Enable GPU execution of MPAS-Atmosphere of pre-acoustic step setup calculations #1222
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Ensures that lines of code within a loop or conditional are apparent to the reader. This change only affects whitespace to indent code within an if-condition.
…h OpenACC Ensure that the invariant fields that are used in this work routine are present on the device from model startup to model shutdown. Fields are added to the device with copyin directives and other code within mpas_atm_dynamics_init and fields are deleted from the device with matching delete directives and code in mpas_atm_dynamics_finalize.
Add directives for an initial port of this routine using OpenACC.
Ensure that other, non-invariant, fields are available on the device during this routine and that modified variables are copied out at the end. Timing for these transfers are reported in the output log file in the new timer: `atm_recover_smlstep_pert_variables [ACC_data_xfer]`. The 'default(present)' clause is added to the parallel directive so that any missing data causes a runtime error.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
The GPU calculation of the vertical wind speed (
wfield) that is used during the acoustics steps is enabled by adding OpenACC directives to theatm_set_smlstep_pert_variables_workroutine.Timing information for the OpenACC data transfers in this routine is captured in the log file by a new timer:
atm_set_smlstep_pert_variables [ACC_data_xfer].Invariant fields used in this routine are also copied to the device within
mpas_atm_dynamics_initand are deleted inmpas_atm_dynamics_finalize.