[OMPI users] OMPI Collectives

2006-10-28 Thread Tony Ladd
George Thanks for the references. However, I was not able to figure out if it what I am asking is so trivial it is simply passed over or so subtle that its been overlooked (I suspect the former). The binary tree algorithm in MPI_Allreduce takes a tiume proportional to 2*N*log_2M where N is the vec

[OMPI users] Xgrid and Kerberos

2006-10-28 Thread openmpi-user
What's the proper setup for using kerberos-single-sign-on with OpenMPI? For now I've added the two environment variable XGRID_CONTROLLER_HOSTNAME and XGRID_CONTROLLER_PASSWORD to submit jobs to the grid. Yours, Frank

Re: [OMPI users] BLACS vs. OpenMPI 1.1.1 & 1.3

2006-10-28 Thread Ake Sandgren
On Sat, 2006-10-28 at 08:45 -0400, Jeff Squyres wrote: > Sorry for the delay on this -- is this still the case with the OMPI > trunk? > > We think we finally have all the issues solved with MPI_ABORT on the > trunk. > Nah, it was a problem with overutilization, i.e. 4tasks on 2 cpus in one n

Re: [OMPI users] BLACS vs. OpenMPI 1.1.1 & 1.3

2006-10-28 Thread Jeff Squyres
Sorry for the delay on this -- is this still the case with the OMPI trunk? We think we finally have all the issues solved with MPI_ABORT on the trunk. On Oct 16, 2006, at 8:29 AM, Åke Sandgren wrote: On Mon, 2006-10-16 at 10:13 +0200, Åke Sandgren wrote: On Fri, 2006-10-06 at 00:04 -04