mirror of
https://github.com/amd/blis.git
synced 2026-05-04 14:31:12 +00:00
6b83273126
Details: - Replaced direct usage of _Pragma( "omp simd" ) in reference kernels with PRAGMA_SIMD, which is defined as a function of the compiler being used in a new bli_pragma_macro_defs.h file. That definition is cleared when BLIS detects that the -fopenmp-simd command line option is unsupported. Thanks to Devin Matthews and Jeff Hammond for suggestions that guided this commit. - Updated configure and bli_config.h.in so that the appropriate anchor is substituted in (when the corresponding pragma omp simd support is present).
332 lines
11 KiB
C
332 lines
11 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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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(s) of the copyright holder(s) nor the names of its
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contributors may be used to endorse or promote products derived
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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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#if 0
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// An implementation that attempts to facilitate emission of vectorized
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// instructions via constant loop bounds + #pragma omp simd directives.
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#undef GENTFUNC
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#define GENTFUNC( ctype, ch, opname, arch, suf, mr, nr ) \
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\
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void PASTEMAC3(ch,opname,arch,suf) \
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( \
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ctype* restrict a, \
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ctype* restrict b, \
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ctype* restrict c, inc_t rs_c, inc_t cs_c, \
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auxinfo_t* restrict data, \
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cntx_t* restrict cntx \
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) \
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{ \
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const inc_t rs_a = 1; \
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const inc_t cs_a = mr; \
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\
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const inc_t rs_b = nr; \
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const inc_t cs_b = 1; \
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\
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PRAGMA_SIMD \
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for ( dim_t i = 0; i < mr; ++i ) \
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{ \
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/* b1 = b1 - a10t * B0; */ \
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/* b1 = b1 / alpha11; */ \
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for ( dim_t j = 0; j < nr; ++j ) \
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{ \
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ctype beta11c = b[i*rs_b + j*cs_b]; \
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ctype rho11; \
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\
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/* beta11 = beta11 - a10t * b01; */ \
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PASTEMAC(ch,set0s)( rho11 ); \
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for ( dim_t l = 0; l < i; ++l ) \
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{ \
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PASTEMAC(ch,axpys)( a[i*rs_a + l*cs_a], \
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b[l*rs_b + j*cs_b], rho11 ); \
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} \
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PASTEMAC(ch,subs)( rho11, beta11c ); \
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\
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/* beta11 = beta11 / alpha11; */ \
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/* NOTE: The INVERSE of alpha11 (1.0/alpha11) is stored instead
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of alpha11, so we can multiply rather than divide. We store
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the inverse of alpha11 intentionally to avoid expensive
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division instructions within the micro-kernel. */ \
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PASTEMAC(ch,scals)( a[i*rs_a + i*cs_a], beta11c ); \
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\
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/* Output final result to matrix c. */ \
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PASTEMAC(ch,copys)( beta11c, c[i*rs_c + j*cs_c] ); \
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\
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/* Store the local value back to b11. */ \
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PASTEMAC(ch,copys)( beta11c, b[i*rs_b + j*cs_b] ); \
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} \
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} \
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}
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//INSERT_GENTFUNC_BASIC2( trsm_l, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX )
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GENTFUNC( float, s, trsm_l, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 16 )
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GENTFUNC( double, d, trsm_l, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 8 )
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GENTFUNC( scomplex, c, trsm_l, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 8 )
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GENTFUNC( dcomplex, z, trsm_l, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 4 )
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#undef GENTFUNC
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#define GENTFUNC( ctype, ch, opname, arch, suf, mr, nr ) \
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\
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void PASTEMAC3(ch,opname,arch,suf) \
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( \
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ctype* restrict a, \
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ctype* restrict b, \
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ctype* restrict c, inc_t rs_c, inc_t cs_c, \
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auxinfo_t* restrict data, \
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cntx_t* restrict cntx \
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) \
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{ \
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const inc_t rs_a = 1; \
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const inc_t cs_a = mr; \
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\
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const inc_t rs_b = nr; \
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const inc_t cs_b = 1; \
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\
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PRAGMA_SIMD \
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for ( dim_t iter = 0; iter < mr; ++iter ) \
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{ \
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dim_t i = mr - iter - 1; \
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\
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/* b1 = b1 - a12t * B2; */ \
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/* b1 = b1 / alpha11; */ \
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for ( dim_t j = 0; j < nr; ++j ) \
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{ \
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ctype beta11c = b[i*rs_b + j*cs_b]; \
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ctype rho11; \
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\
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/* beta11 = beta11 - a12t * b21; */ \
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PASTEMAC(ch,set0s)( rho11 ); \
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for ( dim_t l = 0; l < iter; ++l ) \
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{ \
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PASTEMAC(ch,axpys)( a[i*rs_a + (i+1+l)*cs_a], \
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b[(i+1+l)*rs_b + j*cs_b], rho11 ); \
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} \
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PASTEMAC(ch,subs)( rho11, beta11c ); \
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\
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/* beta11 = beta11 / alpha11; */ \
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/* NOTE: The INVERSE of alpha11 (1.0/alpha11) is stored instead
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of alpha11, so we can multiply rather than divide. We store
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the inverse of alpha11 intentionally to avoid expensive
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division instructions within the micro-kernel. */ \
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PASTEMAC(ch,scals)( a[i*rs_a + i*cs_a], beta11c ); \
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\
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/* Output final result to matrix c. */ \
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PASTEMAC(ch,copys)( beta11c, c[i*rs_c + j*cs_c] ); \
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\
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/* Store the local value back to b11. */ \
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PASTEMAC(ch,copys)( beta11c, b[i*rs_b + j*cs_b] ); \
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} \
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} \
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}
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//INSERT_GENTFUNC_BASIC2( trsm_u, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX )
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GENTFUNC( float, s, trsm_u, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 16 )
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GENTFUNC( double, d, trsm_u, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 8 )
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GENTFUNC( scomplex, c, trsm_u, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 8 )
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GENTFUNC( dcomplex, z, trsm_u, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 4 )
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#else
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// An implementation that uses variable loop bounds (queried from the context)
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// and makes no use of #pragma omp simd.
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#undef GENTFUNC
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#define GENTFUNC( ctype, ch, opname, arch, suf ) \
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\
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void PASTEMAC3(ch,opname,arch,suf) \
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( \
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ctype* restrict a, \
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ctype* restrict b, \
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ctype* restrict c, inc_t rs_c, inc_t cs_c, \
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auxinfo_t* restrict data, \
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cntx_t* restrict cntx \
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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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const dim_t mr = bli_cntx_get_blksz_def_dt( dt, BLIS_MR, cntx ); \
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const dim_t nr = bli_cntx_get_blksz_def_dt( dt, BLIS_NR, cntx ); \
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\
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const inc_t packmr = bli_cntx_get_blksz_max_dt( dt, BLIS_MR, cntx ); \
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const inc_t packnr = bli_cntx_get_blksz_max_dt( dt, BLIS_NR, cntx ); \
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\
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const dim_t m = mr; \
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const dim_t n = nr; \
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\
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const inc_t rs_a = 1; \
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const inc_t cs_a = packmr; \
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\
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const inc_t rs_b = packnr; \
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const inc_t cs_b = 1; \
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\
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dim_t iter, i, j, l; \
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dim_t n_behind; \
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\
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for ( iter = 0; iter < m; ++iter ) \
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{ \
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i = iter; \
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n_behind = i; \
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\
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ctype* restrict alpha11 = a + (i )*rs_a + (i )*cs_a; \
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ctype* restrict a10t = a + (i )*rs_a + (0 )*cs_a; \
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ctype* restrict B0 = b + (0 )*rs_b + (0 )*cs_b; \
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ctype* restrict b1 = b + (i )*rs_b + (0 )*cs_b; \
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\
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/* b1 = b1 - a10t * B0; */ \
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/* b1 = b1 / alpha11; */ \
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for ( j = 0; j < n; ++j ) \
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{ \
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ctype* restrict b01 = B0 + (0 )*rs_b + (j )*cs_b; \
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ctype* restrict beta11 = b1 + (0 )*rs_b + (j )*cs_b; \
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ctype* restrict gamma11 = c + (i )*rs_c + (j )*cs_c; \
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ctype beta11c = *beta11; \
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ctype rho11; \
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\
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/* beta11 = beta11 - a10t * b01; */ \
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PASTEMAC(ch,set0s)( rho11 ); \
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for ( l = 0; l < n_behind; ++l ) \
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{ \
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ctype* restrict alpha10 = a10t + (l )*cs_a; \
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ctype* restrict beta01 = b01 + (l )*rs_b; \
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\
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PASTEMAC(ch,axpys)( *alpha10, *beta01, rho11 ); \
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} \
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PASTEMAC(ch,subs)( rho11, beta11c ); \
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\
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/* beta11 = beta11 / alpha11; */ \
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/* NOTE: The INVERSE of alpha11 (1.0/alpha11) is stored instead
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of alpha11, so we can multiply rather than divide. We store
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the inverse of alpha11 intentionally to avoid expensive
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division instructions within the micro-kernel. */ \
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PASTEMAC(ch,scals)( *alpha11, beta11c ); \
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\
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/* Output final result to matrix c. */ \
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PASTEMAC(ch,copys)( beta11c, *gamma11 ); \
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\
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/* Store the local value back to b11. */ \
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PASTEMAC(ch,copys)( beta11c, *beta11 ); \
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} \
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} \
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}
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INSERT_GENTFUNC_BASIC2( trsm_l, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX )
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#undef GENTFUNC
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#define GENTFUNC( ctype, ch, opname, arch, suf ) \
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\
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void PASTEMAC3(ch,opname,arch,suf) \
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( \
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ctype* restrict a, \
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ctype* restrict b, \
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ctype* restrict c, inc_t rs_c, inc_t cs_c, \
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auxinfo_t* restrict data, \
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cntx_t* restrict cntx \
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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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const dim_t mr = bli_cntx_get_blksz_def_dt( dt, BLIS_MR, cntx ); \
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const dim_t nr = bli_cntx_get_blksz_def_dt( dt, BLIS_NR, cntx ); \
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\
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const inc_t packmr = bli_cntx_get_blksz_max_dt( dt, BLIS_MR, cntx ); \
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const inc_t packnr = bli_cntx_get_blksz_max_dt( dt, BLIS_NR, cntx ); \
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\
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const dim_t m = mr; \
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const dim_t n = nr; \
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\
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const inc_t rs_a = 1; \
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const inc_t cs_a = packmr; \
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\
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const inc_t rs_b = packnr; \
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const inc_t cs_b = 1; \
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\
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dim_t iter, i, j, l; \
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dim_t n_behind; \
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\
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for ( iter = 0; iter < m; ++iter ) \
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{ \
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i = m - iter - 1; \
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n_behind = iter; \
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\
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ctype* restrict alpha11 = a + (i )*rs_a + (i )*cs_a; \
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ctype* restrict a12t = a + (i )*rs_a + (i+1)*cs_a; \
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ctype* restrict b1 = b + (i )*rs_b + (0 )*cs_b; \
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ctype* restrict B2 = b + (i+1)*rs_b + (0 )*cs_b; \
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\
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/* b1 = b1 - a12t * B2; */ \
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/* b1 = b1 / alpha11; */ \
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for ( j = 0; j < n; ++j ) \
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{ \
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ctype* restrict beta11 = b1 + (0 )*rs_b + (j )*cs_b; \
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ctype* restrict b21 = B2 + (0 )*rs_b + (j )*cs_b; \
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ctype* restrict gamma11 = c + (i )*rs_c + (j )*cs_c; \
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ctype beta11c = *beta11; \
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ctype rho11; \
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\
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/* beta11 = beta11 - a12t * b21; */ \
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PASTEMAC(ch,set0s)( rho11 ); \
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for ( l = 0; l < n_behind; ++l ) \
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{ \
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ctype* restrict alpha12 = a12t + (l )*cs_a; \
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ctype* restrict beta21 = b21 + (l )*rs_b; \
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\
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PASTEMAC(ch,axpys)( *alpha12, *beta21, rho11 ); \
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} \
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PASTEMAC(ch,subs)( rho11, beta11c ); \
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\
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/* beta11 = beta11 / alpha11; */ \
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/* NOTE: The INVERSE of alpha11 (1.0/alpha11) is stored instead
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of alpha11, so we can multiply rather than divide. We store
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the inverse of alpha11 intentionally to avoid expensive
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division instructions within the micro-kernel. */ \
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PASTEMAC(ch,scals)( *alpha11, beta11c ); \
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\
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/* Output final result to matrix c. */ \
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PASTEMAC(ch,copys)( beta11c, *gamma11 ); \
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\
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/* Store the local value back to b11. */ \
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PASTEMAC(ch,copys)( beta11c, *beta11 ); \
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} \
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} \
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}
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INSERT_GENTFUNC_BASIC2( trsm_u, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX )
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#endif
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