Changeset 3852 for trunk/LMDZ.MARS/changelog.txt

Timestamp:

Jul 16, 2025, 4:10:15 PM (3 weeks ago)

Author:

jmauxion

Message:

Mars PCM:
Improve the omp_chunk computation to fix a MPI request error arising for some combinations of llm/omp_size:

• Make sure that the omp_chunk is not too large so that the last thread do nothing.
• Check and raise a warning if the chunk is so small that the loop distribution require a second cycle over the threads (which is not optimum).

JM

File:

• trunk/LMDZ.MARS/changelog.txt (modified) (1 diff)

trunk/LMDZ.MARS/changelog.txt

@@ -4913 +4913 @@
 == 15/07/2025 == JBC
 Simplification and generalization of the "display_netcdf.py" script which can now handle more cases of shapes/dimensions in the variables + using 'pcolormesh' instead of 'imshow' to better stick to the original data.
+
+== 16/07/2025 == JM
+Improve the omp_chunk computation to fix a MPI request error arising for some combinations of llm/omp_size:
+- Make sure that the omp_chunk is not too large so that the last thread do nothing.
+- Check and raise a warning if the chunk is so small that the loop distribution require a second cycle over the threads (which is not optimum).
+