Eigne Matrix Class Library
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GeneralMatrixMatrix_MKL.h
00001 /* 00002 Copyright (c) 2011, Intel Corporation. All rights reserved. 00003 00004 Redistribution and use in source and binary forms, with or without modification, 00005 are permitted provided that the following conditions are met: 00006 00007 * Redistributions of source code must retain the above copyright notice, this 00008 list of conditions and the following disclaimer. 00009 * Redistributions in binary form must reproduce the above copyright notice, 00010 this list of conditions and the following disclaimer in the documentation 00011 and/or other materials provided with the distribution. 00012 * Neither the name of Intel Corporation nor the names of its contributors may 00013 be used to endorse or promote products derived from this software without 00014 specific prior written permission. 00015 00016 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 00017 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 00018 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00019 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 00020 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 00021 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00022 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 00023 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00024 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00025 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00026 00027 ******************************************************************************** 00028 * Content : Eigen bindings to Intel(R) MKL 00029 * General matrix-matrix product functionality based on ?GEMM. 00030 ******************************************************************************** 00031 */ 00032 00033 #ifndef EIGEN_GENERAL_MATRIX_MATRIX_MKL_H 00034 #define EIGEN_GENERAL_MATRIX_MATRIX_MKL_H 00035 00036 namespace Eigen { 00037 00038 namespace internal { 00039 00040 /********************************************************************** 00041 * This file implements general matrix-matrix multiplication using BLAS 00042 * gemm function via partial specialization of 00043 * general_matrix_matrix_product::run(..) method for float, double, 00044 * std::complex<float> and std::complex<double> types 00045 **********************************************************************/ 00046 00047 // gemm specialization 00048 00049 #define GEMM_SPECIALIZATION(EIGTYPE, EIGPREFIX, MKLTYPE, MKLPREFIX) \ 00050 template< \ 00051 typename Index, \ 00052 int LhsStorageOrder, bool ConjugateLhs, \ 00053 int RhsStorageOrder, bool ConjugateRhs> \ 00054 struct general_matrix_matrix_product<Index,EIGTYPE,LhsStorageOrder,ConjugateLhs,EIGTYPE,RhsStorageOrder,ConjugateRhs,ColMajor> \ 00055 { \ 00056 static void run(Index rows, Index cols, Index depth, \ 00057 const EIGTYPE* _lhs, Index lhsStride, \ 00058 const EIGTYPE* _rhs, Index rhsStride, \ 00059 EIGTYPE* res, Index resStride, \ 00060 EIGTYPE alpha, \ 00061 level3_blocking<EIGTYPE, EIGTYPE>& /*blocking*/, \ 00062 GemmParallelInfo<Index>* /*info = 0*/) \ 00063 { \ 00064 using std::conj; \ 00065 \ 00066 char transa, transb; \ 00067 MKL_INT m, n, k, lda, ldb, ldc; \ 00068 const EIGTYPE *a, *b; \ 00069 MKLTYPE alpha_, beta_; \ 00070 MatrixX##EIGPREFIX a_tmp, b_tmp; \ 00071 EIGTYPE myone(1);\ 00072 \ 00073 /* Set transpose options */ \ 00074 transa = (LhsStorageOrder==RowMajor) ? ((ConjugateLhs) ? 'C' : 'T') : 'N'; \ 00075 transb = (RhsStorageOrder==RowMajor) ? ((ConjugateRhs) ? 'C' : 'T') : 'N'; \ 00076 \ 00077 /* Set m, n, k */ \ 00078 m = (MKL_INT)rows; \ 00079 n = (MKL_INT)cols; \ 00080 k = (MKL_INT)depth; \ 00081 \ 00082 /* Set alpha_ & beta_ */ \ 00083 assign_scalar_eig2mkl(alpha_, alpha); \ 00084 assign_scalar_eig2mkl(beta_, myone); \ 00085 \ 00086 /* Set lda, ldb, ldc */ \ 00087 lda = (MKL_INT)lhsStride; \ 00088 ldb = (MKL_INT)rhsStride; \ 00089 ldc = (MKL_INT)resStride; \ 00090 \ 00091 /* Set a, b, c */ \ 00092 if ((LhsStorageOrder==ColMajor) && (ConjugateLhs)) { \ 00093 Map<const MatrixX##EIGPREFIX, 0, OuterStride<> > lhs(_lhs,m,k,OuterStride<>(lhsStride)); \ 00094 a_tmp = lhs.conjugate(); \ 00095 a = a_tmp.data(); \ 00096 lda = a_tmp.outerStride(); \ 00097 } else a = _lhs; \ 00098 \ 00099 if ((RhsStorageOrder==ColMajor) && (ConjugateRhs)) { \ 00100 Map<const MatrixX##EIGPREFIX, 0, OuterStride<> > rhs(_rhs,k,n,OuterStride<>(rhsStride)); \ 00101 b_tmp = rhs.conjugate(); \ 00102 b = b_tmp.data(); \ 00103 ldb = b_tmp.outerStride(); \ 00104 } else b = _rhs; \ 00105 \ 00106 MKLPREFIX##gemm(&transa, &transb, &m, &n, &k, &alpha_, (const MKLTYPE*)a, &lda, (const MKLTYPE*)b, &ldb, &beta_, (MKLTYPE*)res, &ldc); \ 00107 }}; 00108 00109 GEMM_SPECIALIZATION(double, d, double, d) 00110 GEMM_SPECIALIZATION(float, f, float, s) 00111 GEMM_SPECIALIZATION(dcomplex, cd, MKL_Complex16, z) 00112 GEMM_SPECIALIZATION(scomplex, cf, MKL_Complex8, c) 00113 00114 } // end namespase internal 00115 00116 } // end namespace Eigen 00117 00118 #endif // EIGEN_GENERAL_MATRIX_MATRIX_MKL_H
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