check whether nvidia-smi/rocm-smi command is available before trying to run it in get_gpu_info
#4131
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Currently the function calls
run_cmd
which throws on error AND checks the exit code which is redundant and causes a log message"ERROR EasyBuild crashed with an error ..."
to be logged on error which is confusing as e.g it is VERY unlikely bothnvidia-smi
androcm-smi
are on the system.So check for existance first and suppress output and error checking of
run_cmd
.