Hello, I am an undergraduate student. I have never worked with MPI and I have to use the Einstein Toolkit code which uses MPI for my project. I am running it on my personal laptop, it has two cores and four threads. I get this error in my simulation: *Fatal error in PMPI_Comm_rank: Invalid communicator, error stack:PMPI_Comm_rank(110): MPI_Comm_rank(comm=0x57ed58e0, rank=0x7ffe6cb18148) failedPMPI_Comm_rank(68).: Invalid communicator[unset]: write_line error; fd=-1 buf=:cmd=abort exitcode=609541:system msg for write_line failure : Bad file descriptor-------------------------------------------------------Primary job terminated normally, but 1 process returneda non-zero exit code.. Per user-direction, the job has been aborted.---------------------------------------------------------------------------------------------------------------------------------mpirun detected that one or more processes exited with non-zero status, thus causingthe job to be terminated. The first process to do so was: Process name: [[32146,1],0] Exit code: 5--------------------------------------------------------------------------* Please let me know what the problem is and how to solve it. Thank You Regards *Swarnim Shashank* Fourth Year Integrated MSc. Student UM-DAE-Centre for Excellence in Basic Sciences Mumbai _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss