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Release 1.0.1 (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.