I have seen hangs when the tcp component is in use. If you are running on a single machine running with mpirun -mca btl self,vader.
-Nathan On Mon, Oct 26, 2015 at 09:17:20PM -0600, ABE Hiroshi wrote: > Dear All, > > I have a multithread-ed program and as a next step it is reconstructing to > MPI program. The code is to be MPI / Multithread hybrid one. > > The code proceeds MPI-routines as: > > 1. Send data by MPI_Isend with exlusive tag numbers to the other node. > This is done in ONE master thread. > 2. Receive the sent data by MPI_Irecv in several threads (usually the same > as the number of CPU core) and do their jobs. > > There is one main thread (main process) and one master thread and several > working threads in the code. MPI_Isend is called in the master thread. > MPI_Irecv is called in the working threads. > > My problem is MPI_Wait stalls after calling MPI_Isend. MPI_Wait is called > just after MPI_Isend. Several time the routines get through, but after > sending several data MPI_Wait stalls. > > Using Xcode debugger, the loop with c->c_signaled at line 70 of > opal_conidition_wait (opal/threads/condition.h) never escape. > > I guess I would make something wrong. I would like to know how to find the > problem. > I would be obliged if you'd point the solution or the next direction to be > investigated for debugging. > > My Environment : OSX 10.9.5, Apple LLVM 6.0 (LLVM 3.5svn), OpenMPI 1.10.0 > The thread is wxThread from wxWidgets Library (3.0.2) which is a wrapper > of pthread. > > OpenMPI is configure-ed : --enable-mpi-thread-multiple --enable-debug > --enable-event-debug > Please find the detail (config.log and ompi_info -all) attached in this > mail. > > Thank you very much in advance. > > Sincerely, > > ABE Hiroshi > from Tokorozawa, JAPAN > > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2015/10/27923.php
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