Re: [OMPI users] Threading models with openib

2010-06-18 Thread Brad Benton
On Wed, Jun 9, 2010 at 7:58 AM, Jeff Squyres wrote: > On Jun 8, 2010, at 12:33 PM, David Turner wrote: > > > Please verify: if using openib BTL, the only threading model is > MPI_THREAD_SINGLE? > > Up to MPI_THREAD_SERIALIZED. > > > Is there a timeline for full support of MPI_THREAD_MULTIPLE in

Re: [OMPI users] Threading models with openib

2010-06-09 Thread Jeff Squyres
On Jun 8, 2010, at 12:33 PM, David Turner wrote: > Please verify: if using openib BTL, the only threading model is > MPI_THREAD_SINGLE? Up to MPI_THREAD_SERIALIZED. > Is there a timeline for full support of MPI_THREAD_MULTIPLE in Open MPI's > openib BTL? IBM has been making some good strides

[OMPI users] Threading models with openib

2010-06-08 Thread David Turner
Hi all, Please verify: if using openib BTL, the only threading model is MPI_THREAD_SINGLE? Is there a timeline for full support of MPI_THREAD_MULTIPLE in Open MPI's openib BTL? Thanks! -- Best regards, David Turner User Services Groupemail: dptur...@lbl.gov NERSC Division

Re: [OMPI users] threading bug?

2009-03-06 Thread Douglas Guptill
I once had a crash in libpthread something like the one below. The very un-obvious cause was a stack overflow on subroutine entry - large automatic array. HTH, Douglas. On Wed, Mar 04, 2009 at 03:04:20PM -0500, Jeff Squyres wrote: > On Feb 27, 2009, at 1:56 PM, Mahmoud Payami wrote: > > >I am u

Re: [OMPI users] threading bug?

2009-03-04 Thread Jeff Squyres
On Feb 27, 2009, at 1:56 PM, Mahmoud Payami wrote: I am using intel lc_prof-11 (and its own mkl) and have built openmpi-1.3.1 with connfigure options: "FC=ifort F77=ifort CC=icc CXX=icpc". Then I have built my application. The linux box is 2Xamd64 quad. In the middle of running of my applic

[OMPI users] threading bug?

2009-02-27 Thread Mahmoud Payami
Dear All, I am using intel lc_prof-11 (and its own mkl) and have built openmpi-1.3.1 with connfigure options: "FC=ifort F77=ifort CC=icc CXX=icpc". Then I have built my application. The linux box is 2Xamd64 quad. In the middle of running of my application (after some 15 iterations), I receive the

[OMPI users] Threading fault

2009-02-27 Thread Mahmoud Payami
Dear All, I am using intel lc_prof-11 (and its own mkl) and have built openmpi-1.3.1 with connfigure options: "FC=ifort F77=ifort CC=icc CXX=icpc". Then I have built my application. The linux box is 2Xamd64 quad. In the middle of running of my application (after some 15 iterations), I receive the

[OMPI users] Threading fault(?)

2009-02-26 Thread Mahmoud Payami
Dear All, I have installed openmpi-1.3.1 (with the defaults), and built my application. The linux box is 2Xamd64 quad. In the middle of running of my application, I receive the message and stops. I tried to configure openmpi using "--disable-mpi-threads" but it automatically assumes "posix". This

Re: [OMPI users] threading

2007-03-22 Thread Jeff Squyres
Open MPI currently has minimal use of hidden "progress" threads, but we will likely be experimenting with more usage of them over time (previous MPI implementations have shown that progress threads can be a big performance win for large messages, although they do tend to add a bit of latenc

Re: [OMPI users] threading

2007-03-21 Thread David Burns
I have used POSIX threading and Open MPI without problems on our Opteron 2216 Cluster (4 cores per node). Moving to core-level parallelization with multi threading resulted in significant performance gains. Sam Adams wrote: I have been looking, but I haven't really found a good answer about sy

[OMPI users] threading

2007-03-21 Thread Sam Adams
I have been looking, but I haven't really found a good answer about system level threading. We are about to get a new cluster of dual-processor quad-core nodes or 8 cores per node. Traditionally I would just tell MPI to launch two processes per dual processor single core node, but with eight cor