Hi Jack Usually MPI_ERR_TRUNCATE means that the buffer you use in MPI_Recv (or MPI::COMM_WORLD.Recv) is too sdmall to hold the message coming in. Check your code to make sure you assign enough memory to your buffers.
regards Jody On Mon, Nov 1, 2010 at 7:26 AM, Jack Bryan <dtustud...@hotmail.com> wrote: > HI, > In my MPI program, master send many msaages to another worker with the same > tag. > The worker uses > s > MPI::COMM_WORLD.Recv(&message_para_to_one_worker, 1, > message_para_to_workers_type, 0, downStreamTaskTag); > to receive the messages > I got error: > > n36:94880] *** An error occurred in MPI_Recv > [n36:94880] *** on communicator MPI_COMM_WORLD > [n36:94880] *** MPI_ERR_TRUNCATE: message truncated > [n36:94880] *** MPI_ERRORS_ARE_FATAL (your MPI job will now abort) > [n36:94880] *** Process received signal *** > [n36:94880] Signal: Segmentation fault (11) > [n36:94880] Signal code: Address not mapped (1) > > Is this (the same tag) the reason for the errors ? > ANy help is appreciated. > thanks > Jack > Oct. 31 2010 > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
