By the way, I am using Open MPI 1.6.5 and programming with C++. On Thu, Sep 18, 2014 at 4:43 PM, XingFENG <xingf...@cse.unsw.edu.au> wrote:
> 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. > -- Best Regards.
