we want to be able to run BLIS KNL binaries on non-KNL machines via SDE.
although it is possible to install hbwmalloc implementation on such
systems, it is easier not to, since obviously the performance of SDE
execution is not representative so there is no reason to emulate HBW
allocation.
Details:
- Implemented the 1m method for inducing complex domain matrix
multiplication. 1m support has been added to all level-3 operations,
including trsm, and is now the default induced method when native
complex domain gemm microkernels are omitted from the configuration.
- Updated _cntx_init() operations to take a datatype parameter. This was
needed for the corresponding function for 1m (because 1m requires us
to choose between column-oriented or row-oriented execution, which
requires us to query the context for the storage preference of the
gemm microkernel, which requires knowing the datatype) but I decided
that it made sense for consistency to add the parameter to all other
cntx initialization functions as well, even though those functions
don't use the parameter.
- Updated bli_cntx_set_blkszs() and bli_gks_cntx_set_blkszs() to take
a second scalar for each blocksize entry. The semantic meaning of the
two scalars now is that the first will scale the default blocksize
while the second will scale the maximum blocksize. This allows scaling
the two independently, and was needed to support 1m, which requires
scaling for a register blocksize but not the register storage
blocksize (ie: "packdim") analogue.
- Deprecated bli_blksz_reduce_dt_to() and defined two new functions,
bli_blksz_reduce_def_to() and bli_blksz_reduce_max_to(), for reducing
default and maximum blocksizes to some desired blocksize multiple.
These functions are needed in the updated definitions of
bli_cntx_set_blkszs() and bli_gks_cntx_set_blkszs().
- Added support for the 1e and 1r packing schemas to packm, including
1e/1r packing kernels.
- Added a minor optimization to bli_gemm_ker_var2() that allows, under
certain circumstances (specifically, real domain beta and row- or
column-stored matrix C), the real domain macrokernel and microkernel
to be called directly, rather than using the virtual microkernel
via the complex domain macrokernel, which carries a slight additional
amount of overhead.
- Added 1m support to the testsuite.
- Added 1m support to Makefile and runme.sh in test/3m4m. Also simplified
some code in test_gemm.c driver.
Intel compilers include a highly optimized math library (libimf) that
should be used instead of GNU libm.
yes, this change is for ALL targets, including those that are not
supported by the Intel compiler. there is no harm in doing this, and it
is future-proof in the event that the Intel compilers support other
architectures.
Details:
- Replaced permutation-based implementations in bli_gemm_asm_d4x12.c, which
defines 4x24 single real and 4x12 double real gemm microkernels, with
broadcast-based implementations. (The previous microkernel file has been
moved to an 'old' subdirectory.)
Details:
- Updated s and d microkernels in bli_gemm_asm_d8x6.c to relax alignment
constraints.
- Added missing c and z microkernels, which are based on the corresponding
kernels in the d6x8 set.
- This completes the d8x6 set (which may be used for situations when it
is desirable to have a microkernel with a column preference).
Details:
- Updated the top-level Makefile, build/config.mk.in template, and
configure script so that object files corresponding to source files
belonging to the BLAS compatibility layer are not compiled (or archived)
when the compatibility layer is disabled. (Same for CBLAS.) Thanks
to Devin Matthews for suggesting this optimization.
- Slight change to the way configure handles internal variables. Instead
of converting (overwriting) some, such as enable_blas2blis and
enable_cblas, from a "yes" or "no" to a "1" or "0" value, the latter are
now stored in new variables that live alongside the originals (with the
suffix "_01"). This is convenient since some values need to be
sed-substituted into the config.mk.in template, which requires "yes" or
"no", while some need to be written to the bli_config.h.in template,
which requires "0" or "1".
Updated BLIS4 TOMS citation in README.md.
Added complex gemm micro-kernels for haswell.
Details:
- Defined cgemm (3x8) and zgemm (3x4) micro-kernels for haswell-based
architectures. As with their real domain brethren, these kernels perfer
row storage, (though this doesn't affect most users due to high-level
optimizations in most level-3 operations that induce a transpose to
whatever storage preference the kernel may have).
Change-Id: I512ab90784ecbb7cdaee24928d2ccebb544ba5c1
Details:
- Defined cgemm (3x8) and zgemm (3x4) micro-kernels for haswell-based
architectures. As with their real domain brethren, these kernels perfer
row storage, (though this doesn't affect most users due to high-level
optimizations in most level-3 operations that induce a transpose to
whatever storage preference the kernel may have).
