AOMP Release 13.0-5

THIS IS AN OLD RELEASE. DO NOT DOWNLOAD. PLEASE DOWNLOAD THE LATEST RELEASE.

These are the release notes for AOMP_13.0-5. The source code base for this release is the upstream LLVM 11 monorepo main branch as of April 1, 2021 with hash value 0889181625bb570e463362ab8f53f9a14c886b2e. Updates from the aomp-stg-open repo were added as one commit per different file as of April 6, 2021.

This release includes a demo of a new LLVM library called libLLVMOffloadArch.cpp. The clang tool offload-arch is now built with this library. The libomptarget runtime no longer calls the binary "offload-arch -c" and traps the stdout. Instead a library call is made to libLLVMOffloadArch.cpp to determine current capabilities. The tool offload-arch is still created with the llvm build and the sources are in llvm-project/llvm/lib/OffloadArch/offload-arch . Updates were made so offload-arch returns the first VISIBLE gpu which could be the result of setting ROCM_VISIBLE_DEVICES for amdgpus.

This release starts to deprecate the use of mygpu in favor of offload-arch. A new version of mygpu calls offload-arch. The tables used to drive mygpu have been deleted. All pci-id tables for offloading identification are now in llvm library OffloadArch.

Added a new command line option -offload-usm which turns on OpenMP pragma requires unified_shared_memory and sets toolchain flags appropriately. This saves having to change every source file to turn on unified shared memory.

Build changes:
Update list of gfx names to include gfx1030 and gfx1031

Known Issues:
9 Clang lit test failures
Long build times when large numbers of archive libraries are needed because toolchain must unbundle the archive for device linking.