Objet : Developers list for StarPU
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- From: Samuel Thibault <samuel.thibault@inria.fr>
- To: Philippe SWARTVAGHER <philippe.swartvagher@inria.fr>
- Cc: starpu-devel@lists.gforge.inria.fr, Alexandre Denis <alexandre.denis@inria.fr>
- Subject: Re: [Starpu-devel] StarPU overhead for MPI
- Date: Fri, 7 Feb 2020 13:52:39 +0100
- List-archive: <http://lists.gforge.inria.fr/pipermail/starpu-devel/>
- List-id: "Developers list. For discussion of new features, code changes, etc." <starpu-devel.lists.gforge.inria.fr>
- Organization: I am not organized
Hello,
Philippe SWARTVAGHER, le mer. 05 févr. 2020 19:08:41 +0100, a ecrit:
> The gprof output is attached.
>
[...]
> 56.99 10.39 10.39 2930873 0.00 0.01
> _starpu_get_worker_task
> 14.10 12.96 2.57 2165605 0.00 0.00 lws_select_victim
[...]
Mmm, could you run it with STARPU_NCPU=1 to avoid spam from the
idle workers? Probably you can even just disable them by calling
starpu_pause(); before your pingpong.
You may also need to make the test longer for the timing statistics to
get significant.
Samuel
- Re: [Starpu-devel] StarPU overhead for MPI, Philippe SWARTVAGHER, 05/02/2020
- Re: [Starpu-devel] StarPU overhead for MPI, Samuel Thibault, 07/02/2020
- Re: [Starpu-devel] StarPU overhead for MPI, Philippe SWARTVAGHER, 12/02/2020
- Re: [Starpu-devel] StarPU overhead for MPI, Samuel Thibault, 12/02/2020
- Re: [Starpu-devel] StarPU overhead for MPI, Philippe SWARTVAGHER, 13/02/2020
- Re: [Starpu-devel] StarPU overhead for MPI, Samuel Thibault, 12/02/2020
- Re: [Starpu-devel] StarPU overhead for MPI, Philippe SWARTVAGHER, 12/02/2020
- <Suite(s) possible(s)>
- Re: [Starpu-devel] StarPU overhead for MPI, Samuel Thibault, 05/02/2020
- Re: [Starpu-devel] StarPU overhead for MPI, Philippe SWARTVAGHER, 05/02/2020
- Re: [Starpu-devel] StarPU overhead for MPI, Samuel Thibault, 07/02/2020
- Re: [Starpu-devel] StarPU overhead for MPI, Philippe SWARTVAGHER, 05/02/2020
- Re: [Starpu-devel] StarPU overhead for MPI, Samuel Thibault, 07/02/2020
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