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From: Jeff Squyres <jsquy...@cisco.com>
To: Open MPI Users <us...@open-mpi.org>
Sent: Friday, 2 September 2011 9:45 PM
Subject: Re: [OMPI users] High CPU usage with yield_when_idle =1 on CFS
This might also be in reference to the issue that shed_yield() really does
nothing in recent Lin
This might also be in reference to the issue that shed_yield() really does
nothing in recent Linux kernels (there was big debate about this at
kernel.org).
IIRC, there's some kernel parameter that you can tweak to make it behave
better, but I'm afraid I don't remember what it is. Some
On 8/31/2011 11:48 PM, Randolph Pullen wrote:
I recall a discussion some time ago about yield, the Completely F%’d
Scheduler (CFS) and OpenMPI.
My system is currently suffering from massive CPU use while busy
waiting. This gets worse as I try to bump up user concurrency.
Yup.
I am running
I recall a discussion some time ago about yield, the Completely F%’d Scheduler
(CFS) and OpenMPI.
My system is currently suffering from massive CPU use while busy waiting. This
gets worse as I try to bump up user concurrency.
I am running with yield_when_idle but its not enough. Is there
