Runtime arguments

[nizomovs]

The @EXTRA_ARGS@ @-variable used in the experiments args field only allows passing arguments to the experiment. However, runtime arguments can not be passed as an experimental parameter to the runtime.

For example: If you have an MPI application, you would have to hard code i.e. the number of nodes to be used.

experiments:
  - name: test
    args: ['srun', ..., '-n8', '@EXTRA_ARGS@']
    stdout: out

Or using the built-in num_nodes fields:

experiments:
  - name: test
    args: ['srun', ..., '@EXTRA_ARGS@']
    num_nodes: 8
    stdout: out

If you wanted to run the same experiment but with a different number of nodes, you'd have to add a duplicate of that experiment and change the number of nodes.

It would be more convenient to add a @RUNTIME_ARGS@ variable. The runtime arguments could be specified similarly to experiment arguments with variants and a matrix.