Regression Test Policy for Weather Model Platforms and Compilers

The regression test policy for the UFS weather model follows the general principles outlined in the Regression Test Policy for UFS Platforms and Compilers and the specific principles outlined in the Regression Test Policy for Medium-Range Weather App Platforms and Compilers. The details for the UFS weather model are outlined below.

Tier-1 platforms

Platform	Responsibility for tests	Test coverage	Status
NOAA WCOSS Dell P3 with default Intel 18 software stack	EMC	EMC-PROD tests (rt.conf)	Implemented
NOAA WCOSS Cray with default Intel 18 software stack	EMC	EMC-PROD tests (rt.conf)	Implemented
NOAA RDHPC Hera with default Intel 18 software stack	EMC	EMC-PROD tests (rt.conf)	Implemented
NOAA RDHPC Hera with GNU 9.1.0 software stack	EMC	EMC-PROD tests (rt_gnu.conf)	Implemented
NOAA RDHPC Gaea with default Intel18 software stack	EMC/DTC	EMC-PROD tests (rt.conf)	Implemented
NOAA RDHPC Jet with default Intel 18 software stack	EMC	EMC-PROD tests (rt.conf)	Implemented
MSU Orion with default Intel 18 software stack	EMC	EMC-PROD tests (rt.conf)	Implemented
NCAR CISL Cheyenne with Intel19/SGI MPI software stack	EMC/DTC	EMC-PROD tests (rt.conf)	Implemented
NCAR CISL Cheyenne with GNU 9.1.0/SGI MPI software stack	EMC/DTC	EMC-PROD tests (rt_gnu.conf)	Implemented
AWS with docker container using GNU 9.3.0 software stack	EMC	EMC-PROD tests (rt_gnu.conf)	Implemented

Tier-2 platforms

Platform	Responsibility for tests	Test coverage	Status
Linux platforms with GNU 9.1.0 compiler and MPICH 3.3.1 MPI library (cloud platforms?)	TBD	TBD	Implemented
Linux platforms with Intel 19 compiler and MVAPICH2 2.3.2 MPI library (cloud platforms?)	TBD	TBD	Implemented
macOS platforms with LLVM clang 9.x.y + GNU gfortran 9.m.n compiler and mpich 3.r.s MPI library	TBD	TBD	Implemented
macOS platforms with GNU gcc+gfortran 9.x.y and mpich 3.r.s MPI library	TBD	TBD	Implemented

Tier-3 platforms

• Linux platforms with other combinations and/or other versions of the Intel or GNU compiler and MPI libraries than listed above.
• NAG compiler.
• clang/flang compiler: currently an open source development, the flang compiler is designed as a Fortran front-end for the LLVM clang compiler and may provide an interesting alternative in the future if/once matured (see this link for more information)