All notable changes to this project will be documented in this file.
- Use cl::sycl::id parameters instead of cl::sycl::item.
- Pre-building of kernels in SYCL version to ensure compatibility with SYCL 1.2.1. Pre-building kernels is also not required, and shows no overhead as the first iteration is not timed.
- OpenACC flags to build for Power 9, Volta, Skylake and KNL.
- Kokkos list CLI argument shows some information about which device will be used.
- OpenMP GNU compiler now uses native target flag.
- Support CSV output for Triad only running mode.
- NEC and PGI compiler option for OpenMP version.
- Option to calculate memory bandwidth in base 2 (MiB/s) rather than base 10 (MB/s).
- Update SYCL implementation to SYCL 1.2.1 interface.
- Output formatting of Kokkos implementation.
- Capitalisation of Kokkos filenames.
- Updated HIP implementation to new interface.
- Use parallel loop instead of kernels for OpenACC.
- OpenMP build for XL compiler uses
-qarch=auto.
- Superfluous OpenMP 4.5 map(to:) clauses on kernel target regions.
- Kokkos namespace not used by default so the API is easier to spot.
- Manual specification of Kokkos layout (DEVICE) as the Kokkos library sets this by default.
- Kokkos now compiles and links separately to fix complication with Kokkos 2.05.00.
- Kokkos can now instantiate single and double precision.
- OpenMP 4.5 map and reduction clause order to ensure reduction result copied back.
- Potential race condition in SYCL code between unloading OpenCL library and device list deconstructor.
- Add runtime option to run just the Triad kernel.
- Add runtime option for CSV output of results.
- ROCm HC implementation added for AMD GPUs.
- Renamed project to BabelStream (from GPU-STREAM).
- Update SYCL Makefile to use ComputeCpp path variables.
- SYCL exceptions are now fatal, and are propagated to a runtime exception.
- Build instructions for RAJA and Kokkos libraries.
- Use RAJA and Kokkos internal iterator types instead of int.
- Ensure RAJA pointers do not alias.
- Align memory to 2MB pages in RAJA and OpenMP.
- Updated Intel compiler flags for OpenMP, Kokkos and RAJA to ensure streaming stores.
- CUDA Makefile now uses variables to set compiler and flags.
- Use static shared memory for dot kernel in CUDA and HIP.
- Fix initialisation of b array bug in Kokkos implementation.
- Dot kernel HIP implementation.
- Build system overhauled from CMake to a series of Makefiles.
- Android build instructions.
- New Dot kernel added to the 4 standard kernels.
- All model implementations now initialise and allocate their own arrays rather than copying from a master copy. This allows for better performance on NUMA architectures.
- Version string definition moved from header to main file.
- Combined OpenMP 3 and 4.5 implementations.
- OpenMP 4.5 target implementation uses alloc instead of to.
- Made SYCL indexing consistent.
- Update SYCL CMake build to use ComputeCpp CE 0.1.1.
- OpenMP deconstructor now only frees GPU memory only on GPU build.
- SYCL template specializations for float and double.
- New HIP version added.
- Results for v2.0 added.
- Output of OpenCL kernel build log on failure.
- Use globally defined scalar value.
- Change scalar value to stop overflow.
- Restructure results directory.
- Change SYCL default work-group size.
- CMake defaults to Release build.
- CUDA device name output string corrected.
- Out of tree builds.
- Implementations in OpenMP 4.5 OpenACC, RAJA, Kokkos and SYCL.
- Copyright headers to source files.
- Runtime option variables are printed out.
- Device selection added to OpenCL and CUDA.
- Major refactor to include multiple programming models. The change now uses C++ for driver code, with different models plugged in as classes which implement the STREAM kernels.
- Starting values in the arrays to reduce floating point errors with high iteration counts.
- Default array size now 2^25.
- Default to 100 iterations instead of 10.
- CUDA thread block size set via define rather than hardcoded value.
- Require CUDA 7 for C++11 support.
- OpenCL C++ header updated.
- Various CMake build fixes.
- Require at least 2 iterations.
- Warning message for single precision iterations.
- HIP implementation and results.
- Titan X and Fury X results.
- Output of array sizes and other information at runtime.
- Ability to set CUDA block sizes on command line.
- Android build instructions.
- Update OpenCL C++ header.
- Requires CUDA 6.5 or above.
- OpenCL uses Kernel Functor APIs instead of make_kernel API.
- Unsigned integer warnings.
Initial public release of OpenCL and CUDA GPU-STREAM.