Details:
- Allow building BLIS with certain framework files (each with the '_amd'
suffix) that have been customized by AMD for Zen-based hardware. These
customized files were derived from portable versions of the same files
(i.e., those without the '_amd' suffix). Whether the portable or AMD-
specific files are compiled is now controlled by a new configure
option, --[en|dis]able-amd-frame-tweaks. This option is disabled by
default in vanilla BLIS, though AMD may choose to enable it by default
in their fork. For now, the added AMD-specific files are:
- bli_gemv_unf_var2_amd.c
- bla_copy_amd.c
- bla_gemv_amd.c
These files reside in 'amd' subdirectories found within the directory
housing their generic counterparts.
- Register optimized real-domain copyv, setv, and swapv kernels in
bli_cntx_init_zen.c.
- Various minor updates to level-1v kernels in 'zen' kernel set.
- Added caxpyf kernel as well as saxpyf and multiple daxpyf kernels to
the 'zen' kernel set
- If the problem passed to ?gemm_() in bla_gemm.c has a unit m or n dim,
call gemv instead and return early.
- Combined variable declarations with their initialization in various
level-2 and level-3 BLAS compatibility files, and also inserted
'const' qualifer in those same declaration statements.
- Moved frame/compat/bla_gemmt.c and .h to frame/compat/extra/ .
- Added copyv and swapv test drivers to 'test' directory.
- Whitespace, comment changes.
Details:
- Created ?gemm3m_() and cblas_?gemm3m() APIs that (for now) simply
invoke the 1m implementation unconditionally. (Note that these APIs
bypass sup handling.)
- Added BLAS prototypes for gemm3m in frame/compat/bla_gemm3m.h.
- Added CBLAS prototypes for gemm3m in frame/compat/cblas/src/cblas.h.
- Relocated:
frame/compat/cblas/src/cblas_?gemmt.c
files into
frame/compat/cblas/src/extra/
- Relocated frame/compat/bla_gemmt.? into frame/compat/extra/ .
- Minor reorganization of prototypes and cpp macro directives in
bli_blas.h, cblas.h, and cblas_f77.h.
- Trival whitespace change to cblas_zgemm.c.
Details:
- Moved edge-case handling into the gemm microkernel. This required
changing the microkernel API to take m and n dimension parameters.
This required updating all existing gemm microkernel function pointer
types, function signatures, and related definitions to take m and n
dimensions. We also updated all existing kernels in the 'kernels'
directory to take m and n dimensions, and implemented edge-case
handling within those microkernels via a collection of new C
preprocessor macros defined within bli_edge_case_macro_defs.h. Also
removed the assembly code that formerly would handle general stride
IO on the microtile, since this can now be handled by the same code
that does edge cases.
- Pass the obj_t.ker_fn (of matrix C) into bli_gemm_cntl_create() and
bli_trsm_cntl_create(), where this function pointer is used in lieu of
the default macrokernel when it is non-NULL, and ignored when it is
NULL.
- Re-implemented macrokernel in bli_gemm_ker_var2.c to be a single
function using byte pointers rather that one function for each
floating-point datatype. Also, obtain the microkernel function pointer
from the .ukr field of the params struct embedded within the obj_t
for matrix C (assuming params is non-NULL and contains a non-NULL
value in the .ukr field). Communicate both the gemm microkernel
pointer to use as well as the params struct to the microkernel via
the auxinfo_t struct.
- Defined gemm_ker_params_t type (for the aforementioned obj_t.params
struct) in bli_gemm_var.h.
- Retired the separate _md macrokernel for mixed datatype computation.
We now use the reimplemented bli_gemm_ker_var2() instead.
- Updated gemmt macrokernels to pass m and n dimensions into microkernel
calls.
- Removed edge-case handling from trmm and trsm macrokernels.
- Moved most of bli_packm_alloc() code into a new helper function,
bli_packm_alloc_ex().
- Fixed a typo bug in bli_gemmtrsm_u_template_noopt_mxn.c.
- Added test/syrk_diagonal and test/tensor_contraction directories with
associated code to test those operations.
Details:
- Replaced the hard-coded calls to double-precision real syr, syr2,
syrk, and syrk in the corresponding standalone test drivers in the
'test' directory with conditional branches that will call the
appropriate BLAS interface depending on which datatype is enabled.
Thanks to Madan mohan Manokar for this improvement.
- CREDITS file update.
Details:
- Expanded the BLAS compatibility layer to include support for
?axpby_() and ?gemm_batch_(). The former is a straightforward
BLAS-like interface into the axpbyv operation while the latter
implements a batched gemm via loops over bli_?gemm(). Also
expanded the CBLAS compatibility layer to include support for
cblas_?axpby() and cblas_?gemm_batch(), which serve as wrappers to
the corresponding (new) BLAS-like APIs. Thanks to Meghana Vankadari
for submitting these new APIs via #566.
- Fixed a long-standing bug in common.mk that for some reason never
manifested until now. Previously, CBLAS source files were compiled
*without* the location of cblas.h being specified via a -I flag.
I'm not sure why this worked, but it may be due to the fact that
the cblas.h file resided in the same directory as all of the CBLAS
source, and perhaps compilers implicitly add a -I flag for the
directory that corresponds to the location of the source file being
compiled. This bug only showed up because some CBLAS-like source code
was moved into an 'extra' subdirectory of that frame/compat/cblas/src
directory. After moving the code, compilation for those files failed
(because the cblas.h header file, presumably, could not be found in
the same location). This bug was fixed within common.mk by explicitly
adding the cblas.h directory to the list of -I flags passed to the
compiler.
- Added test_axpbyv.c and test_gemm_batch.c files to 'test' directory,
and updated test/Makefile to build those drivers.
- Fixed typo in error message string in cblas_sgemm.c.
Details:
- Removed support for all induced methods except for 1m. This included
removing code related to 3mh, 3m1, 4mh, 4m1a, and 4m1b as well as any
code that existed only to support those implementations. These
implementations were rarely used and posed code maintenance challenges
for BLIS's maintainers going forward.
- Removed reference kernels for packm that pack 3m and 4m micropanels,
and removed 3m/4m-related code from bli_cntx_ref.c.
- Removed support for 3m/4m from the code in frame/ind, then reorganized
and streamlined the remaining code in that directory. The *ind(),
*nat(), and *1m() APIs were all removed. (These additional API layers
no longer made as much sense with only one induced method (1m) being
supported.) The bli_ind.c file (and header) were moved to frame/base
and bli_l3_ind.c (and header) and bli_l3_ind_tapi.h were moved to
frame/3.
- Removed 3m/4m support from the code in frame/1m/packm.
- Removed 3m/4m support from trmm/trsm macrokernels and simplified some
pointer arithmetic that was previously expressed in terms of the
bli_ptr_inc_by_frac() static inline function (whose definition was
also removed).
- Removed the following subdirectories of level-0 macro headers from
frame/include/level0: ri3, rih, ri, ro, rpi. The level-0 scalar macros
defined in these directories were used exclusively for 3m and 4m
method codes.
- Simplified bli_cntx_set_blkszs() and bli_cntx_set_ind_blkszs() in
light of 1m being the only induced method left within BLIS.
- Removed dt_on_output field within auxinfo_t and its associated
accessor functions.
- Re-indexed the 1e/1r pack schemas after removing those associated with
variants of the 3m and 4m methods. This leaves two bits unused within
the pack format portion of the schema bitfield. (See bli_type_defs.h
for more info.)
- Spun off the basic and expert interfaces to the object and typed APIs
into separate files: bli_l3_oapi.c and bli_l3_oapi_ex.c; bli_l3_tapi.c
and bli_l3_tapi_ex.c.
- Moved the level-3 operation-specific _check function calls from the
operations' _front() functions to the corresponding _ex() function of
the object API. (This change roughly maintains where the _check()
functions are called in the call stack but lays the groundwork for
future changes that may come to the level-3 object APIs.) Minor
modifications to bli_l3_check.c to allow the check() functions to be
called from the expert interface APIs.
- Removed support within the testsuite for testing the aforementioned
induced methods, and updated the standalone test drivers in the 'test'
directory so reflect the retirement of those induced methods.
- Modified the sandbox contract so that the user is obliged to define
bli_gemm_ex() instead of bli_gemmnat(). (This change was made in light
of the *nat() functions no longer existing.) Also updated the existing
'power10' and 'gemmlike' sandboxes to come into compliance with the
new sandbox rules.
- Updated BLISObjectAPI.md, BLISTypedAPI.md, Testsuite.md documentation
to reflect the retirement of 3m/4m, and also modified Sandboxes.md to
bring the document into alignment with new conventions.
- Updated various comments; removed segments of commented-out code.
Details:
- Added single-threaded and multithreaded performance results to
docs/Performance.md. These results were gathered on a Graviton2
Neoverse N1 server. Special thanks to Nicholai Tukanov for
collecting these results via the Arm-HPC/AWS hackaton.
- Corrected what was supposed to be a temporary tweak to the legend
labels in test/3/octave/plot_l3_perf.m.
Details:
- Updated the performance graphs (pdfs and pngs) for the Fugaku/a64fx
entry within Performance.md, and also updated the experiment details
accordingly. Thanks to RuQing Xu for re-running the BLIS and SSL2
experiments reflected in this commit.
- In Performance.md, added an English translation of the project name
under which the Fugaku results were gathered, courtesy of RuQing Xu.
Details:
- Fixed an issue where the wrong string was being passed in for the
vendor legend string.
- Changed the graph in which the legends appear.
- Updates to runthese.m.
Details:
- Modified the octave scripts in test/3 so that the script does not
choke when one or more of the expected OpenBLAS, Eigen, or vendor data
files is missing. (The BLIS data set, however, must be complete.) When
a file is missing, that data series is simply not included on that
particular graph. Also factored out a lot of the redundant logic from
plot_panel_4x5.m into a separate function in read_data.m.
Merged contributions from AMD's AOCL BLIS (#448).
Details:
- Added support for level-3 operation gemmt, which performs a gemm on
only the lower or upper triangle of a square matrix C. For now, only
the conventional/large code path will be supported (in vanilla BLIS).
This was accomplished by leveraging the existing variant logic for
herk. However, some of the infrastructure to support a gemmtsup is
included in this commit, including
- A bli_gemmtsup() front-end, similar to bli_gemmsup().
- A bli_gemmtsup_ref() reference handler function.
- A bli_gemmtsup_int() variant chooser function (with variant calls
commented out).
- Added support for inducing complex domain gemmt via the 1m method.
- Added gemmt APIs to the BLAS and CBLAS compatiblity layers.
- Added gemmt test module to testsuite.
- Added standalone gemmt test driver to 'test' directory.
- Documented gemmt APIs in BLISObjectAPI.md and BLISTypedAPI.md.
- Added a C++ template header (blis.hh) containing a BLAS-inspired
wrapper to a set of polymorphic CBLAS-like function wrappers defined
in another header (cblas.hh). These two headers are installed if
running the 'install' target with INSTALL_HH is set to 'yes'. (Also
added a set of unit tests that exercise blis.hh, although they are
disabled for now because they aren't compatible with out-of-tree
builds.) These files now live in the 'vendor' top-level directory.
- Various updates to 'zen' and 'zen2' subconfigurations, particularly
within the context initialization functions.
- Added s and d copyv, setv, and swapv kernels to kernels/zen/1, and
various minor updates to dotv and scalv kernels. Also added various
sup kernels contributed by AMD to kernels/zen/3. However, these
kernels are (for now) not yet used, in part because they caused
AppVeyor clang failures, and also because I have not found time to
review and vet them.
- Output the python found during configure into the definition of PYTHON
in build/config.mk (via build/config.mk.in).
- Added early-return checks (A, B, or C with zero dimension; alpha = 0)
to bli_gemm_front.c.
- Implemented explicit beta = 0 handling in for the sgemm ukernel in
bli_gemm_armv7a_int_d4x4.c, which was previously missing. This latent
bug surfaced because the gemmt module verifies its computation using
gemm with its beta parameter set to zero, which, on a cortexa15 system
caused the gemm kernel code to unconditionally multiply the
uninitialized C data by beta. The C matrix likely contained
non-numeric values such as NaN, which then would have resulted in a
false failure.
- Fixed a bug whereby the implementation for bli_herk_determine_kc(),
in bli_l3_blocksize.c, was inadvertantly being defined in terms of
helper functions meant for trmm. This bug was probably harmless since
the trmm code should have also done the right thing for herk.
- Used cpp macros to neutralize the various AOCL_DTL_TRACE_ macros in
kernels/zen/3/bli_gemm_small.c since those macros are not used in
vanilla BLIS.
- Added cpp guard to definition of bli_mem_clear() in bli_mem.h to
accommodate C++'s stricter type checking.
- Added cpp guard to test/*.c drivers that facilitate compilation on
Windows systems.
- Various whitespace changes.
Details:
- Added single-threaded and multithreaded sup performance results to
docs/PerformanceSmall.md for both sgemm and dgemm. These results were
gathered on an Epyc 7742 "Rome" server featuring AMD's Zen2
microarchitecture. Special thanks to Jeff Diamond for facilitating
access to the system via the Oracle Cloud.
- Updates to octave scripts in test/sup/octave for use with Octave 5.2
and for use with subplot_tight().
- Minor updates to octave scripts in test/3/octave.
- Renamed files containing the previous Zen performance results for
consistency with the new results.
- Decreased line thickness slightly in large/conventional Zen2 graphs.
I'm done tweaking those this time. Really.
- Added missing line regarding eigen header installation for each
microarchitecture section.
Details:
- Registered full suite of sgemm and dgemm sup millikernels, blocksizes,
and crossover thresholds in bli_cntx_init_zen2.c.
- Minor updates to test/sup/runme.sh for running on Zen2 Epyc 7742
system.
Details:
- Renamed test/3/matlab to test/3/octave.
- Within test/3, updated and tuned plot_l3_perf.m and plot_panel_4x5.m
files for use with octave (which is free and doesn't crash on me
mid-way through my use of subplot).
- Updated runthese.m scratchpad for zen2 invocations.
- Added Nikolay S.'s subplot_tight() function, along with its license.
Details:
- Created a set of single-precision real millikernels and microkernels
comparable to the dgemmsup kernels that already exist within BLIS.
- Added prototypes for all kernels within bli_kernels_haswell.h.
- Registered entry-point millikernels in bli_cntx_init_haswell.c and
bli_cntx_init_zen.c.
- Added sgemmsup support to the Makefile, runme.sh script, and source
file in test/sup. This included edits that allow for separate "small"
dimensions for single- and double-precision as well as for single-
vs. multithreaded execution.
Details:
- Textually replaced nearly all non-comment instances of bool_t with the
C99 bool type. A few remaining instances, such as those in the files
bli_herk_x_ker_var2.c, bli_trmm_xx_ker_var2.c, and
bli_trsm_xx_ker_var2.c, were promoted to dim_t since they were being
used not for boolean purposes but to index into an array.
- This commit constitutes the third phase of a transition toward using
C99's bool instead of bool_t, which was raised in issue #420. The first
phase, which cleaned up various typecasts in preparation for using
bool as the basis for bool_t (instead of gint_t), was implemented by
commit a69a4d7. The second phase, which redefined the bool_t typedef
in terms of bool (from gint_t), was implemented by commit 2c554c2.
Details:
- Updated Makefiles in test, test/3, and test/sup so that running any of
the usual targets without having first built BLIS results in a helpful
error message. For example, if BLIS is not yet configured, make will
output:
Makefile:327: *** Cannot proceed: config.mk not detected! Run
configure first. Stop.
Similarly, if BLIS is configured but not yet built, make will output:
Makefile:340: *** Cannot proceed: BLIS library not yet built! Run
make first. Stop.
In previous commits, these actions would result in a rather cryptic
make error such as:
make: *** No rule to make target 'test_sgemm_2400_asm_blis_st.x',
needed by 'blis-nat-st'. Stop.
Details:
- Updated the test/sup source file (test_gemm.c) and Makefile to support
building matrices with small or large leading dimensions, and updated
runme.sh to support executing both kinds of test drivers.
- Updated runme.sh to allow for executing sup drivers with unpacked (the
default) or packed matrices (via setting BLIS_PACK_A, BLIS_PACK_B
environment variables), and for capturing output to files that encode
both the leading dimension (small or large) and packing status into
the filenames.
- Consolidated octave scripts in test/sup/octave_st, test/sup/octave_mt
into test/sup/octave and updated the octave code in that consolidated
directory to read the new output filename format (encoding ldim and
packing). Also added comments and streamlined code, particularly in
plot_panel_trxsh.m. Tested the octave scripts with octave 5.2.0.
- Moved old octave_st, octave_mt directories to test/sup/old.
Details:
- Made several updates to test/1m4m/runme.sh, including:
- Added missing handling for 1m and 4m1a implementations when setting
the BLIS_??_NT environment variables.
- Added support for using numactl to run the test executables.
- Several other cleanups.
Details:
- Updated the Makefile, test_gemm.c, and runme.sh in test/sup to be able
to compile and run both single-threaded and multithreaded experiments.
This should help with maintenance going forward.
- Created a test/sup/octave_st directory of scripts (based on the
previous test/sup/octave scripts) as well as a test/sup/octave_mt
directory (based on the previous test/supmt/octave scripts). The
octave scripts are slightly different and not easily mergeable, and
thus for now I'll maintain them separately.
- Preserved the previous test/sup directory as test/sup/old/supst and
the previous test/supmt directory as test/sup/old/supmt.
Details:
- Reran all existing single-threaded performance experiments comparing
BLIS sup to other implementations (including the conventional code
path within BLIS), using the latest versions (where appropriate).
- Added multithreaded results for the three existing hardware types
showcased in docs/PerformanceSmall.md: Kaby Lake, Haswell, and Epyc
(Zen1).
- Various minor updates to the text in docs/PerformanceSmall.md.
- Updates to the octave scripts in test/sup/octave, test/supmt/octave.
Details:
- Updated test/sup/Makefile and test/supmt/Makefile to allow specifying
different problem size ranges for the drivers where one, two, or three
matrix dimensions is large. This will facilitate the generation of
more meaningful graphs, particularly when two dimensions are tiny.
Details:
- Optimized scripts in test/sup/octave and test/supmt/octave for use
with octave 5.2.0 on Ubuntu 18.04.
- Fixed stray 'end' keywords in gen_opsupnames.m and plot_l3sup_perf.m,
which were not only unnecessary but also causing issues with versions
5.x.
Details:
- Added multithreading support to the sup framework (via either OpenMP
or pthreads). Both variants 1n and 2m now have the appropriate
threading infrastructure, including data partitioning logic, to
parallelize computation. This support handles all four combinations
of packing on matrices A and B (neither, A only, B only, or both).
This implementation tries to be a little smarter when automatic
threading is requested (e.g. via BLIS_NUM_THREADS) in that it will
recalculate the factorization in units of micropanels (rather than
using the raw dimensions) in bli_l3_sup_int.c, when the final
problem shape is known and after threads have already been spawned.
- Implemented bli_?packm_sup_var2(), which packs to conventional row-
or column-stored matrices. (This is used for the rrc and crc storage
cases.) Previously, copym was used, but that would no longer suffice
because it could not be parallelized.
- Minor reorganization of packing-related sup functions. Specifically,
bli_packm_sup_init_mem_[ab]() are called from within packm_sup_[ab]()
instead of from the variant functions. This has the effect of making
the variant functions more readable.
- Added additional bli_thrinfo_set_*() static functions to bli_thrinfo.h
and inserted usage of these functions within bli_thrinfo_init(), which
previously was accessing thrinfo_t fields via the -> operator.
- Renamed bli_partition_2x2() to bli_thread_partition_2x2().
- Added an auto_factor field to the rntm_t struct in order to track
whether automatic thread factorization was originally requested.
- Added new test drivers in test/supmt that perform multithreaded sup
tests, as well as appropriate octave/matlab scripts to plot the
resulting output files.
- Added additional language to docs/Multithreading.md to make it clear
that specifying any BLIS_*_NT variable, even if it is set to 1, will
be considered manual specification for the purposes of determining
whether to auto-factorize via BLIS_NUM_THREADS.
- Minor comment updates.
Details:
- Added missing license header to bli_pwr9_asm_macros_12x6.h.
- Reverted temporary changes to various files in 'test' and 'testsuite'
directories.
- Moved testsuite/jobscripts into testsuite/old.
- Minor whitespace/comment changes across various files.
Implemented and registered power9 dgemm ukernel.
Details:
- Implemented 12x6 dgemm microkernel for power9. This microkernel
assumes that elements of B have been duplicated/broadcast during the
packing step. The microkernel uses a column orientation for its
microtile vector registers and thus implements column storage and
general stride IO cases. (A row storage IO case via in-register
transposition may be added at a future date.) It should be noted that
we recommend using this microkernel with gcc and *not* xlc, as issues
with the latter cropped up during development, including but not
limited to slightly incompatible vector register mnemonics in the GNU
extended inline assembly clobber list.
Details:
- NOTE: This is a merge commit of 'master' of git://github.com/amd/blis
into 'amd-master' of flame/blis.
- Fixed a bug in the downstream value of BLIS_NUM_ARCHS, which was
inadvertantly not incremented when the Zen2 subconfiguration was
added.
- In bli_gemm_front(), added a missing conditional constraint around the
call to bli_gemm_small() that ensures that the computation precision
of C matches the storage precision of C.
- In bli_syrk_front(), reorganized and relocated the notrans/trans logic
that existed around the call to bli_syrk_small() into bli_syrk_small()
to minimize the calling code footprint and also to bring that code
into stylistic harmony with similar code in bli_gemm_front() and
bli_trsm_front(). Also, replaced direct accessing of obj_t fields with
proper accessor static functions (e.g. 'a->dim[0]' becomes
'bli_obj_length( a )').
- Added #ifdef BLIS_ENABLE_SMALL_MATRIX guard around prototypes for
bli_gemm_small(), bli_syrk_small(), and bli_trsm_small(). This is
strictly speaking unnecessary, but it serves as a useful visual cue to
those who may be reading the files.
- Removed cpp macro-protected small matrix debugging code from
bli_trsm_front.c.
- Added a GCC_OT_9_1_0 variable to build/config.mk.in to facilitate gcc
version check for availability of -march=znver2, and added appropriate
support to configure script.
- Cleanups to compiler flags common to recent AMD microarchitectures in
config/zen/amd_config.mk, including: removal of -march=znver1 et al.
from CKVECFLAGS (since the -march flag is added within make_defs.mk);
setting CRVECFLAGS similarly to CKVECFLAGS.
- Cleanups to config/zen/bli_cntx_init_zen.c.
- Cleanups, added comments to config/zen/make_defs.mk.
- Cleanups to config/zen2/make_defs.mk, including making use of newly-
added GCC_OT_9_1_0 and existing GCC_OT_6_1_0 to choose the correct
set of compiler flags based on the version of gcc being used.
- Reverted downstream changes to test/test_gemm.c.
- Various whitespace/comment changes.
Details:
- Added section titled "Reproduction" to both Performance.md and
PerformanceSmall.md that briefly nudges the motivated reader in the
right direction if he/she wishes to run the same performance
benchmarks used to produce the graphs shown in those documents.
Thanks to Dave Love for making this suggestion.
Details:
- Updated test driver source in test, test/3, test/1m4m, and
test/mixeddt to iterate through the problem space backwards. This
can help avoid certain situations where the CPU frequency does not
immediately throttle up to its maximum. Thanks to Robert van de
Geijn for recommending this fix (originally made to test/sup drivers
in 57e422a).
- Applied off-by-one matlab output bugfix from b6017e5 to test drivers
in test, test/3, test/1m4m, and test/mixeddt directories.
Details:
- Fixed an off-by-one bug in the output of matlab row indices in
test/sup/test_gemm.c that only manifested when the problem size
increment was equal to 1.
- Disabled the building of rrc, rcr, rcc, crr, crc, and ccr storage
combinations for blissup drivers in test/sup. This helps make the
building of drivers complete sooner.
- Trivial changes to test/sup/runme.sh.
Details:
- Changed the value of alpha to 1.0 in test/sup/test_gemm.c. This is
needed because libxsmm currently only optimizes gemm operations where
alpha is unit (and beta is unit or zero).
- Adjusted the test/sup/Makefile to test libxsmm with netlib BLAS as its
fallback library. This is the library that will be called the
problem dimensions are deemed too large, or any other criteria for
optimization are not met. (This was done not because it is realistic,
but rather so that it would be very clear when libxsmm ceased handling
gemm calls internally when the data are graphed.)
Details:
- Switch the driver source in test/sup so that libxsmm_?gemm() is called
instead of ?gemm_() when compiling for / linking against libxsmm.
libxsmm's documentation isn't clear on whether it is even *trying* to
provide BLAS API compatibility, and I got tired of trying to figure it
out.
- Added missing -ldl in LDFLAGS when linking against libxsmm.
Details:
- Modified test/sup/Makefile to build drivers that test the performance
of skinny/small problems via libxsmm.
- Modified test/sup/runme.sh to run aforementioned drivers.
- Modified test/sup/test_gemm.c so that problem sizes are tested in
reverse order (from largest to smallest). This can help avoid certain
situations where the CPU frequency does not immediately throttle up
to its maximum. Thanks to Robert van de Geijn for recommending this
fix.
Details:
- Added a new standalone test driver directory named '1m4m' that can
build and run performance experiments for BLIS 1m, 4m1a, assembly,
OpenBLAS, and the vendor library (MKL). This new driver directory
was used to regenerate performance results for the 1m paper.
- Added alternate (commented-out) cache blocksizes to
config/haswell/bli_cntx_init_haswell.c. These blocksizes tend to
work well on an a 12-core Intel Xeon E5-2650 v3.
Details:
- Defined two new static functions in bli_cntx.h:
bli_cntx_set_blksz_def_dt()
bli_cntx_set_blksz_max_dt()
which developers may find convenient when experimenting with different
values of cache blocksizes.
- Updated one- and two-socket multithreaded problem size range and
increment values in test/3/Makefile.
- Changed default to column storage in test/3/test_gemm.c.
- Fixed typo in comment in testsuite/src/test_subm.c.
Details:
- Updated the BLASFEO performance graphs shown in PerformanceSmall.md
using a new commit of BLASFEO (2c9f312); updated PerformanceSmall.md
accordingly.
- Updated test/sup/octave/plot_l3sup_perf.m so that the .m files
containing the mpnpkp results do not need to be preprocessed in order
to plot half the problem size range (ie: up to 400 instead of the
800 range of the other shape cases).
- Trivial updates to runme.m.
Details:
- Updated the graphs linked in PerformanceSmall.md with BLASFEO results,
and added documenting language accordingly.
- Updated scripts in test/sup/octave to plot BLASFEO data.
- Minor tweak to language re: how OpenBLAS was configured for
docs/Performance.md.
Details:
- Changed starting problem and increment from 16 to 4.
- Added 'lll' (square problems) to list of problem size shapes to
compile and run with.
- Define BLASFEO location and added BLASFEO-related definitions.
Details:
- Added a new markdown document, docs/PerformanceSmall.md, which
publishes new performance graphs for Kaby Lake and Epyc showcasing
the new BLIS sup (small/skinny/unpacked) framework logic and kernels.
For now, only single-threaded dgemm performance is shown.
- Reorganized graphs in docs/graphs into docs/graphs/large, with new
graphs being placed in docs/graphs/sup.
- Updates to scripts in test/sup/octave, mostly to allow decent output
in both GNU octave and Matlab.
- Updated README.md to mention and refer to the new PerformanceSmall.md
document.
Details:
- Fine-tuned the double-precision real MT threshold (which controls
whether the sup implementation kicks for smaller m dimension values)
from 180 to 201 for haswell and 180 to 256 for zen.
- Updated octave scripts in test/sup/octave to include a seventh column
to display performance for m = n = k.
Details:
- Commented out redundant setting of LIBBLIS_LINK within all driver-
level Makefiles. This variable is already set within common.mk, and
so the only time it should be overridden is if the user wants to link
to a different copy of libblis.
- Very minor changes to build/gen-make-frags/gen-make-frag.sh.
- Whitespace and inconsequential quoting change to configure.
- Moved top-level 'windows' directory into a new 'attic' directory.
