Difference between revisions of "OpenIFS"

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== Running openIFS: ==
 
== Running openIFS: ==
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== openIFS examples: ==
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There are 3 examples currently available:
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cd $OIFS_EXAMPLES
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ls
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ei     osloctm         t21test
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=== T21 simple test: ===
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Choose a directory of your choice and copy this simple test:
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mkdir -p $HOME/openifs/examples
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cd $HOME/openifs/examples
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cp -R $OIFS_EXAMPLES/t21test .
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cd t21test
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ls
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fort.4  ICMGGepc8  ICMGGepc8INIT  ICMGGepc8INIUA  ICMSHepc8  ICMSHepc8INIT  ifsdata  job  namelists  README  ref_021_0144
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=== T319 with ERA-Interim input fields: ===
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=== T42 with ERA-Interim input fields for OsloCTM model: ===

Revision as of 11:00, 1 December 2014

OpenIFS provides academic and research institutions with an easy-to-use version of the ECMWF IFS (Integrated Forecasting System). OpenIFS provides the forecast capability of IFS (no data assimilation), supporting software and documentation. OpenIFS has a support team at ECMWF for technical assistance but limited resources for detailed scientific assistance.

About OpenIFS provides more information about the model.


How to run openIFS:


First check openifs availability on your platform. Currently openIFS is available on UIO HPC (abel.uio.no) only.

module avail openifs

-------------------------------------------------------------------------------- /cluster/etc/modulefiles ---------------------------------------------------------------------------------
openifs/38r1v04(default)


If nothing is returned, it is likely openifs is not available. If you think it should, then contact us (drift@uio.no).

To load a given  openifs version:

module load openifs/38r1v04

We suggest you specify the version you wish to use to avoid any problems if we install a new default version (as it is important to stick to the very same version for your  simulations).


When loading openifs the following environment variables are defined:

  • OIFS_CYCLE: ECMWF cycle such as 38r1 (version 38, revision 1)
  • OIFS_HOME: directory where openIFS has been installed; this can be used to check openIFS sources
  • OIFS_DATA: contains openIFS static input data. Even if you use your own compiled version of openIFS, it is NOT necessary to download these files again.
  • OIFS_EXAMPLES: directory where all openIFS examples are stored. If you wish to run one of these examples see our dedicated section on running tutorials.
  • OIFS_COMP: compilers used to create openIFS executables. We currently use intel compilers.
  • OIFS_BUILD: type of build. It triggers a set of compiler options when building openIFS. Currently set to "opt"
  • OIFS_GRIB_API_DIR: GRIB-API version used by openIFS to encode/decode GRIB files
  • MARS_LSM_PATH: land sea mask used
  • EMOS_VERSION: EMOS version (compiled with GRIB-API support). EMOS is used for interpolation routines.
  • EMOS_HOME: directory where EMOS has been installed.
  • BUFR_TABLES: bufrtables used for decoding/encoding BUFR (not used in the forecast model)
  • CREX_TABLES: crex tables used for encoding/decoding CREX data.


For building openIFS, we use interl compilers:

module list
Currently Loaded Modulefiles:
  1) use.own                3) openmpi.intel/1.6.1    5) hdf5/1.8.9_intel       7) grib_api/1.12.3        9) udunits/2.2.16        11) intelmpi.intel/4.1.3
  2) intel/2011.10          4) python2/2.7.3          6) netcdf.intel/4.2.1.1   8) perlmodules/5.10_2    10) intel/2013.sp1.1      12) openifs/38r1v04


Running openIFS:

openIFS examples:

There are 3 examples currently available:

cd $OIFS_EXAMPLES

ls

ei     osloctm         t21test


T21 simple test:

Choose a directory of your choice and copy this simple test:

mkdir -p $HOME/openifs/examples

cd $HOME/openifs/examples

cp -R $OIFS_EXAMPLES/t21test .

cd t21test

ls

fort.4  ICMGGepc8  ICMGGepc8INIT  ICMGGepc8INIUA  ICMSHepc8  ICMSHepc8INIT  ifsdata  job  namelists  README  ref_021_0144


T319 with ERA-Interim input fields:

T42 with ERA-Interim input fields for OsloCTM model: