CMCC-NEMO - 2016 actions

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members

Name	Institution	%	Position
Dorotea Iovino	CMCC	40	NEMO Officer
Stefania Ciliberti	CMCC	20	Scientist
Tomas Lovato	CMCC	20	Scientist
Silvia Mocavero	CMCC	20	Scientist
Andrea Storto	CMCC	0	Scientist

Summary: List here the actions NOT listed in SHARED ACTIONS

Action	Brief description	Status	Branch name	Trac ticket n°	Wiki page name	Reviewer(s)	Review status

Summary of SHARED ACTIONS (listed here for continuity)

Action	Brief description	Status	Branch name	Trac ticket n°	Wiki page name	Reviewer(s)	Review status	Shared Action Stream
CMCC-1	Scalability with MPI-OPENMP
CMCC-2	Suppress Global Comms (mpp_sum etc)
CMCC-3	BDY for nested limited area models
CMCC-4	BDY tool developpement and tests

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CMCC-1 - Scalability with MPI-OPENMP TITLE

Motivation: Improve NEMO scalability.
Status : continuation of 2015 dev CMCC-1
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
Science Reviewer:
System Reviewer:
Deadline:
Priority: HIGH
Depends on: results of the same action in 2015
Principal Investigator : S. Mocavero (silvia.mocavero@…)

CMCC-3 - BDY for nested limited area models

Motivation: Improving nesting techniques for regional and sub-regional circulation models nested into coarser models [BR]] Status :
Main tasks : 1. Implementation of the generalised Flather’s condition for the barotropic component (Oddo & Pinardi, 2008); 2. Interpolation Constraint applied to total velocity field for preserving the transport conservation across open boundaries
Science Reviewer: Prof. N. Pinardi (University of Bologna
System Reviewer:
Deadline:
Priority:
Depends on:
Principal Investigator : Stefania Ciliberti (stefania.ciliberti@…)