...@open-mpi.org] On Behalf
Of Jeff Squyres
Sent: Friday, November 02, 2012 9:32 AM
To: Open MPI Users
Subject: Re: [OMPI users] EXTERNAL: Re: openmpi shared memory feature
What's the memory usage on your nodes -- are you invoking swap, perchance?
Can you try one of the other shared memory mecha
er 01, 2012 12:25 AM
> To: Open MPI Users
> Cc: Hodge, Gary C
> Subject: Re: [OMPI users] EXTERNAL: Re: openmpi shared memory feature
>
>
> On Oct 30, 2012, at 09:57 , Jeff Squyres wrote:
>
>> On Oct 30, 2012, at 9:51 AM, Hodge, Gary C wrote:
>>
>>> FY
Cc: Hodge, Gary C
Subject: Re: [OMPI users] EXTERNAL: Re: openmpi shared memory feature
On Oct 30, 2012, at 09:57 , Jeff Squyres wrote:
> On Oct 30, 2012, at 9:51 AM, Hodge, Gary C wrote:
>
>> FYI, recently, I was tracking down the source of page faults in our
>> application
On Oct 30, 2012, at 09:57 , Jeff Squyres wrote:
> On Oct 30, 2012, at 9:51 AM, Hodge, Gary C wrote:
>
>> FYI, recently, I was tracking down the source of page faults in our
>> application that has real-time requirements. I found that disabling the sm
>> component (--mca btl ^sm) eliminated m
Our measurements are not for the entire mpirun job, rather they are for the
time it takes to process a message through our processing pipeline consisting
of 11 processes distributed over 8 nodes. Taking an extra microsecond here and
there is better for us than jumping from 3 to 15 ms because th
On Oct 30, 2012, at 9:51 AM, Hodge, Gary C wrote:
> FYI, recently, I was tracking down the source of page faults in our
> application that has real-time requirements. I found that disabling the sm
> component (--mca btl ^sm) eliminated many page faults I was seeing.
Good point. This is like
FYI, recently, I was tracking down the source of page faults in our application
that has real-time requirements. I found that disabling the sm component
(--mca btl ^sm) eliminated many page faults I was seeing. I now have much
better deterministic performance in that I no longer see outlier me
