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OpenMPI的程序运行必须保持相同的目录，默认情况下，MPI的分布式节点会去~/user目录下面寻找运行的程序，如果找不到该程序，则会报出 -------------------------------------------------------------------------- mpiexec was unable to launch the specified application as it could not change to the specified working directory: Working directory: /home/norse/WorkSpace/uestc-careye/cmake-build-debug/bin Node: node1-ubuntu while attempting to start process rank 10. --------------------------------------------------------------------------
上述错误，所以必须保证运行目录一致，通过下列命令切换运行目录 mpiexec --wdir ~/WorkSpace/uestc-careye/cmake-build-debug/bin -hostfile ./hosts-list -np 3 rc_mpi_test
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