efdb5a06df
amdzen and x86_64 configuration family: On Intel processors supporting AVX-512, the zen4 sub-configuration was dispatched by default, as even though it is not optimized specifically for Intel processors, it includes a range of additional optimizations than are present in the the older skx sub-configuration. However, the zen4 data path is 256 bit, thus this sub-configuration uses a mixture of AVX2 and AVX-512 kernels. Now that zen5 sub-configuration is available, with more extensive use of AVX-512 kernels, switch to use this by default on relevant Intel processors. intel64 configuration family: On AMD processors supporting AVX-512 or AVX2, the generic sub-configuation was dispatched by default. Change to dispatch skx or haswell sub-configuation, based on the available ISA support. AMD-Internal: [CPUPL-6743]
AOCL-BLAS library
AOCL-BLAS is AMD's optimized version of BLAS targeted for AMD EPYC and Ryzen CPUs. It is developed as a forked version of BLIS (https://github.com/flame/blis), which is developed by members of the Science of High-Performance Computing (SHPC) group in the Institute for Computational Engineering and Sciences at The University of Texas at Austin and other collaborators (including AMD). All known features and functionalities of BLIS are retained and supported in AOCL-BLAS library. AOCL-BLAS is regularly updated with the improvements from the upstream repository.
AOCL BLAS is optimized with SSE2, AVX2, AVX512 instruction sets which would be enabled based on the target Zen architecture using the dynamic dispatch feature. All prominent Level 3, Level 2 and Level 1 APIs are designed and optimized for specific paths targeting different size spectrums e.g., Small, Medium and Large sizes. These algorithms are designed and customized to exploit the architectural improvements of the target platform.
For detailed instructions on how to configure, build, install, and link against AOCL-BLAS on AMD CPUs, please refer to the AOCL User Guide located on AMD developer portal.
The upstream repository (https://github.com/flame/blis) contains further information on BLIS, including background information on BLIS design, usage examples, and a complete BLIS API reference.
AOCL-BLAS is developed and maintained by AMD. You can contact us on the email-id toolchainsupport@amd.com. You can also raise any issue/suggestion on the git-hub repository at https://github.com/amd/blis/issues.