Changes between Version 7 and Version 8 of ImplementAnalysislknetf

Timestamp:

Feb 22, 2023, 1:43:01 PM (21 months ago)

Author:

lnerger

Comment:

--

ImplementAnalysislknetf

@@ -163 +163 @@
 
 Hint: 
- * The routine is similar to `init_dim_obs` used for the global filters. However, with a domain-decomposed model `m_state_f` will contain parts of the state vector from neighboring model sub-domains. To make these parts accessible, some parallel communication will be necessary (The state information for a neighboring model sub-domain, will be in the memory of the process that handles that sub-domain). The example implementation in `testsuite/dummymodel_1d` uses the function `MPI_AllGatherV` for this communication.
+ * The routine is similar to `init_dim_obs` used for the global filters. However, with a domain-decomposed model `m_state_f` will need to contain parts of the state vector from neighboring model sub-domains. Thus, one needs to collect this information which resides in the memory of other processes. PDAF provides the routine [wiki:PDAF_gather_obs_f PDAF_gather_obs_f] for this task. The example implementation in `tutorial/classical/online_2D_parallelmodel` shows the use of `PDAF_gather_obs_f`.
 
 === `U_init_obs_f` (init_obs_f_pdaf.F90) ===