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
: [OMPI users] Performance Issues on SMP Workstation
Hi all,
My apologies for not replying sooner on this issue - I’ve been swamped with
other tasking. Here’s my latest:
1.) I have looked deep into bindings on both systems (used --report-bindings
option) and nothing came to light. I’ve tried
just using the command: mpirun -np 20
> > ?. I haven?t finished setting Torque/PBS up yet.
> >
> > Best regards,
> > Andy
> >
> > On Feb 1, 2017, at 4:10 PM, Elken, Tom >
> > wrote:
> >
> > For this case: " a cluster system with 2.6GHz I
> > requesting: #PBS -l walltime=24:00:00,nodes=1:ppn=20. So technically,
> > > the run on the cluster should be SMP on the node, since there are 20
> > > cores/node. On the workstation I?m just using the command: mpirun -np
> 20
> > > ?. I haven?t finished setting
Best regards,
> > Andy
> >
> > On Feb 1, 2017, at 4:10 PM, Elken, Tom wrote:
> >
> > For this case: " a cluster system with 2.6GHz Intel Haswell with 20 cores
> > / node and 128GB RAM/node. "
> >
> > are you running 5 ranks per node on 4
> -Tom
>
> -Original Message-
> From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Andrew
> Witzig
> Sent: Wednesday, February 01, 2017 1:37 PM
> To: Open MPI Users
> Subject: Re: [OMPI users] Performance Issues on SMP Workstation
>
> By
e cluster?
>
> -Tom
>
> -Original Message-
> From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Andrew
> Witzig
> Sent: Wednesday, February 01, 2017 1:37 PM
> To: Open MPI Users
> Subject: Re: [OMPI users] Performance Issues on SMP Workstation
>
gt; node and 128GB RAM/node. "
>>
>> are you running 5 ranks per node on 4 nodes?
>> What interconnect are you using for the cluster?
>>
>> -Tom
>>
>>> -Original Message-
>>> From: users [mailto:users-boun...@lists.open-mpi.org
&
al Message-
> From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Andrew
> Witzig
> Sent: Wednesday, February 01, 2017 1:37 PM
> To: Open MPI Users
> Subject: Re: [OMPI users] Performance Issues on SMP Workstation
>
> By the way, the workstation has a tota
>
> -Original Message-
> From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Andrew
> Witzig
> Sent: Wednesday, February 01, 2017 1:37 PM
> To: Open MPI Users
> Subject: Re: [OMPI users] Performance Issues on SMP Workstation
>
> By the way, the workstati
gt; -Tom
>>
>>> -----Original Message-
>>> From: users [mailto:users-boun...@lists.open-mpi.org
>>> <mailto:users-boun...@lists.open-mpi.org>] On Behalf Of Andrew
>>> Witzig
>>> Sent: Wednesday, February 01, 2017 1:37 PM
>>&g
t are you using for the cluster?
>
> -Tom
>
>> -Original Message-
>> From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Andrew
>> Witzig
>> Sent: Wednesday, February 01, 2017 1:37 PM
>> To: Open MPI Users
>> Subject: Re: [OMPI users] Perf
uot;
>
> are you running 5 ranks per node on 4 nodes?
> What interconnect are you using for the cluster?
>
> -Tom
>
>> -Original Message-
>> From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Andrew
>> Witzig
>> Sent: Wednesday, February 01
using for the cluster?
-Tom
> -Original Message-
> From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Andrew
> Witzig
> Sent: Wednesday, February 01, 2017 1:37 PM
> To: Open MPI Users
> Subject: Re: [OMPI users] Performance Issues on SMP Workstation
>
open-mpi.org] On Behalf Of Andrew
> Witzig
> Sent: Wednesday, February 01, 2017 1:37 PM
> To: Open MPI Users
> Subject: Re: [OMPI users] Performance Issues on SMP Workstation
>
> By the way, the workstation has a total of 36 cores / 72 threads, so using
> mpirun
> -np 20 i
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,
>
> I’m testing my application on a SMP workstation (dual Intel Xeon E
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
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