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Details: - This commit adds a new BLIS sandbox that (1) provides implementations based on low-precision gemm kernels, and (2) extends the BLIS typed API for those new implementations. Currently, these new kernels can only be used for the POWER10 microarchitecture; however, they may provide a template for developing similar kernels for other microarchitectures (even those beyond POWER), as changes would likely be limited to select places in the microkernel and possibly the packing routines. The new low-precision operations that are now supported include: shgemm, sbgemm, i16gemm, i8gemm, i4gemm. For more information, refer to the POWER10.md document that is included in 'sandbox/power10'.
For more information on sub-configurations and configuration families in BLIS, please read the Configuration Guide, which can be viewed in markdown-rendered form from the BLIS wiki page.
If you don't have time, or are impatient, take a look at the config_registry
file in the top-level directory of the BLIS distribution. It contains a
grammar-like mapping of configuration names, or families, to sub-configurations,
which may be other families. Keep in mind that the / notation:
<config>: <config>/<name>
means that the kernel set associated with <name> should be made available to
the configuration <config> if <config> is targeted at configure-time.
(Some configurations borrow kernels from other configurations, and this is how
we specify that requirement.)