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= ORCHIDEE performance (trunk revision 3623) =

In order to test Orchidee performance several decisions have been done. Check the details below:

* Trunk
* Revision 3623
* In Curie
* Production mode
  * XIOS
  * IOIPSL
  * Orchidee
* Real CPU Time
* XIOS library

Note: the total cpu time can be calculated by multiplying with the numbers of MPI used. 

== Table 1: Orchidee Scalability ==
Following table shows: 

* Simulation length: 1Y
* FG2.CWRR configuration
* Output level
  * monthly
  * daily output
* MPI parallelization
  * e.g: 64 Cores Simulation = 1 XIOS core + 63 Orchidee cores
* Forcing resolution vs number of cores

Note: no server is used for 1 MPI case

=== XIOS (no restart) ===

XIOS only writes the history outputs files.

out_orchidee_00XX/orchid_XXXXX.o

||           || 1 MPI || 4 MPI || 8 MPI || 16 MPI || 32 MPI || 64 MPI || 128 MPI ||
||twodeg     || || 1732/32m18 || 812/17m1 || 409/10m23 || 240/7m33 || 165/6m12  || 142/6m30 ||
||onedeg     || || Mem limit || 2734/57m || 1334/33m40 || 710/23m07 || 436/18m32 || 398/17m50 ||
||halfdeg    || || Mem limit || Running || Running || 2490/1h25 || 1404/1h05 || 1251/1h02 ||

Folder output size : 

* 2 deg: 2.6GB
* 1 deg: 10GB
* 0.5 deg: 30 GB

=== IOIPSL (no restart) ===

Only IOIPSL enabled.

||           || 1 MPI || 4 MPI || 8 MPI || 16 MPI || 32 MPI || 64 MPI || 128 MPI ||
||twodeg     ||       ||       ||       ||        ||        ||        ||         ||
||onedeg     ||       ||       ||       ||        ||        ||        ||         ||
||halfdeg    ||       ||       ||       ||        ||        ||        ||         ||



== Table 2: Orchidee XIOS scalability (IO)  ==
In this table the set up FG2.CWRR is used with 63MPI for orchidee_ol and 1MPI for the server XIOS. For the case with IOIPSL, then 64MPI are used for orchidee_ol.
The first line describes different levels of output. 

||           || yearly [[BR]]with XIOS  || monthly [[BR]]with XIOS || monthly and daily [[BR]]with XIOS || daily and 3hour [[BR]]with XIOS  || daily and 3hour [[BR]]with IOIPSL ||
||twodeg     ||      ||           ||            ||            ||            ||
||onedeg     ||      ||           ||            ||            ||            ||
||halfdeg    ||      ||           ||            ||            ||            ||

=== FG2.CWRR ===
Description of the test case... to come