Question for the Developper committee

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Strategic questions

• transition from a vector optimised code with reasonable mpp performances to a mpp optimised code with reasonable vector performances. Agreement ?

• switch to dynamical allocation Agreement ?

• vvl case as the default option : introduction of a key_linssh for linear free surface (=constant volume) Agreement ?

• embedded sea ice default. Levitating case as namelist option or suppression of levitating case Agreement ?

• Off Line priority ?

• Separation between the initialisation and the time-stepping phase: call of the xxx_yyy_init routine at the initialisation phase, not as today at the first call of step. Needed for the adjoint

• How do we manage open boundaries condition : BDY and OBC, suppression of OBC?, merge of the two?

Open questions

• How to manage sea-ice in mpp : introduce another domain decomposition for sea-ice? How is it done in CICE?

• surf module en stand Alone? both to have stand alone bulk and stand alone sea-ice model.

• unequal i-j partition?

• time splitting at high latitudes to save ~20-30% of a global high resolution configuration?

• space averaged output for very high resolution configurations?

• Update the Equation of State with a faster and accurate one ? Priority?

• Non-boussinesq version of the code ? Need, priority??

• Inclusion of academic test cases (Kelvin, soliton ...)? Need, priority??

• Inclusion of timing for mpp? Need, priority??

• Introduce nstock as a list rather than a frequency ? Need, priority??

• Introduce MPI_TYPES from PRACE? Need, priority??