Last edited Timestamp?

Adjoint test

Principle

The adjoint test checks that the adjoint is the adjoint of the tangent using the adjoint definition. By definition, given a linear operator A going from a space E to a spece F, and scalar products <.,.>_E, and <.,.>_F in these respective spcaces, the adjoint of A is the linear operator A_ad such that for any vectors (x,y) in the suitable spaces,

<Ax,y>_F = <x,A_ad y>_E

In practice, we apply the comparison to perturbations state vectors dx and dy. We have then to compare:

<Adx,dy>_F = <dx,A_ad dy>_E

Requierements

Initialization =

discuss about:

• tangent and adjoint variables initalization
• ramdom noise generation (repeatability)

Unitary Test

discuss about:

• _tan and _adj initialization (means "why we should do _tan(nit000) vs. _adj(nitend)" for instance

Global Test

MPP test

discuss about:

• handling of domain/domain border for MPP test

Test Pass Criteria

Results

• Cluster / OSX
• Sequential / MPP
• ORCA2 / GYRE
• other