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Re: [Starpu-devel] Starpu stats about disk, OOC, and swapping


Chronologique Discussions 
    < Chronologique >      < Discussions >
  • From: Samuel Thibault <samuel.thibault@inria.fr>
  • To: Hatem Ltaief <hatem.ltaief@kaust.edu.sa>, Amani Alonazi <amani.alonazi@kaust.edu.sa>, "starpu-devel@lists.gforge.inria.fr" <starpu-devel@lists.gforge.inria.fr>
  • Subject: Re: [Starpu-devel] Starpu stats about disk, OOC, and swapping
  • Date: Wed, 16 Jan 2019 09:59:10 +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
Samuel Thibault, le mer. 16 janv. 2019 09:23:19 +0100, a ecrit:
> Hatem Ltaief, le mer. 16 janv. 2019 04:53:18 +0000, a ecrit:
> > Does starpu allocate separate threads to perform the OOC data movement?
> > Does the IO operation turn out to be done in parallel? How does it differ
> > from standard fwrite and fread system calls?
>
> Yes, it always uses asynchronous data transfers, which allows to overlap
> everything.

(and it pushes data to disk ahead of missing out memory, and prefetches
it from the disk ahead of needing it for tasks).

Samuel


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