Re: [OMPI users] MPI_CANCEL

2008-04-18 Thread slimtimmy
Thank you very much for your comments. I worked around the problem so I don't need MPI_Cancel anymore. Hi slimtimmy I have been involved in several of the MPI Forum's discussions of how MPI_Cancel should work and I agree with your interpretation of the standard. By my read

[OMPI users] MPI_CANCEL

2008-04-15 Thread slimtimmy
I encountered some problems when using MPI_CANCEL. I call Request::Cancel followed by Request::Wait to ensure that the request has been cancelled. However Request::Wait does not return when I send bigger messages. The following code should reproduce this behaviour: #include "mpi.h" #include usi

Re: [OMPI users] communicating with the caller

2008-03-26 Thread slimtimmy
There is a chapter in the MPI standard about this. Usually, people will use comm accept/connect to do such kind of things. No need to have your own communication protocol. george. Thank you very much. Exactly the information I was looking for! Best regards Timm

[OMPI users] communicating with the caller

2008-03-25 Thread slimtimmy
I'm new to OpenMPI and would like to know whether there is a common way for a caller of mpirun to communicate with the mpi processes. Basically I have a setup where one process is responsible for distributing jobs to other mpi processes and collecting the respective results afterwards. Now for exa