Dear all, I am new to MPI. Please forgive me if I ask a redundant question.
I am now programming about graph processing using MPI. I get two problems as described below. a. How to get more information about errors? I got errors like below. This says that program exited abnormally in function *MPI_Test().* But is there a way to know more about the error? **** An error occurred in MPI_Test*** on communicator MPI_COMM_WORLD*** MPI_ERR_TRUNCATE: message truncated*** MPI_ERRORS_ARE_FATAL: your MPI job will now abort--------------------------------------------------------------------------mpirun has exited due to process rank 2 with PID 4341 onnode xing-HP-Compaq-Elite-8300-SFF exiting improperly. There are two reasons this could occur:1. this process did not call "init" before exiting, but others inthe job did. This can cause a job to hang indefinitely while it waitsfor all processes to call "init". By rule, if one process calls "init",then ALL processes must call "init" prior to termination.2. this process called "init", but exited without calling "finalize".By rule, all processes that call "init" MUST call "finalize" prior toexiting or it will be considered an "abnormal termination"This may have caused other processes in the application to beterminated by signals sent by mpirun (as reported here).--------------------------------------------------------------------------*** An error occurred in MPI_Test*** on communicator MPI_COMM_WORLD*** MPI_ERR_TRUNCATE: message truncated*** MPI_ERRORS_ARE_FATAL: your MPI job will now abort*** An error occurred in MPI_Test*** on communicator MPI_COMM_WORLD*** MPI_ERR_TRUNCATE: message truncated*** MPI_ERRORS_ARE_FATAL: your MPI job will now abort--------------------------------------------------------------------------mpirun has exited due to process rank 2 with PID 4378 onnode SFF exiting improperly. * b. Are there anything to note about asynchronous communication? I use MPI_Isend, MPI_Irecv, MPI_Test to implement asynchronous communication. My program works well on small data sets(10K nodes graphs), but it exits abnormally on large data set (1M nodes graphs). Any help would be greatly appreciated! -- Best Regards.
