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/*
* Copyright (C) 2014, The University of Texas at Austin
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of The University of Texas at Austin nor the names
* of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* Copyright (C) 2014-2015, Michael Lehn
*
* ulmBLAS adopted general ideas from BLIS. Using micro kernels from BLIS
* only requires minor modifications,
*
*/
#ifndef ULMBLAS_IMPL_LEVEL3_GEMM_TCC
#define ULMBLAS_IMPL_LEVEL3_GEMM_TCC 1
#include <ulmblas/impl/config/blocksize.h>
#include <ulmblas/impl/auxiliary/memorypool.h>
#include <ulmblas/impl/level1extensions/gescal.h>
#include <ulmblas/impl/level3/mkernel/mgemm.h>
#include <ulmblas/impl/level3/ukernel/ugemm.h>
#include <ulmblas/impl/level3/pack/gepack.h>
namespace ulmBLAS {
template <typename IndexType, typename Alpha, typename TA, typename TB,
typename Beta, typename TC>
void
gemm(IndexType m,
IndexType n,
IndexType k,
const Alpha &alpha,
bool conjA,
const TA *A,
IndexType incRowA,
IndexType incColA,
bool conjB,
const TB *B,
IndexType incRowB,
IndexType incColB,
const Beta &beta,
TC *C,
IndexType incRowC,
IndexType incColC)
{
typedef typename std::common_type<Alpha, TA, TB>::type T;
const IndexType MC = BlockSize<T>::MC;
const IndexType NC = BlockSize<T>::NC;
const IndexType KC = BlockSize<T>::KC;
const IndexType MR = BlockSizeUGemm<T>::MR;
const IndexType NR = BlockSizeUGemm<T>::NR;
const IndexType mb = (m+MC-1) / MC;
const IndexType nb = (n+NC-1) / NC;
const IndexType kb = (k+KC-1) / KC;
const IndexType mc_ = m % MC;
const IndexType nc_ = n % NC;
const IndexType kc_ = k % KC;
static MemoryPool<T> memoryPool;
if (alpha==Alpha(0) || k==0) {
gescal(m, n, beta, C, incRowC, incColC);
return;
}
T *A_ = memoryPool.allocate(MC*KC+MR);
T *B_ = memoryPool.allocate(KC*NC+NR);
for (IndexType j=0; j<nb; ++j) {
IndexType nc = (j!=nb-1 || nc_==0) ? NC : nc_;
for (IndexType l=0; l<kb; ++l) {
IndexType kc = (l!=kb-1 || kc_==0) ? KC : kc_;
Beta beta_ = (l==0) ? beta : Beta(1);
gepack_B(kc, nc, conjB,
&B[l*KC*incRowB+j*NC*incColB], incRowB, incColB,
B_);
for (IndexType i=0; i<mb; ++i) {
IndexType mc = (i!=mb-1 || mc_==0) ? MC : mc_;
gepack_A(mc, kc, conjA,
&A[i*MC*incRowA+l*KC*incColA], incRowA, incColA,
A_);
mgemm(mc, nc, kc, T(alpha), A_, B_, beta_,
&C[i*MC*incRowC+j*NC*incColC],
incRowC, incColC);
}
}
}
memoryPool.release(A_);
memoryPool.release(B_);
}
} // namespace ulmBLAS
#endif // ULMBLAS_IMPL_LEVEL3_GEMM_TCC
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