Problems when you start an MPI program
You encounter problems when you start an MPI program.
Solution
Check whether you can run a single-process (non-MPI) program such as a trivial
Hello, World!
program, resolve any issues that arise, and repeat the attempt to run a multi-process job. Use any issues that you encounter as the starting point for diagnosing the problem.Verify that MPI is working correctly by running a job without any of Linaro Forge products applied, such as the example in the examples directory of the installation.
mpirun -np 8 ./a.out
Verify that
mpirun
is in thePATH
, or the environment variableFORGE_MPIRUN
is set to the full pathname ofmpirun
.