Changes between Version 59 and Version 60 of 2016WP/2016SharedActions
- Timestamp:
- 2016-01-05T12:36:43+01:00 (8 years ago)
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2016WP/2016SharedActions
v59 v60 65 65 === '''AGRIF''' === 66 66 ==== ''' '''AGRIF-1 / Met Office - Increased vertical resolution with AGRIF ==== 67 ''' 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 Graham67 ''' 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 68 68 69 69 ==== ==== … … 71 71 ==== ==== 72 72 ==== AGRIF-2 / CNRS - Assessment of LIM3 with AGRIF ==== 73 ''' Motivation:''' enable the use of AGRIF with LIM3 since LIM3 is the reference sea ice model in NEMO and LIM2 will soon be removed[[BR]] ''' Status: ''' Not yet started in 2015 [[BR]] ''' Main Tasks: ''' AGRIF already works with LIM2, so the strategy here will be to adapt what is done in LIM2 to LIM3. [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline: ''' end of 2016 [[BR]] ''' Priority:''' High [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator :'''Clément Rousset73 ''' Motivation:''' enable the use of AGRIF with LIM3 since LIM3 is the reference sea ice model in NEMO and LIM2 will soon be removed[[BR]] ''' Status: ''' Not yet started in 2015 [[BR]] ''' Main Tasks: ''' AGRIF already works with LIM2, so the strategy here will be to adapt what is done in LIM2 to LIM3. [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline: ''' end of 2016 [[BR]] ''' Priority:''' High [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator :''' Clément Rousset 74 74 75 75 === === 76 76 ==== AGRIF-3 / Mercator Océan - Agrif + vvl (two way nesting) ==== 77 ''' 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 Chanut77 ''' 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 78 78 79 79 === === … … 86 86 * implementation of the solution. 87 87 88 89 90 ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' June 2016[[BR]] ''' Priority:''' HIGH[[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Silvia Mocavero/Tim Graham 88 ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' June 2016[[BR]] ''' Priority:''' HIGH[[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Silvia Mocavero/Tim Graham 91 89 92 90 ==== ''' '''HPC-2 / Barcelona - Gather communications ==== 93 91 ''' Motivation:''' Grouping communications (lbc_lnk) together is more efficient than several separate lbc_lnk calls. [[BR]] 94 92 95 ''' 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 Castrillo93 ''' 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 96 94 97 95 ==== ''' '''HPC-3 / Barcelona - Suppress useless communications ==== 98 96 ''' Motivation:''' Suppress unnecessary calls to lbc_lnk. 99 97 100 [[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 Graham98 [[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 101 99 102 100 ==== ''' '''HPC-4 / CMCC - Scalability with MPI-OPENMP ==== 103 101 ''' Motivation:''' Improving NEMO scalability. 104 102 105 [[BR]] ''' Status: ''' continuation of 2015 dev CMCC-1 [[BR]] ''' Main Tasks:'''106 103 '''Status: ''' continuation of 2015 dev CMCC-1 [[BR]]'''Main Tasks:''' 104 * 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. Some improvements to the implementation have been performed by Intel to match Intel architectures. During 2016, the extension of the hybrid implementation to the entire code is planned 107 105 * analysis of scalability improvement using MPI3 new communications (e.g. collective neighbours communications), instead of point to point communications 108 106 109 110 111 '''Science Reviewer:''' Prof Giovanni Aloisio (University of Salento & CMCC)[[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' December 2016[[BR]] ''' Priority:''' HIGH [[BR]] ''' Depends on:''' results of the same action in 2015 [[BR]] ''' Principal Investigator : ''' Silvia Mocavero 107 ''' Science Reviewer:''' Prof. Giovanni Aloisio (University of Salento & CMCC)[[BR]]''' System Reviewer:''' [[BR]]''' Deadline:''' December 2016[[BR]]''' Priority:''' HIGH [[BR]]''' Depends on:''' results of the same action in 2015[[BR]]''' Principal Investigator : '''Silvia Mocavero 112 108 113 109 ==== ''' '''HPC-5 / NERC - Implement larger haloes ==== 114 110 ''' Motivation:''' Improving NEMO scalability. 115 111 116 [[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 Coward112 [[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 117 113 118 114 === === … … 121 117 '''Motivation:''' Introduce a vertical physics manager that allows to save MPP communications 122 118 123 ''' Status: ''' Already started[[BR]] ''' Main Tasks: ''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' High[[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : '''Gurvan Madec119 ''' 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 124 120 125 121 ==== SIMPLIF-2 / CNRS - Simplification of configurations, introduction of user-defined module ==== … … 184 180 ''' Motivation: ''' Following investigative work by Nicolas Ducousso it became clear that the EEN scheme in NEMO did not perform as expected in idealised test cases. Although a fix was implemented that improved the performance in idealised test cases the performance in realistic simulations (e.g. ORCA025) is worse. It is not clear that the new or old formulation is correct for the case of sloping bathymetry and partial steps. 185 181 186 [[BR]] ''' Status: ''' [[BR]] ''' Main Tasks: ''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:'''[[BR]]182 [[BR]] ''' Status: ''' [[BR]] ''' Main Tasks: ''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] 187 183 188 184 '''ROBUSTNESS-3 / CNRS - Academic test cases in the system'''
