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2017WP/ENHANCE-05_Gurvan-RK3 – NEMO
wiki:2017WP/ENHANCE-05_Gurvan-RK3

Version 7 (modified by gm, 7 years ago) (diff)

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ENHANCE-5_Gurvan — RK-3 time stepping

Summary

Action ENHANCE-5_Gurvan — RK-3 time stepping
PI(S) Gurvan Madec

Digest

Introduce an optional RK3 time-stepping scheme. The scheme will:

  1. be a valuable alternative to the current Modified Leap-Frog (MLF, Leclair and Madec OM2009) scheme,
  2. prepare the futur introduction of a compensated time-space scheme,
  3. allow ​AGRIF to be exactly conservative, and
  4. make much more easier to use time coarsening of TRC and OFF-line variable volume calculation

In practice the work is to :

  • add all time varying fields as argument of all DYN and TRA routines (as RK3 schemes uses the same tendency terms as the Leap-Frog scheme, but it calls them several times by time step)
  • introduce a stpRK3.F90 time-stepping module (which will contain a stp_RK3 routine)
  • move the existing Modified Leap-Frog time stepping (step.F90) in stpMLF.F90 module (containing stp routine renamed stp_MLF)
  • change the CALL to stp routine in memogcm.F90 by a CALL to either stp_MLF or stp_RK3 depending of namelist parameters
Dependencies no
Target 2017 merge party
Trac Ticket #1911
SVN branch dev_r7881_ENHANCE09_RK3
Previewer(s) Names
Reviewer(s) Names
Status To be developed
Link ExtractUrl(.)?

Abstract

This section should be completed before starting to develop the code, in order to find agreement on the method beforehand.

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No macro or processor named 'TracForm' found

Once the PI has completed this section, he should send a mail to the previewer(s) asking them to preview the work within two weeks.

Preview

Since the preview step must be completed before the PI starts the coding, the previewer(s) answers are expected to be completed within the two weeks after the PI has sent his request.
For each question, an iterative process should take place between PI and previewer(s) in order to reach a "YES" answer for each of the following questions.

Error: Failed to load processor TracForm
No macro or processor named 'TracForm' found

Once all "YES" have been reached, the PI can start the development into his development branch.

Tests

Once the development is done, the PI should complete this section below and ask the reviewers to start their review in the lower section.

Error: Failed to load processor TracForm
No macro or processor named 'TracForm' found

Review

A successful review is needed to schedule the merge of this development into the future NEMO release during next Merge Party (usually in November).

Error: Failed to load processor TracForm
No macro or processor named 'TracForm' found

Once review is successful, the development must be scheduled for merge during next Merge Party Meeting.