Re: [gentoo-science] MPI and multicore + lib question

[Markus Dittrich <markusle@gentoo.org>]

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On Thu, 11 Jan 2007, Alessandro Yoshi Polliotti wrote:
> I hope I'm not asking anything too obvious but I wasn't able to find relevant
> information online.
>
> I have installed apbs enabling mpi, it works but it detects only one cpu in my
> core duo system. Strictly speaking it's correct, but not quite what I
> expected. I would like to know more about this behaviour, is it due to my
> misconfiguration of apbs, mpi, kernel or other factors?
>
> Besides this, trying to make apbs detect my two cores I tried also mpich2 and
> lam-mpi as mpi implementations. Using both of them and recompiling maloc apbs
> will complain that maloc has not been compiled with mpi support, and will
> keep mpi out of the build process. maloc however doesn't print any warning.
>

Hi Alessandro,

If I interpret your question correctly it looks
like you did not use mpirun to start your parallel
apbs job, which is what you need to do. 
Have a look at mpirun's man page which should
get you started.

Best,
Markus


- -- 
Markus Dittrich (markusle)
Gentoo Linux Developer
Scientific applications
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