sub-select and run a single node experiment

ramble -D $WRKSPC on --where '{n_nodes} == 1' --executor='{execute_experiment}'

(with --executor='{execute_experiment}', we don't need to use different templates: the sbatch directives will be ignored)

enforce that a single node experiment is implemented

we could modify the prior statement to make sure there is at least one experiment that runs on a single node:

ramble --workspace-dir workspace/kripke/rocm/tioga-system/workspace/ on --where '{n_nodes} == 1' --executor="echo matchx" | grep "matchx" | wc -l

(Update Dec. 17) You can test this for example by running

./bin/benchpark system init --dest=tioga-system llnl-elcapitan rocm=5.4.3 compiler=cce ~gtl
./bin/benchpark setup kripke/rocm ./tioga-system workspace/

(notably, you do not have to execute ramble workspace setup prior to checking the number of single-node experiments)

enforce (in the allocation modifier?) that the experiment doesn't request more experiments

I assume this should be "...doesn't request more resources": ramble on --where=... will enforce this to some degree. We allow per-experiment custom templates, and I think even without that, experiments could attempt to do their own allocations (the allocation modifier would not be able to detect either of these scenarios). In terms of requests made at the level of ramble.yaml, ramble on --where=... would be enough to control that.