Re: [starpu-devel] Creating thread partitions

[Samuel Thibault <samuel.thibault@inria.fr>]

Hello,

Doru Adrian Thom Popovici, le mar. 28 nov. 2023 23:52:59 -0800, a ecrit:
> I was reading the documentation, and in there it was said that if a context 
> is
> created without a scheduling policy, then that context basically is a 
> parallel
> worker.
> 
> Based on my understanding, I got all the cpus on the system. From there I
> create some sub-contexts that do not have any scheduling policy. Basically I
> partition the CPUs in p groups. Each group having t cpus.
> 
> Then I create a master context that has a policy. 
> 
> If I submit tasks to the big_sched_ctx context, each task is transmitted to 
> the
> sub-contexts? Is this  assumption correct? I just want p parallel workers 
> with
> t threads each. I hope I got the documentation correctly.

That is the idea, yes. That simplifies managing parallel tasks: you
just statically partition the machine and the scheduler only sees
more-powerful "workers".

Samuel