Re: [OMPI users] Randomly long (100ms vs 7000+ms) fulfillment of MPI_Ibcast

2014-11-07 Thread Steven Eliuk
o:us...@open-mpi.org>> Subject: Re: [OMPI users] Randomly long (100ms vs 7000+ms) fulfillment of MPI_Ibcast The CUDA person is now responding. I will try and reproduce. I looked through the zip file but did not see the mpirun command. Can this be reproduced with –np 4 running across fo

Re: [OMPI users] Randomly long (100ms vs 7000+ms) fulfillment of MPI_Ibcast

2014-11-06 Thread Rolf vandeVaart
ort or not. " Can you provide more detail about what that means? Thanks From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Ralph Castain Sent: Thursday, November 06, 2014 1:05 PM To: Open MPI Users Subject: Re: [OMPI users] Randomly long (100ms vs 7000+ms) fulfillment of MPI_Ibcas

Re: [OMPI users] Randomly long (100ms vs 7000+ms) fulfillment of MPI_Ibcast

2014-11-06 Thread Ralph Castain
t; Date: Monday, November 3, 2014 at 10:02 AM > To: Open MPI Users mailto:us...@open-mpi.org>> > Subject: Re: [OMPI users] Randomly long (100ms vs 7000+ms) fulfillment of > MPI_Ibcast > > Which version of OMPI were you testing? > >> On Nov 3, 2014, at 9:14 AM, Steven El

Re: [OMPI users] Randomly long (100ms vs 7000+ms) fulfillment of MPI_Ibcast

2014-11-05 Thread Steven Eliuk
: +1 408-819-4407. From: Ralph Castain mailto:rhc.open...@gmail.com>> Reply-To: Open MPI Users mailto:us...@open-mpi.org>> List-Post: users@lists.open-mpi.org Date: Monday, November 3, 2014 at 10:02 AM To: Open MPI Users mailto:us...@open-mpi.org>> Subject: Re: [OMPI users] Rando

Re: [OMPI users] Randomly long (100ms vs 7000+ms) fulfillment of MPI_Ibcast

2014-11-03 Thread Ralph Castain
Which version of OMPI were you testing? > On Nov 3, 2014, at 9:14 AM, Steven Eliuk wrote: > > Hello, > > We were using OpenMPI for some testing, everything works fine but randomly, > MPI_Ibcast() > takes long time to finish. We have a standalone program just to test it. The > following > is

[OMPI users] Randomly long (100ms vs 7000+ms) fulfillment of MPI_Ibcast

2014-11-03 Thread Steven Eliuk
Hello, We were using OpenMPI for some testing, everything works fine but randomly, MPI_Ibcast() takes long time to finish. We have a standalone program just to test it. The following is the profiling results of the simple test program on our cluster: Ibcast 604 mb takes 103 ms Ibcast 608 mb ta