Changes between Version 38 and Version 39 of 2016WP/2016SharedActions
- Timestamp:
- 2015-11-11T16:57:59+01:00 (9 years ago)
Legend:
- Unmodified
- Added
- Removed
- Modified
-
2016WP/2016SharedActions
v38 v39 54 54 === '''AGRIF''' === 55 55 ==== ''' '''AGRIF-1 / Met Office - Increased vertical resolution with AGRIF ==== 56 ''' Motivation:''' Vertical grid refinement in NEMO would be a useful tool in simulating some aspects of the ocean (e.g. overflows) [[BR]] ''' Status: ''' Started in 2015 but much more work to do [[BR]] ''' Main Tasks: ''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' Medium [[BR]] ''' Tim Graham Depends on:''' [[BR]] ''' Principal Investigator : '''56 ''' Motivation:''' Vertical grid refinement in NEMO would be a useful tool in simulating some aspects of the ocean (e.g. overflows) [[BR]] ''' Status: ''' Started in 2015 but much more work to do [[BR]] ''' Main Tasks: ''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' Medium [[BR]]'''Depends on:''' [[BR]] ''' Principal Investigator : '''Tim Graham 57 57 58 58 ==== AGRIF-2 / CNRS - Assessment of LIM3 with AGRIF ==== 59 ==== '''Motivation:''' Enable the use of grid refinement with LIM3, since LIM3 is consolidated in NEMO and should remain the only sea-ice model in the system[[BR]]'''Status: '''Not yet started in 2015[[BR]]'''Main Tasks: '''[[BR]]'''Science Reviewer:''' [[BR]]'''System Reviewer:''' [[BR]]'''Deadline:''' [[BR]]'''Priority:''' Medium [[BR]]'''Depends on:''' [[BR]]'''Principal Investigator : '''Clément Rousset ==== 60 ==== 61 59 ==== ''' Motivation:''' Enable the use of grid refinement with LIM3, since LIM3 is consolidated in NEMO and should remain the only sea-ice model in the system[[BR]]''' Status: '''Not yet started in 2015 [[BR]]''' Main Tasks: '''[[BR]]''' Science Reviewer:''' [[BR]]''' System Reviewer:''' [[BR]]''' Deadline:''' [[BR]]''' Priority:''' Medium [[BR]]''' Depends on:''' [[BR]]''' Principal Investigator : ''' Clement Rousset ==== 60 ==== ==== 62 61 ==== AGRIF-3 / Mercator Océan - Agrif + vvl (two way nesting) ==== 63 ''' Motivation:''' Enable the use of agrif with temporally varying vertical grid (e.g. with zstar or ztilde coordinates) [[BR]] ''' Status: ''' Started in 2015. One way nesting is ok, two way nesting needs to be finalized. [[BR]] ''' Main Tasks: ''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' High [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator :'''Jérôme Chanut62 ''' Motivation:''' Enable the use of agrif with temporally varying vertical grid (e.g. with zstar or ztilde coordinates) [[BR]] ''' Status: ''' Started in 2015. One way nesting is ok, two way nesting needs to be finalized. [[BR]] ''' Main Tasks: ''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' High [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator :''' Jérôme Chanut 64 63 65 64 === '''HPC''' === … … 70 69 ''' Motivation:''' Grouping communications (lbc_lnk) together is more efficient than several separate lbc_lnk calls. [[BR]] 71 70 72 ''' Status: ''' lbc_lnk_multi in 3.6 [[BR]] ''' Main Tasks: ''' Extend functionality of lbc_lnk_multi to 3D (or 4D variables). Find calls to lbc_lnk that can be replaced with lbc_lnk_multi. [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : '''Miguel Castrillo71 ''' Status: ''' lbc_lnk_multi in 3.6 [[BR]] ''' Main Tasks: ''' Extend functionality of lbc_lnk_multi to 3D (or 4D variables). Find calls to lbc_lnk that can be replaced with lbc_lnk_multi. [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Miguel Castrillo 73 72 74 73 ==== ''' '''HPC-3 / Barcelona - Suppress useless communications ==== 75 74 ''' Motivation:''' Suppress unnecessary calls to lbc_lnk. 76 75 77 [[BR]] ''' Status: ''' [[BR]] ''' Main Tasks: ''' Use a script to search for and test impact of removing lbc_lnk calls from the model code. Determine whether communications used for diagnostic purposes can be suppressed. [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : '''Tim Graham76 [[BR]] ''' Status: ''' [[BR]] ''' Main Tasks: ''' Use a script to search for and test impact of removing lbc_lnk calls from the model code. Determine whether communications used for diagnostic purposes can be suppressed. [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Tim Graham 78 77 79 78 ==== ''' '''HPC-4 / CMCC - Scalability with MPI-OPENMP ==== 80 79 ''' Motivation:''' Improving NEMO scalability. 81 80 82 [[BR]] ''' Status: ''' continuation of 2015 dev CMCC-1 [[BR]] ''' Main Tasks: ''' 1. the activity started at the end of 2013 with the analysis of three OpenMP approaches (implemented using “mini-apps”) on several multicore architectures; the second step was the implementation of the hybrid version of the GYRE configuration using the best OpenMP approach. Results in terms of scalability were not so good. Thus, the porting and the analysis of the hybrid version (using “mini-apps”) on many core architectures (e.g. Xeon Phi) is needed, before extending the hybrid OpenMP/MPI approach to the entire code, in order to justify the effort of the development. This analysis is carrying out in 2015. The extension of the hybrid implementation on the entire code will depend on the results of this analysis. 2. analysis of scalability improvement using MPI3 new communications (e.g. collective neighbours communications), instead of point to point communications [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' HIGH [[BR]] ''' Depends on:''' results of the same action in 2015 [[BR]] ''' Principal Investigator : '''Silvia Mocavero81 [[BR]] ''' Status: ''' continuation of 2015 dev CMCC-1 [[BR]] ''' Main Tasks: ''' 1. the activity started at the end of 2013 with the analysis of three OpenMP approaches (implemented using “mini-apps”) on several multicore architectures; the second step was the implementation of the hybrid version of the GYRE configuration using the best OpenMP approach. Results in terms of scalability were not so good. Thus, the porting and the analysis of the hybrid version (using “mini-apps”) on many core architectures (e.g. Xeon Phi) is needed, before extending the hybrid OpenMP/MPI approach to the entire code, in order to justify the effort of the development. This analysis is carrying out in 2015. The extension of the hybrid implementation on the entire code will depend on the results of this analysis. 2. analysis of scalability improvement using MPI3 new communications (e.g. collective neighbours communications), instead of point to point communications [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' HIGH [[BR]] ''' Depends on:''' results of the same action in 2015 [[BR]] ''' Principal Investigator : ''' Silvia Mocavero 83 82 84 83 ==== ''' '''HPC-5 / NERC - Implement larger haloes ==== 85 84 ''' Motivation:''' Improving NEMO scalability. 86 85 87 [[BR]] ''' Status: ''' New implementation - old idea [[BR]] ''' Main Tasks: ''' Investigate the benefits of using larger halo to reduce the communication frequency and hence improve performance and scalability. This is likely to be most influential in the barotropic time-splitting where it should be possible to emulate earlier solutions for the iterative solvers. Extension to the rest of the code will be considered subject to an impact assessment. [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' HIGH [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : '''Andrew Coward86 [[BR]] ''' Status: ''' New implementation - old idea [[BR]] ''' Main Tasks: ''' Investigate the benefits of using larger halo to reduce the communication frequency and hence improve performance and scalability. This is likely to be most influential in the barotropic time-splitting where it should be possible to emulate earlier solutions for the iterative solvers. Extension to the rest of the code will be considered subject to an impact assessment. [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' HIGH [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Andrew Coward 88 87 89 88 === === 90 89 === '''System Simplification''' === 91 ==== SIMPLIF-1 / CNRS - Simplification of vertical diffusion 92 '''Motivation:''' 90 ==== SIMPLIF-1 / CNRS - Simplification of vertical diffusion ==== 91 '''Motivation:''' Introduce a vertical physics manager that allows to save MPP communications 93 92 94 ''' Status: ''' Already started[[BR]]'''Main Tasks: ''' [[BR]]'''Science Reviewer:''' [[BR]]'''System Reviewer:''' [[BR]]'''Deadline:''' [[BR]]'''Priority:''' High[[BR]]'''Depends on:''' [[BR]]'''Principal Investigator : '''Gurvan Madec93 ''' Status: ''' Already started[[BR]] ''' Main Tasks: ''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' High[[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Gurvan Madec 95 94 96 95 === '''Configuration Manager''' === … … 132 131 133 132 === '''ROBUSTNESS''' === 134 ==== ''' '''ROBUSTNESS-1 / CNRS - Integration of the SEABASS configuration as a test case 133 ==== ''' '''ROBUSTNESS-1 / CNRS - Integration of the SEABASS configuration as a test case ==== 135 134 ''' Motivation: '''SEABASS is the reference configuration for Data Assimilation, included in the NEMO v3.4_STABLE version. Various data assimilation experiments have been done with this configuration, with various data assimilation systems (e.g. Cosme et al, 2011, Bouttier et al. 2014, Yin et al., 2014). In this context, this configuration appears to be useful for data assimilation users, to couple their own DA system on NEMO and compare their results with thgose obtained on this configuration. SEABASS is also easy to take in hand. Also, it allows to update the configuration status to the future version of NEMO. For these reasons, this configuration is a relevant test case for Data Assimilation. [[BR]] ''' Status: ''' [[BR]] ''' Main Tasks: ''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator: '''Pierre-Antoine Bouttier 136 135
