[Openmp-commits] [PATCH] D93169: [OpenMP] Added the support for cache line size 256 for A64FX

[Shilei Tian via Phabricator via Openmp-commits]

tianshilei1992 created this revision.
Herald added subscribers: s.egerton, guansong, simoncook, kristof.beyls, yaxunl, mgorny.
tianshilei1992 requested review of this revision.
Herald added a reviewer: jdoerfert.
Herald added subscribers: openmp-commits, sstefan1.
Herald added a project: OpenMP.

Fugaku supercomputer is built with the Fujitsu A64FX microprocessor, whose cache line is 256. In current libomp, we only have cache line size 128 for PPC64 and otherwise 64. This patch added the support of cache line 256 for A64FX. It's worth noting that although A64FX is a variant of AArch64, this property is not shared. As a result, in light of UCX source code (https://github.com/openucx/ucx/blob/392443ab92626412605dee1572056f79c897c6c3/src/ucs/arch/aarch64/cpu.c#L17), we can only determine by checking whether the CPU is FUJITSU A64FX.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D93169

Files:
  openmp/runtime/CMakeLists.txt
  openmp/runtime/cmake/LibompGetArchitecture.cmake
  openmp/runtime/cmake/LibompUtils.cmake
  openmp/runtime/src/kmp_config.h.cmake

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