yade-dev team mailing list archive

[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxxxxxx>]

Hi there,
FYI  [1] is showing a concrete MPI execution (with just two threads...).
The MPI run is approximately 10x slower than the reference non-MPI run on
my laptop, which is encouraging given the lazy implementation (e.g.  large
excess of useless data going through messages with
serialization/deserialization on both sides).
I'm currently extending to N threads, which should only need little changes.

This is you last chance to join yade-mpi team since next messages will go
there directly. :)

Cheers
Bruno


 [1]
https://github.com/bchareyre/yade-mpi/blob/master/examples/mpi/testMPI.py

On 8 August 2018 at 09:25, Eulitz, Alexander <
Alexander.Eulitz@xxxxxxxxxxxxxxxx> wrote:

> Hi,
> I am really looking forward to such feature of Yade. This is an important
> step for broadening the field of possible applications of the software. For
> us in Berlin it would be a great thing if it enables us so simulate some
> hundred tousands of particles in our manufacturing processes.
> If you need some assistance besides programming let me know. I hope, I can
> contribute somehow. At the moment we applied for some funding in that
> direction, hopefully we will be successfull and can support the project a
> bit.
> Best regards
> Alex
>
> -----Ursprüngliche Nachricht-----
> Von: Yade-dev [mailto:yade-dev-bounces+alexander.eulitz=iwf.tu-
> berlin.de@xxxxxxxxxxxxxxxxxxx] Im Auftrag von Bruno Chareyre
> Gesendet: Donnerstag, 19. Juli 2018 18:50
> An: yade-dev; Kneib François; Václav Šmilauer; Pierre-Antoine Bouttier
> Betreff: [Yade-dev] yade-MPI
>
> Hi all,
> Hopefully there will be some progress in the near future regarding a
> distributed  memory parallelization of Yade.
> For the moment the preferred approach is to handle this all at the
> python level using mpi4py (porting some critical functions to c++ might
> be considered later).
> Some changes (hopefully limited) are necessary on the c++ side
> nevertheless, and I just forked a branch to this purpose [1].
> You can find main ideas in the wiki of this branch [2].
>
> This project is still very much in a brainstorming stage, every comment
> or question are welcome (especially if it helps anticipating
> shortcomings of some decisions!).
> You can subscribe to the yade-mpi mailing list if you'd like to discuss
> it or just keep track of the progress.
>
> Cheers
>
> Bruno
>
> https://github.com/bchareyre/yade-mpi/
> https://github.com/bchareyre/yade-mpi/wiki
> https://launchpad.net/~yade-mpi
>
> --
> _______________
> Bruno Chareyre
> Associate Professor
> ENSE³ - Grenoble INP
> Lab. 3SR
> BP 53
> 38041 Grenoble cedex 9
> Tél : +33 4 56 52 86 21
> Fax : +33 4 76 82 70 43
> ________________
>
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>
>
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