Changes between Version 8 and Version 9 of Doc/Config/IPSLCM5A2


Ignore:
Timestamp:
09/20/16 17:13:26 (8 years ago)
Author:
aclsce
Comment:

--

Legend:

Unmodified
Added
Removed
Modified

  • Doc/Config/IPSLCM5A2

    v8 v9  
    1111# IPSL-CM5A2 model # 
    1212 
    13 '''IPSL-CM5A2''' is an ''' IPSL coupled climate model''' including atmosphere, land, ocean, sea ice and carbon cycle. The goal of this model is to reproduce IPSLCM5A-LR version, with reduced computing times to allow to run long simulations (i.e thousands of years) within reasonnable time. Main caracteritics of this model are '''ORCA2-LIM2-PISCES x LMD 96x95x39''', old LMDZ physics, ORCHIDEE with Choisnel hydrology (2 layers). This model uses both recent component versions and recent technical developments (hybrid parallelization MPI-OpenMP, XIOS 2.0 as input-output library, OASIS3-MCT parallel coupler) that allow to reach '''56 simulated years per day''' on about 300 Curie computing cores. This model is available on Ada (IDRIS) and Curie (TGCC) supercomputers and benefits from last developments of libIGCM runnning environment. 
     13'''IPSL-CM5A2''' is an ''' IPSL coupled climate model''' including atmosphere, land, ocean, sea ice and carbon cycle. The goal of this model is to reproduce IPSLCM5A-LR version, with reduced computing times to allow to run long simulations (i.e thousands of years) within reasonnable time. Main caracteritics of this model are '''ORCA2-LIM2-PISCES x LMD 96x95x39''', old LMDZ physics, ORCHIDEE with Choisnel hydrology (2 layers). This model uses both recent component versions and recent technical developments (hybrid parallelization MPI-OpenMP, XIOS 2.0 as input-output library, OASIS3-MCT parallel coupler) that allow to reach '''56 simulated years per day''' on about 300 Curie (TGCC) or Ada (IDRIS) computing cores. This model is available on Ada (IDRIS) and Curie (TGCC) supercomputers and benefits from last developments of libIGCM runnning environment. 
    1414 
    1515IPSL-CM5A2 model includes : 
    … …  
    2020 * tools : 
    2121  * '''OASIS3-MCT''' as parallel coupler ; 
    22   * '''XIOS''' as I/O library ;  
     22  * '''XIOS 2.0''' as I/O library ;  
    2323  * '''libIGCM''' as running environment (scripts) to run the model and to perform post processing ; 
    2424 
    … …  
    7878 
    7979### Restart files ### 
    80 Default IPSL-CM5A2 configuration starts from VLRtun01 simulation at the date of 3599-12-31. The monitoring of this simulation is available here :  http://esgf.extra.cea.fr/thredds/fileServer/work/p25sepul/IPSLCM6/DEVT/piControl/VLRtun01/MONITORING/index.html 
     80Default IPSL-CM5A2 configuration starts from '''VLRtun01''' simulation at the date of '''3599-12-31'''. The monitoring of this simulation is available here :  http://esgf.extra.cea.fr/thredds/fileServer/work/p25sepul/IPSLCM6/DEVT/piControl/VLRtun01/MONITORING/index.html 
    8181 
    8282### Output level ### 
    83 By default, only '''monthly outputs''' and '''low output levels''' are activated. 
     83By default, '''low output levels''' are activated : monthly and daily outputs for atmospheric component, monthly and/or yearly outputs for other components. Remind that you have to think of the output you need before launching a long simulation. 
    8484 
    8585### Lengths, frequencies  ### 
    … …  
    104104### Computing centres ### 
    105105 
    106 #### TGCC Bull Curie thin nodes #### 
    107  
    108 The basic configuration (default configuration) runs on Curie TGCC machine and uses 302 computing cores : 1 process for XIOS, 45 processes for NEMO, and 32 MPI processes and 8 OpenMP thread for LMDZ. This configuration allows you to run 56 simulated years per day. In order to use less computing ressources, it is possible to run on 160 cores (38 simulated years per day) as follows : 1 process for XIOS, 31 processes for NEMO, and 32 MPI processes and 4 OpenMP thread for LMDZ. To do that, you have to : 
     106The basic configuration (default configuration) runs on Curie TGCC and Ada IDRIS machine and uses 302 computing cores : 1 process for XIOS, 45 processes for NEMO, and 32 MPI processes and 8 OpenMP thread for LMDZ. This configuration allows you to run 56 simulated years per day. In order to use less computing ressources, it is possible to run on 160 cores (38 simulated years per day) as follows : 1 process for XIOS, 31 processes for NEMO, and 32 MPI processes and 4 OpenMP thread for LMDZ. To do that, you have to : 
    109107 * Modify config.card as follows : 
    110108{{{ 
    … …  
    136134 
    137135 
    138 Because of load-balancing (difference between ocean computing time and atmosphere computing time), not all configurations (in terms of number of process/threads) are efficient.  
     136Because of load-balancing (difference between ocean computing time and atmosphere computing time), not all of the configurations (in terms of number of process/threads) are efficient.  
    139137If you want to run a configuration with less cores, ask Arnaud Caubel what would be the optimum configuration.  
    140138 
    141 #### IDRIS IBM Ada #### 
     139#### IDRIS Ada features #### 
    142140 
    143141The basic configuration (default configuration) runs on Ada (IDRIS). In order to use efficiently computing ressources, you have to use Intel environment. To do that you have to :