Charm++ parallel programming system

[Maksym Planeta <mplaneta AT os.inf.tu-dresden.de>]

Dear Jeff,

do I understand correctly that it is fair to compare MPI1 
implementations with AMPI implementations (the code looks to be the same)?

Are these applications too small to benefit from AMPI load balancing?

Can AMPI automatically serialize individual ranks of PRK to employ 
transparent load balancing, using isomalloc?

On 10/22/2016 12:55 AM, Jeff Hammond wrote:
>         Currently, I just wanted to compare AMPI vs MPI and for that I
>         planned to port several benchmarks (NPB or miniapps). I will be
>         happy to have any tool which makes porting smoother.
>
>
>     I believe we actually have ported versions of the NPB that we could
>     readily share with you. We've also already ported and tested parts
>     of the Mantevo suite and most of the Lawrence Livermore ASC proxy
>     applications.
>
>
> The Parallel Research Kernel (PRK) project already supports AMPI, in
> addition to Charm++ and approximately a dozen other programming models.
> See https://github.com/ParRes/Kernels/ for details.  The AMPI builds are
> part of our CI system (https://travis-ci.org/ParRes/Kernels) so I know
> they are working.
>
> We didn't publish AMPI results
> in http://dx.doi.org/10.1007/978-3-319-41321-1_17 but it is a good
> overview of the PRK project in general.  I can provide more details
> offline if you want.
>
>
>
>     Mostly, I wanted to distinguish between commodity clusters and more
>     proprietary supercomputers, like IBM Blue Gene and Cray. The
>     specialized systems have more quirks that make AMPI a bit harder to
>     use. SLURM on a common Linux cluster is perfectly straightforward.
>
>
> Charm++ runs wonderfully on both Blue Gene and Cray machines.  I thought
> we tested AMPI on Cray as part of our study, but perhaps my memory is
> suffering from bitflips.  I guess Blue Gene may have issues related to
> virtual memory and compiler support.
>
> Best,
>
> Jeff
>
> --
> Jeff Hammond
> jeff.science AT gmail.com
>  
> <mailto:jeff.science AT gmail.com>
> http://jeffhammond.github.io/

--
Regards,
Maksym Planeta

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