wiki:basicInstall

Basic installations instructions

Installation of iLOVECLIM on obelix (LSCE)

To install iloveclim, open a terminal, go to the chosen directory, and type:

  • To get the iLOVECLIM code with svn:
    svn co svn+ssh://forge.ipsl.jussieu.fr/ipsl/forge/projets/ludus/svn/trunk iloveclim/.
    
  • To load the modules:
    module load netcdf
    
    module load udunits
    
  • To install everything:
    ./install_ludus.sh 
    

You can then start the test run:

./bin/loveclim-new-run

If everything is ok it should have run.

Running iLOVECLIM

To start a run:

nohup ./bin/loveclim-new-run -l LH -n 500 -r 250 > run_LH &

starts a simulation called LH which lasts 500 years and writes restart files every 250 years, starting from the default initial conditions.

To see more options:

./bin/loveclim-new-run -h

OpenMP

As of version 758, there is a possibility to run with OpenMP activated. Just use the "-p" switch in the call e.g.:

./binloveclim-new-run -l LH -n 500 -r 250 -p

this will by default use all cores available on the given machine.

The expected performance increase is of about 40-50% on 4 cores, slightly more with carbon cycle activated, at time of writing (2017-11-30).
An example of the comparative performance is displayed below:

Last modified 2 days ago Last modified on 12/13/17 15:42:04

Attachments (2)

Download all attachments as: .zip