Changes between Version 64 and Version 65 of 2016WP/2016SharedActions

Timestamp:

2016-01-07T12:52:22+01:00 (8 years ago)

Author:

timgraham

Comment:

--

2016WP/2016SharedActions

@@ -94 +94 @@
   '''                                              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
 
-==== ''' '''HPC-3 / Barcelona - Suppress useless communications ====
-'''                Motivation:''' Suppress unnecessary calls to lbc_lnk.
-
-  [[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
+==== ''' '''HPC-3 / Met Office - Suppress useless communications ====
+'''                Motivation:''' Suppress unnecessary halo updates (calls to lbc_lnk) as these are expensive and are a barrier to increased parallelisation of NEMO.
+
+  [[BR]]                                          '''                                              Status: '''                                          [[BR]]                                          '''                                             Main Tasks: ''' 
+   * Use a script to search for lbc_lnk calls in the model code.
+   * Combine with SETTE testing to see if they can be safely removed
+   * Discussions with ST to determine whether communications used for diagnostic purposes can be suppressed. As described in the HPC working group document above this would mean that haloes could no longer be output in NEMO output files.              [[BR]]                                          '''                                              Science Reviewer:'''                                                                                      [[BR]]                                                                                      '''                                              System Reviewer:'''                                                                                      [[BR]]                                                                                      '''                                              Deadline:''' October 2016                                             [[BR]]                                                                                      '''                                              Priority:''' High                                             [[BR]]                                                                                      '''                                              Depends on:'''                                                                                      [[BR]]                                                                                      '''                                              Principal Investigator : '''                             Tim Graham
 
 ==== ''' '''HPC-4 / CMCC - Scalability with MPI-OPENMP ====