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geoschem / geos-chem

GEOS-Chem "Science Codebase" repository. Contains GEOS-Chem science routines, run directory generation scripts, and interface code. This repository is used as a submodule within the GCClassic and GCHP wrappers, as well as in other modeling contexts (external ESMs).
http://geos-chem.org
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How to speed up simulation？ #1514

Closed xuexb1230 closed 1 year ago

xuexb1230 commented 1 year ago

I want to use GEOS-Chem gcclassic at 0.5*0.625 resolution. Since I need to run it for a long time, I wonder if it supports multiple nodes?

yantosca commented 1 year ago

Thanks for writing @xuexb1230. GEOS-Chem Classic can only be run on a single computational node due to the fact that it uses OpenMP parallelization (which is shared-memory parallelization).

However, we would invite you to look at using GCHP if you wish to run on multiple nodes. You could use a stretched-grid simulation to increase the resolution over an area of interest. See our GCHP manual at https://gchp.readthedocs.io.

xuexb1230 commented 1 year ago

Thanks! :)