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Subject: Re: [OMPI users] pgi and gcc runtime compatability
From: Terry Frankcombe (terry_at_[hidden])
Date: 2008-12-07 22:24:34


Many of today's compilers for Linux (pgi, intel, etc.) are designed to
be link-compatible with gcc. That must extend to calling conventions
(mangling schemes and argument passing, etc.)

If it's static link-compatible, surely this applies to dynamic (runtime)
linking (right?)

Is there stuff going on internal to OMPI that requires tighter
integration between app and library than standard function calls tying
together? How invasive is the memory management stuff?

On Sun, 2008-12-07 at 22:06 -0500, Brock Palen wrote:
> I did something today that I was happy worked, but I want to know if
> anyone has had problem with it.
>
> At runtime. (not compiling) would a OpenMPI built with pgi work to
> run a code that was compiled with the same version but gcc built
> OpenMPI ? I tested a few apps today after I accidentally did this
> and found it worked. They were all C/C++ apps (namd and gromacs)
> but what about fortran apps? Should we expect problems if someone
> does this?
>
> I am not going to encourage this, but it is more if needed.
>
>
> Brock Palen
> www.umich.edu/~brockp
> Center for Advanced Computing
> brockp_at_[hidden]
> (734)936-1985
>
>
>
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