Some correction for the exchange.

[MathieuDutSik]

Pull Request Summary

The exchange mechanism is replaced which leads to avoiding creating an intermediate array
and so a decrease of memory expense.

Description

The PDLIB_exchange2Dreal is replaced by PDLIB_exchange2Dreal_zero.

Issue(s) addressed

The previous exchange forces the creation of an intermediate array which is of large size because
it is about VA. The PR decreases memory expenses and is thus a progress.

Commit Message

Reduce memory usage of PDLIB_exchange in wminiomd.F90

Check list

• Branch is up to date with the authoritative repository (NOAA-EMC) develop branch.
• Checked the checklist for a developer submitting to develop.
• If a version number update is required, checked the updating version number checklist.
• If a new feature was added, a regression test for testing the new feature is added.

Testing

• How were these changes tested?
• Are the changes covered by regression tests? (If not, why? Do new tests need to be added?)
• Have the matrix regression tests been run (if yes, please note HPC and compiler)?
• Please indicate the expected changes in the regression test output, (Note the list of known non-identical tests.)
• Please provide the summary output of matrix.comp (matrix.Diff.txt, matrixCompFull.txt and matrixCompSummary.txt):

[JessicaMeixner-NOAA]

@MathieuDutSik thanks for the PR! I'm running regtests for another PR right now, and then will start regtests for this PR. I'll keep you up to date if any issues are encountered.

[JessicaMeixner-NOAA]

matrixDiff.txt
matrixCompFull.txt
matrixCompSummary.txt

Only expected non-identical cases:

**********************************************************************
********************* non-identical cases ****************************
**********************************************************************
mww3_test_03/./work_PR1_MPI_e                     (1 files differ)
mww3_test_03/./work_PR2_UNO_MPI_d2                     (18 files differ)
mww3_test_03/./work_PR3_UQ_MPI_d2                     (18 files differ)
mww3_test_03/./work_PR3_UQ_MPI_e                     (1 files differ)
mww3_test_03/./work_PR1_MPI_d2                     (18 files differ)
mww3_test_03/./work_PR2_UQ_MPI_d2                     (13 files differ)
mww3_test_03/./work_PR3_UQ_MPI_e_c                     (1 files differ)
mww3_test_03/./work_PR3_UNO_MPI_e_c                     (1 files differ)
mww3_test_03/./work_PR3_UNO_MPI_d2                     (18 files differ)
mww3_test_03/./work_PR2_UNO_MPI_e                     (1 files differ)
mww3_test_03/./work_PR3_UQ_MPI_d2_c                     (15 files differ)
mww3_test_03/./work_PR3_UNO_MPI_d2_c                     (17 files differ)
ww3_ta1/./work_UPD0F_U                     (0 files differ)
ww3_tp2.10/./work_MPI_OMPH                     (7 files differ)
ww3_tp2.16/./work_MPI_OMPH                     (4 files differ)
ww3_tp2.17/./work_mb                     (1 files differ)
ww3_tp2.17/./work_b                     (1 files differ)
ww3_tp2.17/./work_mc                     (1 files differ)
ww3_tp2.17/./work_a                     (1 files differ)
ww3_tp2.17/./work_c                     (1 files differ)
ww3_tp2.17/./work_ma                     (1 files differ)
ww3_tp2.17/./work_mc1                     (1 files differ)
ww3_tp2.17/./work_ma1                     (1 files differ)
ww3_ufs1.3/./work_a                     (1 files differ)