From dart-users at mailman.ucar.edu Mon Jul 25 13:31:37 2022 From: dart-users at mailman.ucar.edu (Data Assimilation Research Testbed users) Date: Mon, 25 Jul 2022 13:31:37 -0600 Subject: [Dart-users] Performance improvement made in DART v10.0.3 Message-ID: In the release of DART (v10.0.3) recently made available: - Redundant caching in the get_close_obs_cached and get_close_state_cached subroutines in DART/assimilation_code/modules/assimilation/assim_tools_mod.f90 has been removed. The reason for this change is to make DART run faster, particularly for large model states. How does this affect DART users: 1. For large states with few co-located observations, the runtime of filter is greatly reduced, by up to a factor of 3. 2. Smaller states will still have a very similar runtime. 3. This does not affect the execution of DART otherwise. For more details on this change see https://github.com/NCAR/DART/issues/364 and https://github.com/NCAR/DART/pull/368 Note: there is a more current release (v10.0.4) that incorporates a few small bug-fixes, including one that pertains to this code. See https://github.com/NCAR/DART/releases/tag/v10.0.4 for more details. Please email dart at ucar.edu with any questions or problems. The DAReS team. -------------- next part -------------- An HTML attachment was scrubbed... URL: