mirror of
https://github.com/amd/blis.git
synced 2026-05-01 13:01:12 +00:00
ac18949a4b
Details:
- Adjusted the method by which micropanels are assigned to threads in
the 2nd (jr) and 1st (ir) loops around the microkernel to (mostly)
employ contiguous "slab" partitioning rather than interleaved (round
robin) partitioning. The new partitioning schemes and related details
for specific families of operations are listed below:
- gemm: slab partitioning.
- herk: slab partitioning for region corresponding to non-triangular
region of C; round robin partitioning for triangular region.
- trmm: slab partitioning for region corresponding to non-triangular
region of B; round robin partitioning for triangular region.
(NOTE: This affects both left- and right-side macrokernels:
trmm_ll, trmm_lu, trmm_rl, trmm_ru.)
- trsm: slab partitioning.
(NOTE: This only affects only left-side macrokernels trsm_ll,
trsm_lu; right-side macrokernels were not touched.)
Also note that the previous macrokernels were preserved inside of
the 'other' directory of each operation family directory (e.g.
frame/3/gemm/other, frame/3/herk/other, etc).
- Updated gemm macrokernel in sandbox/ref99 in light of above changes
and fixed a stale function pointer type in blx_gemm_int.c
(gemm_voft -> gemm_var_oft).
- Added standalone test drivers in test/3m4m for herk, trmm, and trsm
and minor changes to test/3m4m/Makefile.
- Updated the arguments and definitions of bli_*_get_next_[ab]_upanel()
and bli_trmm_?_?r_my_iter() macros defined in bli_l3_thrinfo.h.
- Renamed bli_thread_get_range*() APIs to bli_thread_range*().
540 lines
16 KiB
C
540 lines
16 KiB
C
/*
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BLIS
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An object-based framework for developing high-performance BLAS-like
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libraries.
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Copyright (C) 2014, The University of Texas at Austin
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Copyright (C) 2018, Advanced Micro Devices, Inc.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of The University of Texas at Austin nor the names
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of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "blis.h"
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#define FUNCPTR_T gemm_fp
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typedef void (*FUNCPTR_T)
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(
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doff_t diagoffb,
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pack_t schema_a,
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pack_t schema_b,
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dim_t m,
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dim_t n,
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dim_t k,
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void* alpha,
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void* a, inc_t cs_a, dim_t pd_a, inc_t ps_a,
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void* b, inc_t rs_b, dim_t pd_b, inc_t ps_b,
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void* beta,
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void* c, inc_t rs_c, inc_t cs_c,
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cntx_t* cntx,
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rntm_t* rntm,
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thrinfo_t* thread
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);
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static FUNCPTR_T GENARRAY(ftypes,trmm_ru_ker_var2);
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void bli_trmm_ru_ker_var2
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(
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obj_t* a,
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obj_t* b,
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obj_t* c,
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cntx_t* cntx,
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rntm_t* rntm,
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cntl_t* cntl,
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thrinfo_t* thread
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)
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{
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num_t dt_exec = bli_obj_exec_dt( c );
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doff_t diagoffb = bli_obj_diag_offset( b );
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pack_t schema_a = bli_obj_pack_schema( a );
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pack_t schema_b = bli_obj_pack_schema( b );
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dim_t m = bli_obj_length( c );
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dim_t n = bli_obj_width( c );
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dim_t k = bli_obj_width( a );
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void* buf_a = bli_obj_buffer_at_off( a );
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inc_t cs_a = bli_obj_col_stride( a );
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dim_t pd_a = bli_obj_panel_dim( a );
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inc_t ps_a = bli_obj_panel_stride( a );
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void* buf_b = bli_obj_buffer_at_off( b );
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inc_t rs_b = bli_obj_row_stride( b );
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dim_t pd_b = bli_obj_panel_dim( b );
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inc_t ps_b = bli_obj_panel_stride( b );
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void* buf_c = bli_obj_buffer_at_off( c );
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inc_t rs_c = bli_obj_row_stride( c );
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inc_t cs_c = bli_obj_col_stride( c );
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obj_t scalar_a;
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obj_t scalar_b;
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void* buf_alpha;
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void* buf_beta;
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FUNCPTR_T f;
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// Detach and multiply the scalars attached to A and B.
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bli_obj_scalar_detach( a, &scalar_a );
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bli_obj_scalar_detach( b, &scalar_b );
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bli_mulsc( &scalar_a, &scalar_b );
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// Grab the addresses of the internal scalar buffers for the scalar
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// merged above and the scalar attached to C.
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buf_alpha = bli_obj_internal_scalar_buffer( &scalar_b );
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buf_beta = bli_obj_internal_scalar_buffer( c );
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// Index into the type combination array to extract the correct
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// function pointer.
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f = ftypes[dt_exec];
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// Invoke the function.
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f( diagoffb,
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schema_a,
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schema_b,
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m,
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n,
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k,
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buf_alpha,
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buf_a, cs_a, pd_a, ps_a,
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buf_b, rs_b, pd_b, ps_b,
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buf_beta,
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buf_c, rs_c, cs_c,
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cntx,
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rntm,
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thread );
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}
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#undef GENTFUNC
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#define GENTFUNC( ctype, ch, varname ) \
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\
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void PASTEMAC(ch,varname) \
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( \
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doff_t diagoffb, \
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pack_t schema_a, \
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pack_t schema_b, \
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dim_t m, \
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dim_t n, \
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dim_t k, \
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void* alpha, \
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void* a, inc_t cs_a, dim_t pd_a, inc_t ps_a, \
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void* b, inc_t rs_b, dim_t pd_b, inc_t ps_b, \
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void* beta, \
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void* c, inc_t rs_c, inc_t cs_c, \
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cntx_t* cntx, \
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rntm_t* rntm, \
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thrinfo_t* jr_thread \
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) \
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{ \
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const num_t dt = PASTEMAC(ch,type); \
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\
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/* Alias some constants to simpler names. */ \
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const dim_t MR = pd_a; \
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const dim_t NR = pd_b; \
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const dim_t PACKMR = cs_a; \
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const dim_t PACKNR = rs_b; \
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\
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/* Query the context for the micro-kernel address and cast it to its
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function pointer type. */ \
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PASTECH(ch,gemm_ukr_ft) \
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gemm_ukr = bli_cntx_get_l3_vir_ukr_dt( dt, BLIS_GEMM_UKR, cntx ); \
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\
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/* Temporary C buffer for edge cases. Note that the strides of this
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temporary buffer are set so that they match the storage of the
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original C matrix. For example, if C is column-stored, ct will be
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column-stored as well. */ \
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ctype ct[ BLIS_STACK_BUF_MAX_SIZE \
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/ sizeof( ctype ) ] \
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__attribute__((aligned(BLIS_STACK_BUF_ALIGN_SIZE))); \
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const bool_t col_pref = bli_cntx_l3_vir_ukr_prefers_cols_dt( dt, BLIS_GEMM_UKR, cntx ); \
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const inc_t rs_ct = ( col_pref ? 1 : NR ); \
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const inc_t cs_ct = ( col_pref ? MR : 1 ); \
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\
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ctype* restrict one = PASTEMAC(ch,1); \
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ctype* restrict zero = PASTEMAC(ch,0); \
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ctype* restrict a_cast = a; \
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ctype* restrict b_cast = b; \
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ctype* restrict c_cast = c; \
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ctype* restrict alpha_cast = alpha; \
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ctype* restrict beta_cast = beta; \
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ctype* restrict b1; \
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ctype* restrict c1; \
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\
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doff_t diagoffb_j; \
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dim_t k_full; \
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dim_t m_iter, m_left; \
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dim_t n_iter, n_left; \
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dim_t m_cur; \
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dim_t n_cur; \
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dim_t k_b0111; \
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dim_t off_b0111; \
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dim_t i, j; \
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inc_t rstep_a; \
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inc_t cstep_b; \
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inc_t rstep_c, cstep_c; \
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inc_t istep_a; \
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inc_t istep_b; \
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inc_t off_scl; \
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inc_t ss_b_num; \
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inc_t ss_b_den; \
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inc_t ps_b_cur; \
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inc_t is_b_cur; \
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auxinfo_t aux; \
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\
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/*
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Assumptions/assertions:
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rs_a == 1
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cs_a == PACKMR
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pd_a == MR
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ps_a == stride to next micro-panel of A
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rs_b == PACKNR
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cs_b == 1
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pd_b == NR
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ps_b == stride to next micro-panel of B
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rs_c == (no assumptions)
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cs_c == (no assumptions)
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*/ \
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\
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/* Safety trap: Certain indexing within this macro-kernel does not
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work as intended if both MR and NR are odd. */ \
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if ( ( bli_is_odd( PACKMR ) && bli_is_odd( NR ) ) || \
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( bli_is_odd( PACKNR ) && bli_is_odd( MR ) ) ) bli_abort(); \
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\
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/* If any dimension is zero, return immediately. */ \
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if ( bli_zero_dim3( m, n, k ) ) return; \
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\
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/* Safeguard: If the current panel of B is entirely below its diagonal,
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it is implicitly zero. So we do nothing. */ \
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if ( bli_is_strictly_below_diag_n( diagoffb, k, n ) ) return; \
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\
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/* Compute k_full. For all trmm, k_full is simply k. This is
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needed because some parameter combinations of trmm reduce k
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to advance past zero regions in the triangular matrix, and
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when computing the imaginary stride of A (the non-triangular
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matrix), which is used by 4m1/3m1 implementations, we need
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this unreduced value of k. */ \
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k_full = k; \
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\
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/* Compute indexing scaling factor for for 4m or 3m. This is
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needed because one of the packing register blocksizes (PACKMR
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or PACKNR) is used to index into the micro-panels of the non-
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triangular matrix when computing with a diagonal-intersecting
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micro-panel of the triangular matrix. In the case of 4m or 3m,
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real values are stored in both sub-panels, and so the indexing
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needs to occur in units of real values. The value computed
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here is divided into the complex pointer offset to cause the
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pointer to be advanced by the correct value. */ \
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if ( bli_is_4mi_packed( schema_b ) || \
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bli_is_3mi_packed( schema_b ) || \
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bli_is_rih_packed( schema_b ) ) off_scl = 2; \
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else off_scl = 1; \
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\
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/* Compute the storage stride scaling. Usually this is just 1.
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However, in the case of interleaved 3m, we need to scale the
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offset by 3/2. And if we are packing real-only, imag-only, or
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summed-only, we need to scale the computed panel sizes by 1/2
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to compensate for the fact that the pointer arithmetic occurs
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in terms of complex elements rather than real elements. */ \
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if ( bli_is_3mi_packed( schema_b ) ) { ss_b_num = 3; ss_b_den = 2; } \
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else if ( bli_is_rih_packed( schema_b ) ) { ss_b_num = 1; ss_b_den = 2; } \
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else { ss_b_num = 1; ss_b_den = 1; } \
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\
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/* If there is a zero region to the left of where the diagonal of B
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intersects the top edge of the panel, adjust the pointer to C and
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treat this case as if the diagonal offset were zero. This skips over
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the region that was not packed. (Note we assume the diagonal offset
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is a multiple of MR; this assumption will hold as long as the cache
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blocksizes are each a multiple of MR and NR.) */ \
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if ( diagoffb > 0 ) \
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{ \
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j = diagoffb; \
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n = n - j; \
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diagoffb = 0; \
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c_cast = c_cast + (j )*cs_c; \
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} \
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\
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/* If there is a zero region below where the diagonal of B intersects the
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right side of the block, shrink it to prevent "no-op" iterations from
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executing. */ \
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if ( -diagoffb + n < k ) \
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{ \
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k = -diagoffb + n; \
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} \
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\
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/* Clear the temporary C buffer in case it has any infs or NaNs. */ \
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PASTEMAC(ch,set0s_mxn)( MR, NR, \
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ct, rs_ct, cs_ct ); \
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\
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/* Compute number of primary and leftover components of the m and n
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dimensions. */ \
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n_iter = n / NR; \
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n_left = n % NR; \
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\
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m_iter = m / MR; \
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m_left = m % MR; \
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\
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if ( n_left ) ++n_iter; \
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if ( m_left ) ++m_iter; \
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\
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/* Determine some increments used to step through A, B, and C. */ \
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rstep_a = ps_a; \
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\
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cstep_b = ps_b; \
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\
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rstep_c = rs_c * MR; \
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cstep_c = cs_c * NR; \
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\
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istep_a = PACKMR * k_full; \
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istep_b = PACKNR * k; \
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\
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if ( bli_is_odd( istep_a ) ) istep_a += 1; \
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if ( bli_is_odd( istep_b ) ) istep_b += 1; \
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\
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/* Save the pack schemas of A and B to the auxinfo_t object. */ \
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bli_auxinfo_set_schema_a( schema_a, &aux ); \
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bli_auxinfo_set_schema_b( schema_b, &aux ); \
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\
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/* Save the imaginary stride of A to the auxinfo_t object. */ \
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bli_auxinfo_set_is_a( istep_a, &aux ); \
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\
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b1 = b_cast; \
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c1 = c_cast; \
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\
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thrinfo_t* ir_thread = bli_thrinfo_sub_node( jr_thread ); \
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dim_t jr_num_threads = bli_thread_n_way( jr_thread ); \
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dim_t jr_thread_id = bli_thread_work_id( jr_thread ); \
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\
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/* Loop over the n dimension (NR columns at a time). */ \
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for ( j = 0; j < n_iter; ++j ) \
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{ \
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ctype* restrict a1; \
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ctype* restrict c11; \
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ctype* restrict b2; \
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\
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diagoffb_j = diagoffb - ( doff_t )j*NR; \
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\
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/* Determine the offset to and length of the panel that was packed
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so we can index into the corresponding location in A. */ \
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off_b0111 = 0; \
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k_b0111 = bli_min( k, -diagoffb_j + NR ); \
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\
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a1 = a_cast; \
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c11 = c1; \
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\
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n_cur = ( bli_is_not_edge_f( j, n_iter, n_left ) ? NR : n_left ); \
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\
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/* Initialize our next panel of B to be the current panel of B. */ \
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b2 = b1; \
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\
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/* If the current panel of B intersects the diagonal, scale C
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by beta. If it is strictly below the diagonal, scale by one.
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This allows the current macro-kernel to work for both trmm
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and trmm3. */ \
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if ( bli_intersects_diag_n( diagoffb_j, k, NR ) ) \
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{ \
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/* Compute the panel stride for the current diagonal-
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intersecting micro-panel. */ \
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is_b_cur = k_b0111 * PACKNR; \
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is_b_cur += ( bli_is_odd( is_b_cur ) ? 1 : 0 ); \
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ps_b_cur = ( is_b_cur * ss_b_num ) / ss_b_den; \
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\
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if ( bli_trmm_my_iter( j, jr_thread ) ) { \
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\
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/* Save the 4m1/3m1 imaginary stride of B to the auxinfo_t
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object. */ \
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bli_auxinfo_set_is_b( is_b_cur, &aux ); \
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\
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/* Loop over the m dimension (MR rows at a time). */ \
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for ( i = 0; i < m_iter; ++i ) \
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{ \
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if ( bli_trmm_my_iter( i, ir_thread ) ) { \
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\
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ctype* restrict a1_i; \
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ctype* restrict a2; \
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\
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m_cur = ( bli_is_not_edge_f( i, m_iter, m_left ) ? MR : m_left ); \
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\
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a1_i = a1 + ( off_b0111 * PACKMR ) / off_scl; \
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\
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/* Compute the addresses of the next panels of A and B. */ \
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a2 = a1; \
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if ( bli_is_last_iter( i, m_iter, 0, 1 ) ) \
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{ \
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a2 = a_cast; \
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b2 = b1; \
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if ( bli_is_last_iter( j, n_iter, jr_thread_id, jr_num_threads ) ) \
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b2 = b_cast; \
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} \
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\
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/* Save addresses of next panels of A and B to the auxinfo_t
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object. */ \
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bli_auxinfo_set_next_a( a2, &aux ); \
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bli_auxinfo_set_next_b( b2, &aux ); \
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\
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/* Handle interior and edge cases separately. */ \
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if ( m_cur == MR && n_cur == NR ) \
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{ \
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/* Invoke the gemm micro-kernel. */ \
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gemm_ukr \
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( \
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k_b0111, \
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alpha_cast, \
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a1_i, \
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b1, \
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beta_cast, \
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c11, rs_c, cs_c, \
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&aux, \
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cntx \
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); \
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} \
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else \
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{ \
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/* Copy edge elements of C to the temporary buffer. */ \
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PASTEMAC(ch,copys_mxn)( m_cur, n_cur, \
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c11, rs_c, cs_c, \
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ct, rs_ct, cs_ct ); \
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\
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/* Invoke the gemm micro-kernel. */ \
|
|
gemm_ukr \
|
|
( \
|
|
k_b0111, \
|
|
alpha_cast, \
|
|
a1_i, \
|
|
b1, \
|
|
beta_cast, \
|
|
ct, rs_ct, cs_ct, \
|
|
&aux, \
|
|
cntx \
|
|
); \
|
|
\
|
|
/* Copy the result to the edge of C. */ \
|
|
PASTEMAC(ch,copys_mxn)( m_cur, n_cur, \
|
|
ct, rs_ct, cs_ct, \
|
|
c11, rs_c, cs_c ); \
|
|
} \
|
|
} \
|
|
\
|
|
a1 += rstep_a; \
|
|
c11 += rstep_c; \
|
|
} \
|
|
} \
|
|
\
|
|
b1 += ps_b_cur; \
|
|
} \
|
|
else if ( bli_is_strictly_above_diag_n( diagoffb_j, k, NR ) ) \
|
|
{ \
|
|
if ( bli_trmm_my_iter( j, jr_thread ) ) { \
|
|
\
|
|
/* Save the 4m1/3m1 imaginary stride of B to the auxinfo_t
|
|
object. */ \
|
|
bli_auxinfo_set_is_b( istep_b, &aux ); \
|
|
\
|
|
/* Loop over the m dimension (MR rows at a time). */ \
|
|
for ( i = 0; i < m_iter; ++i ) \
|
|
{ \
|
|
if ( bli_trmm_my_iter( i, ir_thread ) ) { \
|
|
\
|
|
ctype* restrict a2; \
|
|
\
|
|
m_cur = ( bli_is_not_edge_f( i, m_iter, m_left ) ? MR : m_left ); \
|
|
\
|
|
/* Compute the addresses of the next panels of A and B. */ \
|
|
a2 = a1; \
|
|
if ( bli_is_last_iter( i, m_iter, 0, 1 ) ) \
|
|
{ \
|
|
a2 = a_cast; \
|
|
b2 = b1; \
|
|
if ( bli_is_last_iter( j, n_iter, jr_thread_id, jr_num_threads ) ) \
|
|
b2 = b_cast; \
|
|
} \
|
|
\
|
|
/* Save addresses of next panels of A and B to the auxinfo_t
|
|
object. */ \
|
|
bli_auxinfo_set_next_a( a2, &aux ); \
|
|
bli_auxinfo_set_next_b( b2, &aux ); \
|
|
\
|
|
/* Handle interior and edge cases separately. */ \
|
|
if ( m_cur == MR && n_cur == NR ) \
|
|
{ \
|
|
/* Invoke the gemm micro-kernel. */ \
|
|
gemm_ukr \
|
|
( \
|
|
k, \
|
|
alpha_cast, \
|
|
a1, \
|
|
b1, \
|
|
one, \
|
|
c11, rs_c, cs_c, \
|
|
&aux, \
|
|
cntx \
|
|
); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* Invoke the gemm micro-kernel. */ \
|
|
gemm_ukr \
|
|
( \
|
|
k, \
|
|
alpha_cast, \
|
|
a1, \
|
|
b1, \
|
|
zero, \
|
|
ct, rs_ct, cs_ct, \
|
|
&aux, \
|
|
cntx \
|
|
); \
|
|
\
|
|
/* Add the result to the edge of C. */ \
|
|
PASTEMAC(ch,adds_mxn)( m_cur, n_cur, \
|
|
ct, rs_ct, cs_ct, \
|
|
c11, rs_c, cs_c ); \
|
|
} \
|
|
} \
|
|
\
|
|
a1 += rstep_a; \
|
|
c11 += rstep_c; \
|
|
} \
|
|
} \
|
|
\
|
|
b1 += cstep_b; \
|
|
} \
|
|
\
|
|
c1 += cstep_c; \
|
|
} \
|
|
\
|
|
/*PASTEMAC(ch,fprintm)( stdout, "trmm_ru_ker_var2: a1", MR, k_b0111, a1, 1, MR, "%4.1f", "" );*/ \
|
|
/*PASTEMAC(ch,fprintm)( stdout, "trmm_ru_ker_var2: b1", k_b0111, NR, b1_i, NR, 1, "%4.1f", "" );*/ \
|
|
}
|
|
|
|
INSERT_GENTFUNC_BASIC0( trmm_ru_ker_var2 )
|
|
|