Bashscripts.org

Hi all


I'm running stuff with mpi :

#!/bin/bash
BASE='-np 4 my_app --help'
mpiexec "$BASE"

why does this not work?? as I understand variables (from a lot of sources on the net) it should just replace the last line to :

mpiexec -np 4 my_app --help

..but the result is crap
is it possible to do this right?

in my final script I have a lot of mpiexec lines, I don't want to write all the arguments (which are much more than in my example) all the time, makes it to difficult to make changes


thanks for reading!

Best regards,

Victor

The quoting here iis good and will make sure all space separated variables are combined as one string into the variable.

The quoting here is not good, because this too will combine the contents of the $BASE variable as one string and pass the one string as one parameter to mpiexec. If you remove the double-quotes, the substitution will make sure all space separated content in $BASE will be treated as separate arguments.
Just remove the double quotes and it should work.