| Version 66 (modified by carlos, 9 years ago) (diff) |
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How to run a simple experiment
Before you start this tutorial make sure that WRF4G is correctly installed on your machine. To do so follow the Installation instructions
Start wrf4g_framework and list computing resources
Firstly, check if WRF4G framework is running:
[user@localhost ~]$ wrf4g_framework status DRM4G (GridWay) is NOT running WRF4G_DB (MySQL) NOT running
if WRF4G framework is not running, you should execute:
[user@localhost ~]$ wrf4g_framework start Starting DRM4G (GridWay) .... OK Starting WRF4G_DB (MySQL) ... OK
By doing this, you will start the services that manage the CR and keep track of the experiments.
Note that if you do not start wrf4g_framework, you won not be able to work with WRF4G.
By default, WRF4G framework is configured to use the computer where WRF4G has been installed. In order to list the CR available, run the following command:
[user@localhost ~]$ wrf4g_resources HID PRIO OS ARCH NODES(U/F/T) LRMS HOSTNAME 0 1 GNU/Linux2.6.32 x86_64 0/1/1 FORK mycomputer
If you want to modify your CRs see Computing Resources section, which is located in $HOME/WRF4G/etc/framework4g.conf file.
Prepare and submit the test experiment
Go to the directory where the experiment configuration files are located:
[user@localhost ~]$ cd $HOME/WRF4G/experiments/single_test
Edit experiment.wrf4g and check its configuration. If you want to know more information about this experiment, you should see resources.wrf4g as well.
Run wrf4g_prepare to prepare the experiment:
[user@localhost ~]$ wrf4g_prepare Preparing namelist... WRFV3/run/namelist.input WRF Check Warning: CAM radiation selected but paerlev/levsiz/cam_abs_dim1/cam_abs_dim2 was not set. Fixing... WRF Check Warning: radt is shorter than dx (0.500000) ---> Single params run ---> Continuous run ---> cycle_chunks: test 2011-08-28_12:00:00 2011-08-30_00:00:00 ---> chunks 1: test 2011-08-28_12:00:00 2011-08-29_00:00:00 ---> chunks 2: test 2011-08-29_00:00:00 2011-08-29_12:00:00 ---> chunks 3: test 2011-08-29_12:00:00 2011-08-30_00:00:00
Check the experiment status with wrf4g_status. You will see that the experiment is in P (Prepared) status.
[user@localhost ~]$ wrf4g_status Experiment P W R D F test 1 0 0 0 0 [user@localhost ~]$ wrf4g_status --long Realization GW Stat Chunks Comp.Res WN Run.Sta ext % test - P 0/3 - - Prepared - 0.00
Submit the experiment with wrf4g_submit and check the status for a minute. You will see how the status of the experiment change into: submitted, downloading input data, ungrib, metgrid, real and wrf.
[user@localhost ~]$ wrf4g_submit Submitting realization: "test" Submitting Chunk 1: 2011-08-28_12:00:00 2011-08-29_00:00:00 Submitting Chunk 2: 2011-08-29_00:00:00 2011-08-29_12:00:00 Submitting Chunk 3: 2011-08-29_12:00:00 2011-08-30_00:00:00 [user@localhost ~]$ wrf4g_status Experiment P W R D F test 0 1 0 0 0 [user@localhost ~]$ wrf4g_status --long Realization GW Stat Chunks Comp.Res WN Run.Sta ext % test 0 W 1/3 - - Submitted - 0.00 [user@localhost ~]$ wrf4g_status --long Realization GW Stat Chunks Comp.Res WN Run.Sta ext % test 0 W 1/3 - localhost ungrib - 0.00 [user@localhost ~]$ wrf4g_status --long Realization GW Stat Chunks Comp.Res WN Run.Sta ext % test 0 W 1/3 - localhost metgrid - 0.00 [user@localhost ~]$ wrf4g_status --long Realization GW Stat Chunks Comp.Res WN Run.Sta ext % test 0 R 1/3 mycomputer localhost real - 0.00 [user@localhost ~]$ wrf4g_status --long Realization GW Stat Chunks Comp.Res WN Run.Sta ext % test 0 R 1/3 mycomputer localhost WRF - 0.00 [user@localhost ~]$ wrf4g_status --long Realization GW Stat Chunks Comp.Res WN Run.Sta ext % test 0 R 2/3 mycomputer localhost Submitted - 33.33 [user@localhost ~]$ wrf4g_status --long Realization GW Stat Chunks Comp.Res WN Run.Sta ext % test 0 R 3/3 mycomputer localhost Finished 0 100.00
The experiment has to finish with ext option 0 which means it has finalized correctly. If ext has a different code, you can look up more information about it either in WRF4G errors or in $HOME/WRF4G/lib/bash/wrf4g_exit_codes.sh file
Check the experiment output and log
The location where output and log files are stored is defined with the WRF4G_BASEPATH variable in resources.wrf4g. Check $HOME/WRF4G/etc/resources.wrf4g to find where $WRF4G_BASEPATH is pointing. You will see that it is pointing to $HOME/WRF4G/repository/output. Go to $HOME/WRF4G/repository/output/test/test and see the directory structure and the output files.
[user@mycomputer~]$ ls -lh $HOME/WRF4G/repository/output/test/test/output total 420K -rw-rw-r-- 1 user user 6.2K 2011-10-28 12:40 wrf24hc_d01_20110828T120000Z_20110828T120000Z.nc -rw-rw-r-- 1 user user 6.2K 2011-10-28 12:41 wrf24hc_d01_20110829T000000Z_20110829T000000Z.nc -rw-rw-r-- 1 user user 6.2K 2011-10-28 12:43 wrf24hc_d01_20110829T120000Z_20110829T120000Z.nc -rw-rw-r-- 1 user user 14K 2011-10-28 12:40 wrfout_d01_20110828T120000Z_20110828T180000Z.nc -rw-rw-r-- 1 user user 11K 2011-10-28 12:40 wrfout_d01_20110828T210000Z_20110829T000000Z.nc -rw-rw-r-- 1 user user 14K 2011-10-28 12:41 wrfout_d01_20110829T000000Z_20110829T060000Z.nc -rw-rw-r-- 1 user user 11K 2011-10-28 12:41 wrfout_d01_20110829T090000Z_20110829T120000Z.nc -rw-rw-r-- 1 user user 14K 2011-10-28 12:43 wrfout_d01_20110829T120000Z_20110829T180000Z.nc -rw-rw-r-- 1 user user 11K 2011-10-28 12:43 wrfout_d01_20110829T210000Z_20110830T000000Z.nc -rw-rw-r-- 1 user user 3.4K 2011-10-28 12:40 wrfrain_d01_20110828T190000Z_20110828T190000Z.nc -rw-rw-r-- 1 user user 3.4K 2011-10-28 12:41 wrfrain_d01_20110829T070000Z_20110829T070000Z.nc -rw-rw-r-- 1 user user 3.4K 2011-10-28 12:43 wrfrain_d01_20110829T190000Z_20110829T190000Z.nc -rw-rw-r-- 1 user user 99K 2011-10-28 12:40 wrfxtrm_d01_20110828T120000Z_20110829T000000Z.nc -rw-rw-r-- 1 user user 99K 2011-10-28 12:41 wrfxtrm_d01_20110829T000000Z_20110829T120000Z.nc -rw-rw-r-- 1 user user 99K 2011-10-28 12:43 wrfxtrm_d01_20110829T120000Z_20110830T000000Z.nc [user@localhost ~]$ tree $HOME/WRF4G/repository/output/test/test . ├── log │ ├── log_1_1.tar.gz │ ├── log_2_2.tar.gz │ └── log_3_3.tar.gz ├── namelist.input ├── output │ ├── wrfout_d01_19830825T120000Z_19830825T233000Z.nc │ ├── wrfout_d01_19830826T000000Z_19830826T000000Z.nc │ ├── wrfout_d01_19830826T000000Z_19830826T113000Z.nc │ ├── wrfout_d01_19830826T120000Z_19830826T120000Z.nc │ ├── wrfout_d01_19830826T120000Z_19830826T233000Z.nc │ ├── wrfout_d01_19830827T000000Z_19830827T000000Z.nc │ ├── wrfrain_d01_19830826T000000Z_19830826T000000Z.nc │ ├── wrfrain_d01_19830826T120000Z_19830826T120000Z.nc │ ├── wrfrain_d01_19830827T000000Z_19830827T000000Z.nc │ ├── wrfxtrm_d01_19830825T120000Z_19830825T233000Z.nc │ ├── wrfxtrm_d01_19830826T000000Z_19830826T000000Z.nc │ ├── wrfxtrm_d01_19830826T000000Z_19830826T113000Z.nc │ ├── wrfxtrm_d01_19830826T120000Z_19830826T120000Z.nc │ ├── wrfxtrm_d01_19830826T120000Z_19830826T233000Z.nc │ └── wrfxtrm_d01_19830827T000000Z_19830827T000000Z.nc ├── realout └── restart ├── wrfrst_d01_19830826T000000Z.nc ├── wrfrst_d01_19830826T120000Z.nc └── wrfrst_d01_19830827T000000Z.nc
In order to improve your knowledge about WRF4G, move on to the second part of this tutorial
