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@pvelesko pvelesko released this 25 Sep 16:43
· 48 commits to main since this release
v1.2
814e8f3
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Release Notes

This release brings significant stability and performance improvements, enhanced support for CUDA, new HIP/ROCm library ports and integrations for HipBLAS, HipFFT, HipRAND/RocRAND. Initial testing of running HIP/CUDA applications on RISC-V.

Tested Platforms

  • Intel, AMD CPUs via Intel Compute Runtime
  • Intel GPUs via Neo i915 driver
  • ARM Mali GPUs (Quartz64 SBC)
  • RISC-V (Starfive Visionfive 2 SBC Debian, experimental)
  • AMD GPUs via rusticl(exploratory work)

Notable Changes

  • Introduced cucc, a drop-in replacement for nvcc:

    • Added cucc, enabling direct compilation of CUDA sources.
    • Added nvcc softlink, allowing you to compile CUDA sources without making any changes.
    • Adjusted CUDA headers to improve compatibility with CUDA sources, including a dummy cublas_v2.h header to prevent conflicts with system headers.

  • Enhanced OpenCL backend:

    • Support for cl_ext_buffer_device_address extension:
      • Added support for devices featuring the cl_ext_buffer_device_address extension, improving memory management capabilities.
    • Optimized queue profiling:
      • The OpenCL backend now uses non-profiling queues by default and switches to profiling queues only when needed, resulting in performance improvements.
    • Various other performance optimizations

  • Fixed Level Zero backend issues:

    • Addressed out-of-memory (OOM) errors:
      • Fixed memory leaks and improved resource management to prevent OOM errors during heavy workloads.
    • Improved thread safety:
      • Implemented mutexes and synchronization mechanisms to enhance thread safety within the Level Zero backend.

  • Rebased to HIP 6.x and updated hip-tests:

    • Updated the codebase to be compatible with HIP 6.x.

Library Support Changes

  • Expanded HIP library support:
    • HipBLAS integration:
      • Introduced the CHIP_BUILD_HIPBLAS option to enable building HipBLAS.
    • HipFFT integration:
      • Introduced the CHIP_BUILD_HIPFFT option to enable building HipFFT.
    • RocRAND port:
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