Re: [OMPI users] Duplicate independent processes

2011-01-05 Thread Ralph Castain
I'm afraid I don't understand your example - are you saying you provide "-np 1" and get two processes instead of 1? If so, would you please provide info on the type of system where this happens? I've never seen it with mpich or ompi On Jan 5, 2011, at 4:57 PM, Kristian Medri wrote: > Any hint

[OMPI users] Duplicate independent processes

2011-01-05 Thread Kristian Medri
Any hints on what to look for to get the second machine to behave without duplicate independent processes? "mpirun -np 2 ..." Provides as expected: "Using MPI version 2.1, 2 processes .1. .2." While on another similar machine: "Using MPI version 2.2, 1 processes .1. Using MPI version 2.2, 1 pr

Re: [OMPI users] Granular locks?

2011-01-05 Thread Alex A. Granovsky
Hi Gilbert, why not to use architecture-specific atomic updates writing to the array? In this case, you wouldn't need anything special reading from array at all. Moreover, this model looks like a good candidate to be implemented as multithreaded application, rather than two separate processes shar

Re: [OMPI users] Granular locks?

2011-01-05 Thread Gilbert Grosdidier
Hi Gijsbert, Thank you for this proposal, I think it could be useful for our LQCD application, at least for further evaluations. How could I get to the code, please ? Thanks in advance for your help, Best, G. Le 03/01/2011 22:36, Gijsbert Wiesenekker a écrit : On Oct 2, 2010, at 10:5

Re: [OMPI users] Using MPI_Put/Get correctly?

2011-01-05 Thread Grismer, Matthew J Civ USAF AFMC AFRL/RBAT
My bad, I found bug in my call to MPI_Win_create, the variable I passed was unallocated at the time of the call. Interestingly, no errors were returned from that call when I used the unallocated array... Anyway, everything is working since I corrected that, thanks for the help. Matt -Origin

[OMPI users] change between openmpi 1.4.1 and 1.5.1 about MPI2 publish name

2011-01-05 Thread Bernard Secher - SFME/LGLS
Hello, What are the changes between openMPI 1.4.1 and 1.5.1 about MPI2 service of publishing name. I have 2 programs which connect them via MPI_Publish_name and MPI_Lookup_name subroutines and ompi-server. That's OK with 1.4.1 version , but I have a deadlock with 1.5.1 version inside the subro

[OMPI users] IRC channel

2011-01-05 Thread Hicham Mouline
Hello Do people looking at this list ever join the #openmpi IRC channel. The channel seems to point to the website already. The medium could be useful to spread even more the use of openmpi. More specific channels could also be created. -beginner, -platform specific , -compilation issues, -perfo