Simultaneously run a number of independent EnergyPlus simulations on multiple cores on Linux via a script.

edit

My current approach is to use a python script to create a batch file that includes all the simulations, one per line. And to then pass the batch file to the 'parallel' command in linux to run the batch file. I can provide additional information if you think this would be a useful approach for you, but in the meantime here is a basic outline.

'parallel' man page: https://docs.oracle.com/cd/E36784_01/...

example usage (to run 6 jobs simultaneously): parallel -j 6 --progress --no-notice < batch.sh

and the batch.sh file would contain something like this: energyplus --weather /path_to_wth_files/AUS_VIC.Melbourne.948680_RMY.epw --output-prefix result --output-suffix C file1.idf energyplus --weather /path_to_wth_files/AUS_VIC.Melbourne.948680_RMY.epw --output-prefix result --output-suffix C file2.idf energyplus --weather /path_to_wth_files/AUS_VIC.Melbourne.948680_RMY.epw --output-prefix result --output-suffix C file3.idf

You might need to play around with this idea a little bit because my batch file doesn't look quite like that. Each line of my batch file is a call to another python script that creates a temporary directory and runs energyplus in that directory. If you go down this route (i.e. with temp directories) then you will likely hit some of the same issues I did (such as needing an Energy+.ini file in the temp directory).

Sorry that this is only a partial answer but hopefully of some use.

And lastly, I'm running on a fairly old 8-core intel machine and for my system there isn't much benefit in running more than 5-way parallel.

You can use Python module multiprocessing and modify the codes in Ref (2) to run on multiple cores.

eppy will be able to run energyplus on multiple cores. It is not well documented in the user documentation - see https://eppy.readthedocs.io/en/latest....

You may be able to figure it out from the code and the unit tests

• code is here - https://github.com/santoshphilip/eppy...
• unit tests are here:
  • https://github.com/santoshphilip/eppy...
  • https://github.com/santoshphilip/eppy...

We would be mighty obliged if you can help improve the documentation.

One option is to use the parallel gen in ruby. Example:

# gem for running jobs in parallel
require 'parallel'
num_parallel = 4
Parallel.each(jobs, in_threads: num_parallel) do |job|
  puts job
  system(job)
end