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_class='hudson.plugins.git.GitChangeSet'><affectedPath>mixing_length.F90</affectedPath><affectedPath>saturation.F90</affectedPath><affectedPath>advance_clubb_core_module.F90</affectedPath><affectedPath>model_flags.F90</affectedPath><commitId>38b63ff28ea145707d4ee1d9469013ee20b1697b</commitId><timestamp>1674081416000</timestamp><author><absoluteUrl>http://carson.math.uwm.edu/jenkins/user/noreply</absoluteUrl><fullName>noreply</fullName></author><authorEmail>noreply@github.com</authorEmail><comment>Restructuring and Porting of Compute_mixing_length subroutine(Phase 2) (#1054)

* Restructuring and Porting of Compute_mixing_length subroutine(Phase 2)

Restructure: sat_mixrat_liq_2D_acc is being directly called instead of
calling the 1D version inside the column loop. Changing sat_mixrat_liq_2D_acc
to a subroutine from a function and adding output array, start_index as
additional argument. This is a workaround for passing sub-arrays. The OpenACC
doen't like the sub-arrays being passed and fails the validation.

Porting: OpenACC directives are added inside sat_mixrat_liq_2D_acc for porting

Validation: Answers are Bit for Bit with arm-multicolumn case + nvhpc compiler

* Fix for compilation issues

Issue 1: Missed out declaring 'start_index' while intergrating the
change

Issue 2: The use of error_code module and the procedures inside it
causes OpenACC compilation issues when run on the device.

* Removing the sat_mixrat_liq_acc and sat_mixrat_liq_2D_acc, making the normal sat_mixrat_liq work for all current use cases, and making the other versions of sat_mixrat_liq (bolton,gfdl,lookup) functional with OPENACC.

Co-authored-by: huebler &lt;huebler@uwm.edu&gt;
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</comment><date>2023-01-19 12:36:21 -0600</date><id>9f86ec344fcdd14a084c6249520c33815e225c24</id><msg>Breaking up column loop in mono_flux_limiter. This may not be the final form for GPUization, but it's definitely a start, no longer do we have to copy single column variables to multicolumn ones anywhere. (#1051)</msg><path><editType>edit</editType><file>mono_flux_limiter.F90</file></path></item><item _class='hudson.plugins.git.GitChangeSet'><affectedPath>penta_lu_solver.F90</affectedPath><affectedPath>model_flags.F90</affectedPath><affectedPath>matrix_solver_wrapper.F90</affectedPath><affectedPath>tridiag_lu_solver.F90</affectedPath><affectedPath>lapack_wrap.F90</affectedPath><commitId>a5ae081b3485ebbd6b470a1bf077eaf8ba2a2979</commitId><timestamp>1674153404000</timestamp><author><absoluteUrl>http://carson.math.uwm.edu/jenkins/user/noreply</absoluteUrl><fullName>noreply</fullName></author><authorEmail>noreply@github.com</authorEmail><comment>Adding tridiag_lu solver (#1056)

* Adding tridiag_lu solver

* Changing low to lower in tridiag_lu and penta_lu, also fixing up some spacing.

* Making variables that represent matrix solutions more consistently named.
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* Restructuring and Porting of Compute_mixing_length subroutine(Phase 1)

Restructure: The compute_mixing_length is one of the top most routine taking 35-50%
of the total time in a single timestep. The subroutine has been restructured to
push the i-loop further down to extract vectorization and parallelization.
The restructuring also involves introduction of sat_mixrat_liq_acc routines to
extract parallelism when called inside a OpenACC parallel region.

Porting: OpenACC directives are inserted to port the restructured compute_mixing_length
code on to the GPUs. This port is currently unoptimized and there is still room for improvement.

NOTE: Currently, l_sat_mixrat_lookup = false and saturation_formula = saturation_flatau
(Earthworks config options) case is supported on OpenACC build. Any other options works
on CPUs as usual. OpenACC declare create directives are inserted in model_flags and
constants_clubb, as these module variables are used inside the saturation routines.

* Added debug message about only supporting
l_sat_mixrat_lookup = false and saturation_formula = saturation_flatau
 on GPUs
Answers are Bit for Bit with arm-multicolumn case + nvhpc compiler.

* Changing CLUBB debug level 1 to 0 for the saturation formula support
running on GPUs

* Changing indentation to make gfortran happy, it wants ifdefs to start at the beginning of the line.

* Adding use statements for error checks and printouts, also making the errors set err_code to clubb_fatal_error.

Co-authored-by: huebler &lt;huebler@uwm.edu&gt;
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