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Name

mkrunfile - create a runfile looping over selected parameters of a

program

Synopsis

mkrunfile.py [options] program p1=v11,v12,... p2=...

Description

mkrunfile helps writing a runfile, which is a script in which each line can be run serially or in parallel.

runfiles are useful if your code is single-core but you still want to make use of modern multi-core systems, or how HPC systems set up their virtual CPUs.

Options

Options are not parsed yet. 
  -r rundir        add a rundir
  -l logfile       add a logfile

Examples

Here is an example running looping over 2 values in 2 parameters, while keep one parameter constant.

% mkrunfile.py hackcode1 eps=0.025,0.05 tol=0.5,1 seed=1 > test.run
% cat test.run
hackcode1 rundir=run_0001 eps=0.025 tol=0.5 seed=1
hackcode1 rundir=run_0002 eps=0.05 tol=0.5 seed=1
hackcode1 rundir=run_0003 eps=0.025 tol=1 seed=1
hackcode1 rundir=run_0004 eps=0.05 tol=1 seed=1

after this there are currently three ways to process these runfiles:

# simple bash
bash test.run

# gnu parallel
parallel -j 4 < test.run

# nemo’s sbatch frontend
sbatch_nemo.sh test.run

Caveats

Need to ensure each command in the runfile can also be run in parallel, so there should be no data overlap.

See Also

parallel(1) , sbatch(1) , tricks(8NEMO)

Author

Peter Teuben.

Update History


4-feb-2025    drafted, many features no implemented    PJT

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