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How to add Neptuno facilities to WRF4G

WRF4G uses DRM4G to access to different Distributed Resource Managements (DRM) such as:

In order to add new resources, you need to edit Computing Resources section in the framework4g.conf file, which is located under $HOME/WRF4G/etc directory. The file has to contain one resource per line with the format:

   resource_name  = attributes
   ...     ...
   resource_name  = attributes


The keys available are:

Example of configuration:

neptuno =  ssh://userid@;NODECOUNT=1500

If you want to configure Neptuno facilities using ssh protocol, you need to set up SSH login without password (see Appendix B) between MACC cluster and Neptuno, and vice-versa.

After modifying ComputingResources section, WRF4G takes few seconds in order to update the changes

In addition, you need to update WRF4G_BASEPATH, WRF4G_DOMAINPATH, WRF4G_INPUT and WRF4G_APPS variables, which are defined in resources.wrf4g file. Due to the fact that these variables may point to other machines. See running environment for more information.

Example of configuration:


Neptuno Running Options

NP: Number of processors requested in a parallel job. It is highly recommendable to use PPN variable in order to indicate the number of processors available per node. For example, NP = 4 and REQUIREMENTS = 'PPN = 4' which means 4 processors on one node.

NP = 16

Seawing Package Version

WRF4G_VERSION : WRF4G version to use. A file WRF4G-[WRF4G_VERSION].tar.gz must exist under $HOME/etc/templates.

WRF_VERSION: WRFbin version to use. A file WRFbin-[WRF_VERSION].tar.gz must exist under $WRF4G_APPS.