Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-06 Thread Andy Witzig
unning on different cores, and 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 <users@lists.open-mpi.org> Subject: Re: [OMPI users] Performance Issues on SMP

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-06 Thread Elken, Tom
pen-mpi.org> Subject: Re: [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 nothin

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-06 Thread Andy Witzig
ing 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 <tom.el...@intel.com <javascript:;>> > > wrote: > > > > For this c

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-02 Thread Gilles Gouaillardet
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 Torque/PBS up yet. &g

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-02 Thread niethammer
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 <tom.el...@intel.com> wrote: > > > > For this case: " a cluster syst

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Andy Witzig
0 cores / > 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] On Behalf Of Andrew > Witzig >

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Bennet Fauber
de 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] On Behalf Of Andrew > Witzig > Sen

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Andy Witzig
; 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 nodes? >> What interconnect are you using for the cluster? >> >> -To

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Andy Witzig
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, 201

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Bennet Fauber
. " > > 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, 2017 1:3

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread r...@open-mpi.org
t; 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 >>> <mailto:users-boun...@lists.open-mpi.org

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Andy Witzig
> 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

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Douglas L Reeder
t;> 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 is po

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Andy Witzig
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, 2017 1:37 PM > To: Open MPI Users > Subject: Re: [OMPI users] Per

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Elken, Tom
sts.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

Re: [OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Andrew Witzig
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

[OMPI users] Performance Issues on SMP Workstation

2017-02-01 Thread Andy Witzig
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