworth, Hampshire, PO10 7DX.
> > >     _______________________________________________
> > >     discuss mailing list     discuss at mpich.org <mailto:
> discuss at mpich.org>
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> > >
> > > --
> > > Jeff Hammond
> > > jeff.science at gmail.com <mailto:jeff.science at gmail.com>
> > > http://jeffhammond.github.io/
> >
> >
> > --
> > Dr Andrew Wood
> > Fluid Gravity Engineering Ltd.
> > 83 Market Street
> > St Andrews
> > Fife KY16 9NX
> > Tel: +44 (0)1334 460805
> > Fax: +44 (0)1334 460813
> >
> > Fluid Gravity Engineering Ltd is registered in the UK with registration
> number
> > 1674369. The registered address is Fluid Gravity Engineering Ltd, Unit
> 1, The
> > Old Coach House, 1 West Street, Emsworth, Hampshire, PO10 7DX.
> > _______________________________________________
> > discuss mailing list     discuss at mpich.org
> > To manage subscription options or unsubscribe:
> > https://lists.mpich.org/mailman/listinfo/discuss
>
>
>
>
> --
> Jeff Hammond
> jeff.science at gmail.com
> http://jeffhammond.github.io/
>



-- 
Jeff Hammond
jeff.science at gmail.com
http://jeffhammond.github.io/
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