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- As part of AOCL-BLAS, there exists a set of vectorized
SUP kernels for GEMM, that are performant when invoked
in a bare-metal fashion.
- Designed a macro-based interface for handling tiny
sizes in GEMM, that would utilize there kernels. This
is currently instantiated for 'Z' datatype(double-precision
complex).
- Design breakdown :
- Tiny path requires the usage of AVX2 and/or AVX512
SUP kernels, based on the micro-architecture. The
decision logic for invoking tiny-path is specific
to the micro-architecture. These thresholds are defined
in their respective configuration directories(header files).
- List of AVX2/AVX512 SUP kernels(lookup table), and their
lookup functions are defined in the base-architecture from
which the support starts. Since we need to support backward
compatibility when defining the lookup table/functions, they
are present in the kernels folder(base-architecture).
- Defined a new type to be used to create the lookup table and its
entries. This type holds the kernel pointer, blocking dimensions
and the storage preference.
- This design would only require the appropriate thresholds and
the associated lookup table to be defined for the other datatypes
and micro-architecture support. Thus, is it extensible.
- NOTE : The SUP kernels that are listed for Tiny GEMM are m-var
kernels. Thus, the blocking in framework is done accordingly.
In case of adding the support for n-var, the variant
information could be encoded in the object definition.
- Added test-cases to validate the interface for functionality(API
level tests). Also added exception value tests, which have been
disabled due to the SUP kernel optimizations.
AMD-Internal: [CPUPL-6040][CPUPL-6018][CPUPL-5319][CPUPL-3799]
Change-Id: I84f734f8e683c90efa63f2fa79d2c03484e07956