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Using Python for Parallelization

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  • van der Mensbrugghe, Dominique

Abstract

This short note describes one way of taking advantage of the multiple cores on most desktop computers. It describes running one of the processes in the GTAP build procedure called ’FIT’. The input to ’FIT’ is a balanced input-output table (IOT), which is adjusted to a number of exogenous elements including aggregate domestic absorption and import and export vectors. It is run for each of the countries/regions in the build, but there is no interaction across countries/regions and thus can be run in parallel. The procedure uses a Python script to run the ’FIT’ procedure, either sequentially or in parallel. Most of the code is generic and thus it can be easily adapted to other programs that can take advantage of parallelism, for example Monte Carlo simulations. For the tested ’FIT’ procedure, it reduces the runtime from 75 minutes to 14 minutes on a relatively new desktop with a 12th Generation Intel Core I-9 CPU with 16 physical cores.

Suggested Citation

  • van der Mensbrugghe, Dominique, 2023. "Using Python for Parallelization," GTAP Working Papers 6826, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
    • Handle: RePEc:gta:workpp:6826
    Note: GTAP Working Paper No. 93
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    File URL: https://www.gtap.agecon.purdue.edu/resources/res_display.asp?RecordID=6826
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    References listed on IDEAS

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    1. Dietz, Simon & Rising, James & Stoerk, Thomas & Wagner, Gernot, 2021. "Economic impacts of tipping points in the climate system," LSE Research Online Documents on Economics 111807, London School of Economics and Political Science, LSE Library.
    2. J Mark Horridge & Ken Pearson, 2006. "Running Simulations Faster on Multi-Processor or 64-Bit PCs via GEMPACK," Centre of Policy Studies/IMPACT Centre Working Papers c15, Victoria University, Centre of Policy Studies/IMPACT Centre.
    3. Simon Dietz & James Rising & Thomas Stoerk & Gernot Wagner, 2021. "Economic impacts of tipping points in the climate system," Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, vol. 118(34), pages 2103081118-, August.
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