AOMP Release 0.7-0

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

This release is a major update from 0.6-5. The source code base for this release is the clang/llvm 9.0 development trunk as of July 15, 2019. These are the other changes included in this release.

• The package now installs in /usr/lib/aomp_0.7-X with symbolic link from /usr/lib/aomp.
• Uses build of rocm-device-libs exactly from rocm 2.6 source files.
• New untested infrastructure to eventually support fortran with flang
• Moved to the new llvm-project repository. This is the new monorepo that eliminates need for clang, llvm, lld, and openmp repositories.
• no longer build for nvptx backend, removed cuda examples
• moved utils to aomp-extras repository
• moved custom libraries from rocm-device-libs to aomp-device-libs
• hcc now build with rocm 2.6 hcc is not in the package because we only use it to build the hip runtime.
• roct and rocr are now build from rocm 2.6 sources
• comgr is now build from the rocm 2.6 sources.
• fixes for a number of new test cases

AOMP Release 0.6-5

Like 0.6-4, this release 0.6-5 of aomp is based off the stable version of clang/llvm 8.0.
These are the changes found in 0.6-5 compared to the previous 0.6-4 release.

• Added support for archives of bundles on command line.
• Created hostcall payload on system memory instead of GPU memory. This avoids cache effects of HBM memory that gets flushed only at kernel boundaries.
• Cleaned up examples.
• Readability changes to various README files in docs.
• Added SLES-15-SP1 source install dependencies and important notes for linux support.
• Emit struct of per kernel attributes.
• Detect and warn that a target exit data clause fails, rather than abort.
• Fixed linking issue when archive files contain no BC files.

AOMP Release 0.6-4

Like 0.6-3, this release 0.6-4 of aomp is based off the stable version of clang/llvm 8.0.

These are the changes found in 0.6-4 compared to the previous 0.6-3 release.

• support for building on SLES15 SP1
• rpm package for SLES15 SP1
• do not create a host thread for GPU hostcall services if no services are used by any kernel in the application. This fixes a performance regression we saw with openmpapps in 0.6-3 because none of those apps currently use printf on the device. This still needs more study.
• Reorganized the github README and linked pages to make it less confusing and to ready support for more platforms.
• removed hip wrapper scripts such as hipcc. Users must compile hip with clang++ as demonstrated in the examples to get openmp support with hip.
• properly set amdgpu-flat-work-group-size for generic mode: add wave_size
• add -lelf to link step of libomptarget.rtl.hsa.so
• more gracefully exit when gpu arch of kernel does not match device arch
• refine LIBPOMPTARGET_KERNEL_TRACE 1=>minimal, 2=>verbos'er

AOMP Release 0.6-3

Like 0.6-2, this release is based off the stable version of clang/llvm 8.0.

These changes are from 0.6-2.

• New support for synchronous services called hostcall.
• The source to support hostcall can be found in a new repository called aomp-extras in the hostcall directory
• There are minor changes to atmi to support hostcall. These are in branch atmi-0.5-063.
• Removed printf end-of-kernel service and added to hostcall. printf is now much more reliable from the gpu.
• Enhancements to toolchain to support static device libraries
• fix to correctly pickup math functions from libm-.bc . Previously it was seeing math functions as builtins.
• Suppress calls to __kmpc_push_target_count for host code, resolves undefined reference.
• Allow -frtti flag to be honored if user requests it on command line.
• Add AOMP/include path before /usr/local/include to pick up correct header for omp.h.
• Generate Metadata for both SPMD and Generic offload targets.
• Honor OMP_TEAM_LIMIT for work groups, just like OMP_NUM_TEAMS.
• Added *_wg_size symbol to reflect compile time known thread limit for a kernel.
• Added support to openmp runtimes to support 1024 threads per team/work group.
• Reenabled SILoadStoreOptimizer pass after pulling upstream fix for scalar carry corruption.
• Fixed amdgcn noinline and alwaysinline incompatibility issue for the Parallel Data Sharing Wrapper

AOMP Release 0.6-2

This release uses the release_80 stable release of clang/llvm/lld/openmp repositories. The artifacts for this release include the patches to the release_80 repos to support openmp for amdgcn for release 0.6-2

Here are the fixes for 0.6-2

• Fixed issue with constant size teams and threads.
• Moved to the stable clang/llvm 8.0 code base
• Fixed code in deviceRTLs/amdgcn that set Max_Warp_Number to 16, was 64
• Enable Float16 for 0.6-2, disabled by default in release_80 merge
• Disable META data opt, and provide evar AMDGPU_ENABLE_META_OPT_BUG to enable
• Add archive handling for bc linking.
• For performance, rewrite select_outline_wrapper calls, to be direct calls.
  Example: change the generated from:
  @_HASHW_DeclareSharedMemory_cpp__omp_outlined___wrapper =
  local_unnamed_addr addrspace(4) constant i64 -4874776124079246075
  call void @select_outline_wrapper(i16 0, i32 %6, i64 -4874776124079246075)
  to:
  call void @DeclareSharedMemory_cpp__omp_outlined___wrapper(i16 0, i32 %6)
• In release_80, Loop_tripcount API is now used, so we need to limit num_groups/teams
  to no more than Max_Teams, fixes assertok_error, and snap4
  Also handle num_teams clause inside loop_tripcount logic.
• BALLOT_SYNC macro replaced with ACTIVEMASK in release_80

AOMP Release 0.6-1

Changes from 0.6-0 to 0.6-1:

• Disabled SILoadStoreOptimizer pass to work around 64 bit address calculation issue

• Added 6 new device APIs as extentions to OpenMP device apis

  • omp_ext_get_warp_id
  • omp_ext_get_lane_id
  • omp_ext_get_master_thread_id
  • omp_ext_get_smid
  • omp_ext_is_spmd_mode
  • omp_ext_get_active_threads_mask

• rtl get_launch_vals added, algorithm rewrite for threads, teams computation

  • Throttle code for teams and threads off by default, enabled with THREAD_TEAM_THROTTLE

• Added support for an LLC and OPT specific env-var AOMP_LLC_ARGS AOMP_OPT_ARGS

  • Allows adding compiler options to opt and llc via env-var, useful for triage, dumps, and debug.

• Added clang-unbundle-archive tool.

• Added support for device library archives in clang when using -l flag.

• Updated llvm-link to work with archives of .bc components

• Added new method AddStaticDeviceLibs to CommonArgs.cpp that searches for static device
  libraries using -l and -L command line options in a way similar to the search method used for
  host libraries including which directories to search for. The differences from host search are:

  • Searches look for names that specify the architecture and/or GPU
  • Searches look in the libdevice subdirectory of each host directory path
  • Searches look for filenames with .a suffix before searching for .bc suffix

• Cleanup of aomp build scripts including split of llvm component into llvm, clang, and lld.

• Fix where llvm-config is found during build

• Added installed binaries from llvm to help with clang lit testing

• New build script for comgr. This is not part of the compiler build yet. Developers and those building from source can run build_comgr.sh

• Do not build hip runtime for ppc and arm builds.

• Added two new smoke tests and improved automation of smoke tests

• Corrected mymcpu and mygpu for vega20

AOMP Release 0.6-0

This is the initial release of AOMP.

AOMP is the new name for HCC2. The last HCC2 release was HCC2 0.5-4.
Changes from HCC2 0.5-4

• AOMP is built from sources for ROCm 2.1.
• AOMP can build for Nvidia cards so install of CUDA 10 SDK is required.
• AOMP needs to build hcc for proper build of hip.

Two of the openmpapps are known to fail. We are working to fix this in 0.6-1.

If you built aomp from source, it will default install into $HOME/rocm/aomp. This package will install into /opt/rocm/aomp. Many of the samples will look first in $HOME/rocm/aomp. To override this,

export AOMP=/opt/rocm/aomp