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MPI communicator generalizations #1277
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@@ -282,7 +282,7 @@ | |
}, | ||
{ | ||
"name": "NL2", | ||
"build_files": ["w3snl2md.F90", "mod_xnl4v5.f90", "serv_xnl4v5.f90", "mod_fileio.f90", "mod_constants.f90"], | ||
"build_files": ["w3snl2md.F90", "mod_xnl4v5.f90", "serv_xnl4v5.f90", "mod_fileio.f90", "mod_constants.f90", "mod_mpicomm.f90"], | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I do not see a file mod_mpicomm.f90. Also I think mpicomm.F90 should be adde with the MPI switch not NL2. There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I can revert this change, I was initially confused about whether mod files were separately needed |
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"conflicts": ["OMPG", "OMPH"] | ||
}, | ||
{ | ||
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!> @file | ||
!> @brief Defines MPI communicator id as constants for global use. | ||
!> | ||
!> @author H. L. Tolman @date 05-Jun-2018 | ||
!> | ||
#include "w3macros.h" | ||
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!> | ||
!> @brief Define some mpi constants for global use | ||
!> | ||
!> @author J. M. Sexton @date 19-Jul-2024 | ||
!> | ||
! | ||
! | ||
!/ ------------------------------------------------------------------- / | ||
MODULE MPICOMM | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. This is a fairly lightweight routine, should we add this to an existing file such as constants? There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I'm not sure what the ramifications would be here, I'll consult with one of my collaborators who'd originally suggested having it as a separate file. I believe the intent was to make it more portable and obviously defined. Would w3parall.F90 be appropriate? I do see that There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I can move things to another location if that's your preference. When you know, can you point me to where specifically so that I can push an update? There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. w3parall is mostly for unstructured grids, where as this is for all grids, so I think constants might be a better choice. Others can weigh in on this thought too. There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Thanks for the explanation, and I'm also interested in others thoughts 🙂 I was originally looking at w3parall because the SYNCHRONIZE_GLOBAL_ARRAY has been useful in our coupling tests so far, although I do see now that the header for this file indicates it's "Parallel routines for implicit solver" |
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!/ | ||
!/ +-----------------------------------+ | ||
!/ | WAVEWATCH III NOAA/NCEP | | ||
!/ | H. L. Tolman | | ||
!/ | FORTRAN 90 | | ||
!/ | Last update : 19-Jul-2024 | | ||
!/ +-----------------------------------+ | ||
!/ | ||
!/ 19-Jul-2024 : Add MPI SubCommunicator variable ( version 7.xx ) | ||
!/ | ||
!/ Copyright 2009-2024 National Weather Service (NWS), | ||
!/ National Oceanic and Atmospheric Administration. All rights | ||
!/ reserved. WAVEWATCH III is a trademark of the NWS. | ||
!/ No unauthorized use without permission. | ||
!/ | ||
! 1. Purpose : | ||
! | ||
! Define some mpi constants for global use | ||
! | ||
! 2. Variables and types : | ||
! | ||
! Name Type Scope Description | ||
! ---------------------------------------------------------------- | ||
! MPI_COMM_WW3 Int Global Value for mpi (sub)communicator for WW3 | ||
! IS_EXTERNAL_COMPONENT Bool Global General logical similar to IS_ESMF_COMPONENT | ||
! ---------------------------------------------------------------- | ||
!/ ------------------------------------------------------------------- / | ||
!/ | ||
! | ||
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INTEGER :: MPI_COMM_WW3=0 !< MPI_COMM_WW3 | ||
! | ||
! Parameters in support of running as ESMF component | ||
! | ||
! --- Flag indicating whether or not the model has been invoked as an | ||
! external Component. This flag is set to true in the external | ||
! module during initialization. | ||
LOGICAL :: IS_EXTERNAL_COMPONENT = .FALSE. !< IS_EXTERNAL_COMPONENT Flag for model invoked via external executable. | ||
! | ||
CONTAINS | ||
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!/ | ||
!/ End of module MPICOMM ------------------------------------------- / | ||
!/ | ||
END MODULE MPICOMM |
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It's unclear to me if this should only be included if you have the MPI switch and therefore be added in model/src/cmake/switches.json instead.
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I did try to include ifdefs to make mpicomm.F90 not affect anything if it was compiled without MPI, but I can try to change this to model/src/cmake/switches.json since that sounds cleaner (I will wait on this fix for further clarity on whether a separate module is needed)