Re: [OMPI users] trouble using --mca mpi_yield_when_idle 1

2008-12-18 Thread douglas . guptill
Hello Jeff, Eugene: On Fri, Dec 12, 2008 at 04:47:11PM -0500, Jeff Squyres wrote: .. > The "P" is MPI's profiling interface. See chapter 14 in the MPI-2.1 > doc. Ah...Thank you, both Jeff and Eugene, for pointing that out. I think there is a typo in chapter 14 - the first sentence isn't

Re: [OMPI users] Communications problems w/OpenMPI

2008-12-18 Thread deadchic...@gmail.com
Jeroen Kleijer wrote: However, if you're able to compile and use a version of the development branch (1.3) you should be use compile and run the "hello world" program without problems, regardless of the subnet they're in. I installed 1.3rc2 and that seems to have done the trick. On a side note

[OMPI users] Relocating an Open MPI installation using OPAL_PREFIX

2008-12-18 Thread Ethan Mallove
Hello, The below FAQ lists instructions on how to use a relocated Open MPI installation: http://www.open-mpi.org/faq/?category=building#installdirs On Solaris, OPAL_PREFIX and friends (documented in the FAQ) work for me with both MPI (hello_c) and non-MPI (hostname) programs. On Linux, I can o

Re: [OMPI users] Communications problems w/OpenMPI

2008-12-18 Thread deadchic...@gmail.com
Jeroen Kleijer wrote: The stable branch (1.2.x) works perfectly but _only_ when the communication channel between machines are in the same subnet. (ethernet) Since you don't have that much control over which subnet your machines get in, OpenMPI has a tendency to fail in Amazon's EC2. However, if

Re: [OMPI users] Communications problems w/OpenMPI

2008-12-18 Thread Jeroen Kleijer
Hi, > After compiling it, I copied it over to the other machine and tried > running it with: > > mpirun -v --mca btl self,tcp -np 4 --machinefile machines /mnt/mpihw > > which produces: [.] > AFAIK, the machines are able to communicate with each other on any port > you like, just not with MP

[OMPI users] Communications problems w/OpenMPI

2008-12-18 Thread deadchic...@gmail.com
I've been trying to get OpenMPI to work on Amazon's EC2 but I've been running into a communications problem. Here is the source (typical Hello, World): #include #include "mpi.h" int main(argc,argv) int argc; char *argv[]; { int myid, numprocs; MPI_Init(&argc,&argv); MPI_Comm_size