Hi all, I met an odd problem when using multiple node to write one file on orangefs. I have two node (node0, node1) and my MPI is OpenMPI-3.0 and orangefs-2.9. I just do a simple experiment like using multiple processes to write one shared file. When the processes is in one node, everything is fine (POSIX I/O, MPI-IO). But when the processes is among two nodes (mpirun --hostfile), the program failed to open a new file (POPSIX I/O failed in open64() and MPI_IO failed in MPI_File_open() ).
Did anyone meet this problem before? Any help is appreciated. Thank you! Vinson
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