GEOS-Chem required hardware
- Minimum system requirements for GEOS-Chem
- Installing required software
- Configuring your computational environment
- Downloading source code
- Downloading data directories
- Creating run directories
- Configuring runs
- Output files
- Python tools for use with GEOS-Chem
- Coding and debugging
- Further reading
System requirements for GEOS-Chem Classic
Computer system requirements
Before you can run GEOS-Chem, you will need to have the following items. Some of these will be already pre-installed on your computer system.
|EITHER||You will need a Unix operating system environment in order to run GEOS-Chem. Any flavor of Unix (e.g. CentOS, Ubuntu, Fedora, etc.) should work just fine.|
An account on the Amazon Web Services cloud
|If your institution has computational resources (e.g. a shared computer cluster with many cores, sufficient disk storage and memory), then you can run GEOS-Chem there. Contact your IT staff for assistance.
If your institution lacks computational resources (or if you need additional computational resources beyond what is available), then you should consider signing up for access to the Amazon Web Services cloud. Using the cloud has the following advantages:
GEOS-Chem 12.0.0 and later versions can be used on the Amazon Web Services cloud computing platform. You can learn more about how to use GEOS-Chem on the cloud by visiting this tutorial (cloud.geos-chem.org).
If you plan to run GEOS-Chem on a local computer system, please make sure that your system has sufficient memory and disk space:
|Enough memory to run GEOS-Chem||For the 4° x 5° "standard" simulation
For the 2° x 2.5° "standard" simulation:
Our standard GEOS-Chem Classic 1-month full-chemistry benchmark simulations (cf. GEOS-Chem 13.0.0-beta.0) use a little under 14 GB of system memory. This is mostly due to the fact that the benchmark simulations archive the "kitchen sink"—that is, most diagnostic outputs are requested so that the benchmark simulation can be properly evaluated. But a typical GEOS-Chem Classic production simulation would not require all of these diagnostic outputs, and thus would use much less memory than the benchmark simulations.
|Extra memory for special simulations||You may want to consider at least 30 GB RAM if you plan on doing any of the following: