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  * SCALE by Spectral Compute
  * [ ] What's new? What's new? Table of contents
      + Release 1.2.0 (2024-11-27)
          o Library Enhancements
          o PTX
          o Other
      + Release 1.1.0 (2024-10-31)
          o Library Enhancements
          o PTX
          o Thirdparty Project demos
      + Release 1.0.2.0 (2024-09-05)
          o Library Enhancements
          o Compiler Enhancements
          o New CUDA APIs
              # Math APIs
      + Release 1.0.1.0 (2024-07-24)
          o CUDA APIs
          o Compiler
          o Other
      + Release 1.0.0.0 (2024-07-15)
  * [ ] Getting Started Getting Started
      + Install SCALE
      + Compile CUDA with SCALE
      + Comparison to other solutions
      + [ ] Examples Examples
          o SCALE Example Programs
          o Basic example
          o PTX example
          o BLAS example
  * [ ] Diving deeper Diving deeper
      + Troubleshooting
      + Compute Capability Mapping
      + CUDA Dialects
      + Differences from NVIDIA CUDA
      + API Extensions
      + [ ] Compiler Compiler
          o Inline PTX support
          o Compiler warnings
          o Language Extensions
      + [ ] Implemented APIs Implemented APIs
          o Introduction to implemented APIs
          o Driver API
          o Math API
          o Runtime API
  * [ ] Contact Us Contact Us
      + Report a Bug
  * [ ] Legal Legal
      + Free Edition License
      + Third party software

Table of contents

  * Release 1.2.0 (2024-11-27)
      + Library Enhancements
      + PTX
      + Other
  * Release 1.1.0 (2024-10-31)
      + Library Enhancements
      + PTX
      + Thirdparty Project demos
  * Release 1.0.2.0 (2024-09-05)
      + Library Enhancements
      + Compiler Enhancements
      + New CUDA APIs
          o Math APIs
  * Release 1.0.1.0 (2024-07-24)
      + CUDA APIs
      + Compiler
      + Other
  * Release 1.0.0.0 (2024-07-15)

What's new?#

Release 1.2.0 (2024-11-27)#

Library Enhancements#

  * Support for gfx900 architecture.
  * Support for gfx1102 architecture.

PTX#

  * Improved handling of wave64 in inline PTX.
  * Various inline PTX compilation fixes.

Other#

  * Support for Ubuntu 24.04.
  * Upgraded to ROCm 6.2.2.

Release 1.1.0 (2024-10-31)#

Library Enhancements#

  * Added much of the CUDA graph API.
  * Improvements to multi-GPU handling.
  * Fixed rare shutdown-time segfaults.
  * Added many random API functions. As usual, see The diff.

PTX#

  * f16x2, u16x2 and s16x2 types.
  * fns instruction
  * Fixed miscompile of sad instruction.

Thirdparty Project demos#

The scale-validation repo now has working demos for the following
additional projects:

  * FLAMEGPU2
  * GPUJPEG
  * gpu_jpeg2k

Release 1.0.2.0 (2024-09-05)#

Documented a record of the CUDA APIs already available in SCALE, and
those still to come: Implemented APIs.

Library Enhancements#

  * Kernel arguments larger than 4kb no longer crash the library.
  * Programs that ignore CUDA error codes can no longer get stuck in
    a state where the library always returns the error code you
    ignored.
  * Fixed synchronisation bugs when using synchronous cuMemset* APIs.
  * Fixed implicit synchronisation behaviour of cuMemcpy2D/
    cuMemcpy2DAsync().
  * Fixed precision issues in fp16 exp2(), rsqrt(), and h2log().
  * cudaEventRecord for an empty event no longer returns a time in
    the past.
  * Fixed occupancy API behaviour in edgecases that are not multiples
    of warp size.
  * Fixed rare crashes during static de-initialisation when library
    wrappers were in use.
  * All flags supported by SCALE's nvcc are now also accepted by our
    nvrtc implementation.
  * Various small header fixes.

Compiler Enhancements#

  * decltype() now works correctly for __host__ __device__ functions.
  * -Winvalid-constexpr no longer defaults to -Werror, for
    consistency with nvcc.
  * PTX variable names including % are no longer rejected.
  * Support for nvcc's nonstandard permissiveness surrounding missing
    typename keywords in dependent types.
  * Support for nvcc's wacky "split declaration" syntax for __host__
    __device functions (with a warning):

    int foo();
    __device__ int foo();
    __host__ int foo() {
        return 5;
    }
    // foo() is a __host__ __device__ function. :D

  * Newly-supported compiler flags (all of which are aliases for
    standard flags, or combinations thereof):
      + -device-c
      + -device-w
      + -pre-include
      + -library
      + -output-file
      + -define-macro
      + -undefine-macro

New CUDA APIs#

Math APIs#

  * exp10(__half)
  * exp2(__half)
  * rcp(__half)
  * rint(__half)
  * h2exp10(__half2)
  * h2exp2(__half2)
  * h2rcp(__half2)
  * h2rint(__half2)

Release 1.0.1.0 (2024-07-24)#

This release primarily fixes issues that prevent people from
successfully compiling their projects with SCALE. Many thanks to
those users who submitted bug reports.

CUDA APIs#

  * The extra argument to cuLaunchKernel is now supported.
  * Added support for some more undocumented NVIDIA headers.
  * Fix various overload resolution issues with atomic APIs.
  * Fix overload resolution issues with min/max.
  * Added various undocumented macros to support projects that are
    explicitly checking cuda include guard macros.
  * lrint() and llrint() no longer crash the compiler. :D
  * Newly supported CUDA APIs:
      + nvrtcGetNumSupportedArchs
      + nvrtcGetSupportedArchs
      + cudaLaunchKernelEx, cuLaunchKernelEx, cudaLaunchKernelExC:
        some of the performance-hint launch options are no-ops.
      + __vavgs2, __vavgs4
      + All the atomic*_block() and atomic*_system() variants.

Compiler#

  * Improved parsing of nvcc arguments:
      + Allow undocumented option variants (-foo bar, --foo bar,
        --foo=bar, and -foo=bar are always allowed, it seems).
      + Implement "interesting" quoting/escaping rules in nvcc
        arguments, such as embedded quotes and \,. We now correctly
        handle cursed arguments like: '-Xcompiler=-Wl\,-O1'
        '-Xcompiler=-Wl\,-rpath\,/usr/lib,-Wl\,-rpath-link\,/usr/lib'
  * Support for more nvcc arguments:

      + NVCC-style diagnostic flags: -Werror, -disable-warnings, etc.
      + --run, --run-args
      + -Xlinker, -linker-options
      + -no-exceptions, -noeh
      + -minimal: no-op. Exact semantics are undocumented, and build
        times are reasonably fast anyway.
      + -gen-opt-lto, -dlink-time-opt, -dlto. No-ops: device LTO not
        yet supported.
      + -t, --threads, -split-compile: No-ops: they're flags for
        making compilation faster and are specific to how nvcc is
        implemented.
      + -device-int128: no-op: we always enable int128.
      + -extra-device-vectorization: no-op: vectorisation
        optimisations are controlled by the usual -O* flags.
      + -entries, -source-in-ptx, -src-in-ptx: no-ops: there is no
        PTX.
      + -use-local-env, -idp, -ddp, -dp, etc.: ignored since they are
        meaningless except on Windows.
  * Allow variadic device functions in non-evaluated functions.

  * Don't warn about implicit conversion from cudaLaneMask_t to bool.
  * __builtin_provable no longer causes compiler crashes in -O0/-O1
    builds.
  * Fixed a bug causing PTX asm blocks inside non-template,
    non-dependent member functions of template classes to sometimes
    not be compiled, causing PTX to end up in the AMD binary
    unmodified.
  * CUDA launch tokens with spaces (ie.: myKernel<< <1, 1>> >()) are
    now supported.
  * Building non-cuda C translation units with SCALE-nvcc now works.

Other#

  * The meson build system no longer regards SCALE-nvcc as a "broken"
    compiler.
  * hsakmtsysinfo no longer explodes if it doesn't like your GPU.
  * New documentation pages.
  * Published more details about thirdparty testing, including the
    build scripts.

Release 1.0.0.0 (2024-07-15)#

Initial release

 
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