Changes between Version 1 and Version 2 of 2020WP/HPC-04_mcastril_Mixed_Precision_implementation
- Timestamp:
- 2020-01-07T14:54:28+01:00 (4 years ago)
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2020WP/HPC-04_mcastril_Mixed_Precision_implementation
v1 v2 11 11 == Summary 12 12 13 ||=Action || Name and subject of the action||14 ||=PI(S) || Names||15 ||=Digest || Brief description with motivations and main tasks||16 ||=Dependencies || If any||13 ||=Action || HPC-04_mcastril_Mixed_Precision_implementation || 14 ||=PI(S) || Miguel Castrillo, Oriol Tintó || 15 ||=Digest || To implement mixed precision in NEMO OCE || 16 ||=Dependencies || WP 2008 HPC-13_Mixed_precision_study-13.1_Assessment (completed) || 17 17 ||=Branch || source:/NEMO/branches/{YEAR}/dev_r{REV}_{ACTION_NAME} || 18 18 ||=Previewer(s) || Names || … … 22 22 === Description 23 23 24 {{{#!box width=25em help 25 Describe the goal of development and the methodology, \\ 26 add reference documents or publications if relevant. 27 }}} 24 This action is a follow up from HPC-08_Mixed_precision in 2018 WP. It was linked to two tickets (#2039 and #2040), that were respectively devoted to the assessment and implementation of Mixed Precision in NEMO. After the evaluation stage has been completed (together with the preparation of the necessary tools to do the mentioned assessment and the implementation), this year will be time for the implementation. 28 25 29 ''...'' 26 Oriol Tintó (oriol.tinto@bsc.es) is the Principal Investigator for the whole task. ECMWF is a collaborator for this phase and will have a principal role on the validation in coupled simulations. 30 27 31 28 === Implementation 32 29 33 {{{#!box width=35em help 34 Describe flow chart of the changes in the code. \\ 35 List the Fortran modules and subroutines to be created/edited/deleted. \\ 36 Detailed list of new variables to be defined (including namelists), \\ 37 give for each the chosen name and description wrt coding rules. 38 }}} 30 a) BSC developing a prototype based on NEMO 4.0.1; Further testing done at ECMWF with this version. 39 31 40 ''...'' 32 b) Provide demonstrator for NEMO ST (how? => Scientific Publication, Branch in NEMO rep.) (BSC) 33 34 c) Prepare tools for automation to make sure that all the workflow that goes from identifying sensitive variables to a final implementation can be reapplied to any version of the code. (BSC, April 2020) 35 36 d) Provide a mixed-precision branch at the NEMO SVN starting after the merging party. (BSC, April 2020) 37 38 e) Provide scientific evaluation and progress idealised test cases motivated by single precision evaluation and beyond (throughout 2020) (ECMWF); (Discussion on intercomparison test cases at Commodore Workshop, January 2020). 39 40 f) By end 2020, ECMWF anticipates to have a working version of NEMO + SI3 in mixed precision for DA, medium-range and extended-range ocean prediction in forced and coupled mode. Potential changes will be included into the Mixed-precision branch. (ECMWF+BSC task). 41 41 42 42 === Documentation updates 43 44 {{{#!box width=55em help45 Using previous parts, define the main changes to be done in the NEMO literature46 (manuals, guide, web pages, …).47 }}}48 43 49 44 ''...'' … … 51 46 == Preview 52 47 53 {{{#!box width=50em info54 [[Include(wiki:Developers/DevProcess#preview_)]]55 }}}56 48 57 49 ''...'' … … 59 51 == Tests 60 52 61 {{{#!box width=50em info62 [[Include(wiki:Developers/DevProcess#tests)]]63 }}}64 65 53 ''...'' 66 54 67 55 == Review 68 56 69 {{{#!box width=50em info70 [[Include(wiki:Developers/DevProcess#review)]]71 }}}72 73 57 ''...''