AMD Radeon Open Compute Framework 3.7 Released
AMD released a new version of their Radeon Open Compute framework this weekend. This is the first ROCm version with official support for Ubuntu 20.04. There is also support for OpenMP 5.0 and direct GPU-to-GPU communications in the ROCm Communications Collective Library.
written by 林慧 (Wai Lin). published 2020-08-25 - last edited 2020-08-26
Old AMD GPU not capable of being used for AMD ROCm.
Radeon Open Compute (ROCm) is a fairly complete free and open GPU compute framework from AMD similar to the proprietary, closed and totally market-dominating CUDA compute framework from graphics card market leader Nvidia.
ROCm can be used to get OpenCL 2.0 support and a lot more on select older and most newer AMD graphics cards. ROCm supports the Open Multi-Processing (OpenMP) API, Tensorflow, the MIOpen and MIOpenGEMM APIs for deep learning and quite a lot more developers will appreciate.
The OpenMP support in the custom LLVM "AOMP" build in ROCm 3.7 defaults to OpenMP 5.0 in this release. It is possible to force OpenMP 4.5 compliance with
-fopenmp-version=45. AOMP is a special LLVM build with support for GPU offloading with OpenMP, HIP, CUDA and OpenCL. The special ROCm "AOMP" LLVM build has a lot of features that are not (yet) part of the upstream LLVM distribution.
The ROCm Communications Collective Library (RCCL) shipped with ROCm 3.7 is compatible with version 2.7 of the Nvidia Communications Collective Library (NCCL) API. There is also new support for direct GPU-to-GPU send and receive operations in the RCCL library. Direct GPU-to-GPU communications using PCIe, xGMI, TCP/IP sockets and InfiniBand Verbs is supported.
The OpenCL is the most interesting part of ROCm for those of us who do not have a data-center with racks of machines with multiple graphics cards in the basement. ROCm 3.7 supports OpenCL 2.0 "Full profile".
Ubuntu 20.04 Is Now A Supported Platform
The list of GNU/Linux distributions that are "officially" supported by AMD as ROCm platforms is very short. This release adds Ubuntu 20.04 to that list of supported distributions:
- Ubuntu 20.04
- Ubuntu 18.04.4 (with kernel 5.3 or newer)
- CentOS 7.8 & RHEL 7.8 (with kernel 3.10.0-1127 or newer & using devtoolset-7 runtime support)
- CentOS 8.2 & RHEL 8.2 (with kernel 4.18.0 or newer)
- SLES 15 SP1
You can find fairly straight-forward installation instructions for the supported distributions at rocmdocs.amd.com /en/latest/Installation_Guide/Installation-Guide.html. You may also want to check the AMD ROCm Release Notes v3.7.0.