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[Starpu-devel] Could STARPU_COMMUTE change order with a single worker ?


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  • From: "Jerome Robert" <jeromerobert@gmx.com>
  • To: starpu-devel@lists.gforge.inria.fr
  • Subject: [Starpu-devel] Could STARPU_COMMUTE change order with a single worker ?
  • Date: Thu, 16 Feb 2017 12:04:11 +0100
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Hello,

With multiple worker, inserting T1 then T2, with both allowed to commute
(STARPU_COMMUTE flag), could lead to and execution order of T1-T2 or T2-T1.
But with only one worker (STARPU_NCPU=1), does the current implementation
will always execute T1-T2 (same as insertion order) or could they be
reordered ?

Note that I don't plan to rely on one behavior or an other in the long term
(both behavior would obviously be correct). I need this information just to
help me to debug my program.

I'm using the prio scheduler and the head of the 1.2 branch.

Regards,

Jerome




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