Changes between Version 38 and Version 39 of Doc/CheckDebug

Timestamp:

05/20/19 10:31:43 (5 years ago)

Author:

omamce

Comment:

--

Doc/CheckDebug

@@ -490 +490 @@
 }}}
  * Submit `create_se.job` in batch mode
+
+# Optimization with Lucia #
+
+IPSLCM coupled model runs three executables (atmospehre, ocean and IO server) that use three separate sets of computing cores. The number of cores attributed to each one should be choose such as the execution times of each executable are as close as possible, to reduce the waiting time.
+
+LUCIA is a tool implemented in OASIS that measure execution and waiting times of each executable, and helps to tune the number of execution cores for each model.
+
+## LUCIA documentation ##
+http://www.cerfacs.fr/oa4web/papers_oasis/lucia_documentation.pdf
+
+## Using LUCIA ##
+
+First install and run a coupled model. Then performs some modifications.
+
+### Get a version of OASIS with LUCIA ###
+
+{{{
+cd modipsl : mv oasis-mct oasis-mct_orig
+cp -rf /ccc/cont003/home/igcmg/igcmg/Tools/oasis3-mct_lucia oasis3-mct
+cd config/IPSLCM6 ; gmake clean ; gmake
+}}}
+
+### Update DRIVER/oasis.driver (example for Irene) ###
+
+{{{
+Index: oasis.driver
+===================================================================
+--- oasis.driver        (revision 3545)
++++ oasis.driver        (working copy)
+@@ -117,6 +117,7 @@
+     #   To be changed
+     #   On Curie
+     #   /ccc/scratch/cont003/dsm/p86caub/LUCIA/lucia
++     /ccc/cont003/home/igcmg/igcmg/Tools/irene/lucia/lucia
+     #   On Ada
+     #   /linkhome/rech/psl/rpsl035/LUCIA/lucia
+     fi
+}}}
+
+### Update COMP/oasis.card ###
+
+{{{
+Index: oasis.card
+===================================================================
+--- oasis.card  (revision 3545)
++++ oasis.card  (working copy)
+@@ -4,7 +4,7 @@
+[UserChoices]
+OutputMode=n
+FreqCoupling=5400
+-Lucia=n
++Lucia=y
+}}}
+
+### Run the model ###
+
+#### Script_Output will contains some additionnal information ####
+{{{
+  Component -           Computation -       Waiting time (s) - done on tstep nb
+
+  LMDZ          1385.77 ( +/-   6.69 )            7.58 ( +/- 6.14 )  362
+  oceanx        1319.37 ( +/-  18.68 )           85.41 ( +/- 18.70 )  362
+  xios.x           0.00 ( +/-   0.00 )            0.00 ( +/- 0.00 )    0
+
+  New analysis
+
+  Component -         Calculations   -     Waiting time (s) - done on tstep nb:
+
+  LMDZ                     1379.55                  6.45       362
+  oceanx                   1300.79                 85.21     362
+  xios.x                      0.00 0.00            0
+}}}
+
+
+### LUCIA will also procuce a graphic that you will find in : ###
+
+{{{
+IGCM_OUT/${TagName}/${SpaceName}/${ExperimentName}/${JobName}/CPL/Debug/${JobName}_*******_oasis_balance.eps
+}}}
+