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

[Andrew Wood]

> 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.
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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.
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