Changes between Version 43 and Version 44 of Doc/Intro/News


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Timestamp:
03/13/24 16:34:17 (3 months ago)
Author:
falletti
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  • Doc/Intro/News

    v43 v44  
    1919Before you start, please take note of the following points: 
    2020 - you will need to update your personal environments, the compiling and execution environments in the running workflow and in some cases the model codes. For that, you will find here  
    21 https://forge.ipsl.jussieu.fr/igcmg_doc/wiki/Doc/ComputingCenters/TGCC/IreneRedHat8 a documentation listing all the modifications and corrections to be done into your working configurations  
     21https://forge.ipsl.fr/igcmg_doc/wiki/Doc/ComputingCenters/TGCC/IreneRedHat8 a documentation listing all the modifications and corrections to be done into your working configurations  
    2222so that they can work on the new redhat8 environment. 
    2323- we randomly encounter crashes on some simulations launched on the Irene SKL machine. In this case, the model does not advance any more, the Job leaves in time-limit and the current period  
    … …  
    265265 
    266266If you want to checkout a mod.def with all informations on old versions, you can use the 3 following command lines:  
    267 svn co -r 5879 http://forge.ipsl.jussieu.fr/igcmg/svn/modipsl/trunk/util/ --depth empty 
     267svn co -r 5879 http://forge.ipsl.fr/igcmg/svn/modipsl/trunk/util/ --depth empty 
    268268cd util 
    269269svn up mod.def 
    270270 
    271271or you can extract all modipsl architecture with the version of mod.def containing old revisions: 
    272 svn co -r 5879 http://forge.ipsl.jussieu.fr/igcmg/svn/modipsl/trunk modipsl  
     272svn co -r 5879 http://forge.ipsl.fr/igcmg/svn/modipsl/trunk modipsl  
    273273}}} 
    274274 
    … …  
    279279The IPSL-CMC running environment for calculation and post-treatment has now been adapted for use at Irene-amd the new supercomputer at TGCC. Current list of maintained configurations can now be used at Jean-Zay. 
    280280 
    281 The main information related to the use of Irene-amd can be found in the documentation https://forge.ipsl.jussieu.fr/igcmg_doc/wiki/Doc/ComputingCenters/TGCC/IreneAmd. You have first to set up working environment as indicated in the documentation. Note that front-end machines are specific to irene-skl and irene-amd and the connexion method are different. Beware to separate model sources compiled on irene-skl and irene-amd because executables are note compatibles. 
    282  
    283 A technical control quality have been performed on the IPSLCM6.1.11-LR and IPSLCM6.2_work configurations. A scientific validation has been done on the coupled experiences piControl during 50 years and scenario with the configuration IPSLCM6.1.11. See information about these tests here: https://forge.ipsl.jussieu.fr/igcmg/wiki/Calculateurs/IreneAmd#Validation. 
     281The main information related to the use of Irene-amd can be found in the documentation https://forge.ipsl.fr/igcmg_doc/wiki/Doc/ComputingCenters/TGCC/IreneAmd. You have first to set up working environment as indicated in the documentation. Note that front-end machines are specific to irene-skl and irene-amd and the connexion method are different. Beware to separate model sources compiled on irene-skl and irene-amd because executables are note compatibles. 
     282 
     283A technical control quality have been performed on the IPSLCM6.1.11-LR and IPSLCM6.2_work configurations. A scientific validation has been done on the coupled experiences piControl during 50 years and scenario with the configuration IPSLCM6.1.11. See information about these tests here: https://forge.ipsl.fr/igcmg/wiki/Calculateurs/IreneAmd#Validation. 
    284284We encourage you strongly to also validate personally the configuration you use.  
    285285 
    286 The way to use this new supercomputer is very close to Irene-skl machine concerning filesystems, use of modules, compilers as well as method to submit computing jobs. Nevertheless, we draw your attention to the architecture of AMD Rome processor (128 cores per node, 2 Gb per core) that is different from Irene-skl : computing performances are better on Irene-skl, by comparing core to core. See some performances tests here : https://forge.ipsl.jussieu.fr/igcmg/wiki/Calculateurs/IreneAmd#Performances. It is possible to improve computing performances by increasing the number of cores used per process as well as dedicating nodes to perform IOs.The users guide of theses functionailties is available here : https://forge.ipsl.jussieu.fr/igcmg_doc/wiki/Doc/ComputingCenters/TGCC/IreneAmd#Useofspecificoptionstoincreasecomputingperformances. Beware the use of these functionalities should increase the hour-consumption of yuo run, that's why their use must be validated by the person in charge of your configuration. 
    287  
    288 Note for CMIP6 simulations to be run on this machine : you have to modify the config.card as indicated here : https://forge.ipsl.jussieu.fr/igcmg/wiki/IPSLCM6/IPSL-CM6A-LR#IPSL-CM6A-LR. 
     286The way to use this new supercomputer is very close to Irene-skl machine concerning filesystems, use of modules, compilers as well as method to submit computing jobs. Nevertheless, we draw your attention to the architecture of AMD Rome processor (128 cores per node, 2 Gb per core) that is different from Irene-skl : computing performances are better on Irene-skl, by comparing core to core. See some performances tests here : https://forge.ipsl.fr/igcmg/wiki/Calculateurs/IreneAmd#Performances. It is possible to improve computing performances by increasing the number of cores used per process as well as dedicating nodes to perform IOs.The users guide of theses functionailties is available here : https://forge.ipsl.fr/igcmg_doc/wiki/Doc/ComputingCenters/TGCC/IreneAmd#Useofspecificoptionstoincreasecomputingperformances. Beware the use of these functionalities should increase the hour-consumption of yuo run, that's why their use must be validated by the person in charge of your configuration. 
     287 
     288Note for CMIP6 simulations to be run on this machine : you have to modify the config.card as indicated here : https://forge.ipsl.fr/igcmg/wiki/IPSLCM6/IPSL-CM6A-LR#IPSL-CM6A-LR. 
    289289 
    290290If you have any questions, don't hesitate to send them to the list "platform-users@listes.ipsl.fr" so that more people can learn from the answers. You can also answer questions from your colleges at this list.