Linux x86-64

Red Hat Enterprise/CentOS Linux 6, 7, and 8

Red Hat Fedora 28, 29, and 30

Ubuntu 16.04 and 18.04

SuSE Linux Enterprise Server 12 and 15

Intel Parallel Studio XE 17-20
GNU 4.3 - 9.3
PGI Workstation 11.2 - 18.10
Oracle Studio 12

C and C++:
Clang 3 - 7

Fortran:
Absoft Pro 17 - 19

Argonne MPICH
Argonne MPICH2
GNU SLURM
HPE MPI 2
HPE MPT
Intel MPI
Open MPI
OSU MVAPICH
OSU MVAPICH2
Bullx MPI
IBM Platform MPI
Berkeley UPC (32-bit only)

Linux PowerLE / OpenPOWER

Ubuntu 14.04 - 16.04

Red Hat Enterprise Linux 7

GNU 4.3 - 9.3

Open MPI

Linux-arm64

Ubuntu 16.04

CentOS 7

GNU 4.3 - 9.3

Arm Compiler 19.0

C and C++:
Clang 3 - 7

Open MPI

Apple Macintosh

Mac OS X High Sierra (10.13)
Mac OS X Mojave (10.14)
Mac OS X Catalina (10.15)

Intel Parallel Studio XE 17-20
GNU 4.3 - 9.3

C/C++:
Apple Clang 9 - 11

Fortran:
Absoft Pro 17 - 19

Argonne MPICH
Argonne MPICH2
Open MPI