Re: [OMPI users] Problem with openmpi and infiniband

2008-12-28 Thread Pavel Shamis (Pasha)
Another thing to try is a change that we made late in the Open MPI v1.2 series with regards to IB: http://www.open-mpi.org/faq/?category=openfabrics#v1.2-use-early-completion Thanks, this is something worth investigating. What would be the exact syntax to use to turn off pml_ob1_use_

[OMPI users] segmentation fault in opal_free_list_grow (derived datatypes + onesided)

2008-12-28 Thread doriankrause
Hi List, the attached test program (bsm-db.cc) always dies in malloc called from opal_free_list (backtrace in error.txt and valgrind (vg*) output can be found in the tar file). It seems that there is an invalid write in ompi_osc_pt2pt_sendreq_send. I checked the derived datatype using the che

[OMPI users] openMPI, transfer data from multiple sources to one destination

2008-12-28 Thread Jack Bryan
HI, I need to transfer data from multiple sources to one destination. The requirement is: (1) The sources and destination nodes may work asynchronously. (2) Each source node generates data package in their own paces. And, there may be many packages to send. Whenever, a data package

Re: [OMPI users] openMPI, transfer data from multiple sources to one destination

2008-12-28 Thread Win Than Aung
please refer to following code, which sends data to root from multiple cour There is only one receive, so it receives only one message. When you specify the element count for the receive, you're only specifying the size of the buffer into which the message will be received. Only after the messa

Re: [OMPI users] openMPI, transfer data from multiple sources to one destination

2008-12-28 Thread Terry Frankcombe
It sounds like you may like to read about MPI_ANY_SOURCE as the source for MPI_Recv. Using MPI_Probe, with MPI_ANY_SOURCE, may also be a solution. > HI, > > I need to transfer data from multiple sources to one destination. > The requirement is: > > (1) The sources and destination nodes may work