Hi all,
I’m testing my application on a SMP workstation (dual Intel Xeon E5-2697 V4 2.3
GHz Intel Broadwell (boost 2.8-3.1GHz) processors 128GB RAM) and am seeing a 4x
performance drop compared to a cluster system with 2.6GHz Intel Haswell with 20
cores / node and 128GB RAM/node. Both applicat
> By the way, the workstation has a total of 36 cores / 72 threads, so using
> mpirun
> -np 20 is possible (and should be equivalent) on both platforms.
>
> Thanks,
> cap79
>
>> On Feb 1, 2017, at 2:52 PM, Andy Witzig wrote:
>>
>> Hi all,
>>
&g
see
noticeable differences using fillup vs round robin, not 4x though. Fillup is
more shared memory use while round robin uses more infinniband.
Doug
> On Feb 1, 2017, at 3:25 PM, Andy Witzig wrote:
>
> Hi Tom,
>
> The cluster uses an Infiniband interconnect. On the cluster
hy the performance is
> different.
>
> On Feb 1, 2017, at 2:46 PM, Andy Witzig wrote:
>
> Honestly, I’m not exactly sure what scheme is being used. I am using the
> default template from Penguin Computing for job submission. It looks like:
>
> #PBS -S /bin/bash
> #PB
Feb 1, 2017, at 2:46 PM, Andy Witzig <mailto:cap1...@icloud.com>> wrote:
>
> Honestly, I’m not exactly sure what scheme is being used. I am using the
> default template from Penguin Computing for job submission. It looks like:
>
> #PBS -S /bin/bash
> #PBS -q T30
>
17 at 6:36 PM, Andy Witzig wrote:
> Thank for the idea. I did the test and only get a single host.
>
> Thanks,
> Andy
>
> On Feb 1, 2017, at 5:04 PM, r...@open-mpi.org wrote:
>
> Simple test: replace your executable with “hostname”. If you see multiple
> hosts come ou
oth systems?
Do you have performance tools available on the systems where you can see in
which part of the Program the time is lost? Common tools would be Score-P/
Vampir/CUBE, TAU, extrae/Paraver.
Best
Christoph
On Wednesday, 1 February 2017 21:09:28 CET Andy Witzig wrote:
> Thank you, Benne
less
likely to interfere with each other.
-Tom
From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Andy Witzig
Sent: Monday, February 06, 2017 8:25 AM
To: Open MPI Users
Subject: Re: [OMPI users] Performance Issues on SMP Workstation
Hi all,
My apologies for not replying
