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Re: [Starpu-devel] [selective access mode setting]


Chronologique Discussions 
  • From: Maxim Abalenkov <maxim.abalenkov@gmail.com>
  • To: Samuel Thibault <samuel.thibault@inria.fr>
  • Cc: starpu-devel@lists.gforge.inria.fr
  • Subject: Re: [Starpu-devel] [selective access mode setting]
  • Date: Thu, 6 Sep 2018 17:06:31 +0100
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Hello Samuel,

I see. What about the following alternative solution:

Pass the first and the last data handles with STARPU_RW access modes and all the intermediate handles as the normal STARPU_VALUE without any dependence tracking. Would that work?

My mission is to simplify the DAG. I feel/believe too many (unnecessary) dependencies slow down my code.

Best wishes,
Maxim

Maxim Abalenkov \\ maxim.abalenkov@gmail.com
+44 7 486 486 505 \\ http://mabalenk.gitlab.io

On 6 Sep 2018, at 16:59, Samuel Thibault <samuel.thibault@inria.fr> wrote:

Hello,

Maxim Abalenkov, le jeu. 06 sept. 2018 16:57:49 +0100, a ecrit:
Would it be possible to set the access modes
to the __first__ and the __last__ elements of the array __only__, i.e.

 arr[0].mode = STARPU_RW;
 arr[9].mode = STARPU_RW;

No, the interface requires to fill them all.

Samuel




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