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atomic_matrix_mul.hpp.xml @upstream/2015.00.00.7 — raw · history · blame
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 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528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 | <?xml version='1.0'?> <html xmlns='http://www.w3.org/1999/xhtml' xmlns:math='http://www.w3.org/1998/Math/MathML' > <head> <title>Matrix Multiply as an Atomic Operation</title> <meta http-equiv='Content-Type' content='text/html' charset='utf-8'/> <meta name="description" id="description" content="Matrix Multiply as an Atomic Operation"/> <meta name="keywords" id="keywords" content=" matrix multiply as an atomic operation start class definition constructor left operand element index right result forward multipliy reverse for_sparse_jac rev_sparse_jac rev_sparse_hes end "/> <style type='text/css'> body { color : black } body { background-color : white } A:link { color : blue } A:visited { color : purple } A:active { color : purple } </style> <script type='text/javascript' language='JavaScript' src='_atomic_matrix_mul.hpp_xml.js'> </script> </head> <body> <table><tr> <td> <a href="http://www.coin-or.org/CppAD/" target="_top"><img border="0" src="_image.gif"/></a> </td> <td><a href="atomic_mat_mul.cpp.xml" target="_top">Prev</a> </td><td><a href="boolvalued.xml" target="_top">Next</a> </td><td> <select onchange='choose_across0(this)'> <option>Index-></option> <option>contents</option> <option>reference</option> <option>index</option> <option>search</option> <option>external</option> </select> </td> <td> <select onchange='choose_up0(this)'> <option>Up-></option> <option>CppAD</option> <option>AD</option> <option>ADValued</option> <option>atomic</option> <option>atomic_base</option> <option>atomic_mat_mul.cpp</option> <option>atomic_matrix_mul.hpp</option> </select> </td> <td> <select onchange='choose_down3(this)'> <option>atomic-></option> <option>checkpoint</option> <option>atomic_base</option> </select> </td> <td> <select onchange='choose_down2(this)'> <option>atomic_base-></option> <option>atomic_ctor</option> <option>atomic_option</option> <option>atomic_afun</option> <option>atomic_forward</option> <option>atomic_reverse</option> <option>atomic_for_sparse_jac</option> <option>atomic_rev_sparse_jac</option> <option>atomic_rev_sparse_hes</option> <option>atomic_base_clear</option> <option>atomic_get_started.cpp</option> <option>atomic_norm_sq.cpp</option> <option>atomic_reciprocal.cpp</option> <option>atomic_tangent.cpp</option> <option>atomic_hes_sparse.cpp</option> <option>atomic_mat_mul.cpp</option> </select> </td> <td> <select onchange='choose_down1(this)'> <option>atomic_mat_mul.cpp-></option> <option>atomic_matrix_mul.hpp</option> </select> </td> <td>atomic_matrix_mul.hpp</td> <td> <select onchange='choose_current0(this)'> <option>Headings-></option> <option>Start Class Definition</option> <option>Constructor</option> <option>Left Operand Element Index</option> <option>Right Operand Element Index</option> <option>Result Element Index</option> <option>Forward Matrix Multipliy</option> <option>Reverse Matrix Multipliy</option> <option>forward</option> <option>reverse</option> <option>for_sparse_jac</option> <option>rev_sparse_jac</option> <option>rev_sparse_hes</option> <option>End Class Definition</option> </select> </td> </tr></table><br/> <center><b><big><big>Matrix Multiply as an Atomic Operation</big></big></b></center> <br/> <b><big><a name="Start Class Definition" id="Start Class Definition">Start Class Definition</a></big></b> <code><font color='blue'><pre style='display:inline'> # include <cppad/cppad.hpp> namespace { // Begin empty namespace using CppAD::vector; // void my_union( std::set<size_t>& result , const std::set<size_t>& left , const std::set<size_t>& right ) { std::set<size_t> temp; std::set_union( left.begin() , left.end() , right.begin() , right.end() , std::inserter(temp, temp.begin()) ); result.swap(temp); } // // matrix result = left * right class matrix_mul : public CppAD::atomic_base<double> { </pre></font></code> <br/> <br/> <b><big><a name="Constructor" id="Constructor">Constructor</a></big></b> <code><font color='blue'><pre style='display:inline'> private: // number of rows in left operand and in the result const size_t nr_result_; // number of columns in left operand and rows in right operand const size_t n_middle_; // number of columns in right operand and in the result const size_t nc_result_; // dimension of the domain space const size_t n_; // dimension of the range space # ifndef NDEBUG const size_t m_; # endif public: // --------------------------------------------------------------------- // constructor matrix_mul(size_t nr_result, size_t n_middle, size_t nc_result) : CppAD::atomic_base<double>("matrix_mul"), nr_result_(nr_result) , n_middle_(n_middle) , nc_result_(nc_result) , n_( nr_result * n_middle + n_middle * nc_result ) # ifndef NDEBUG , m_( n_middle * nc_result ) # endif { } private: </pre></font></code> <br/> <br/> <b><big><a name="Left Operand Element Index" id="Left Operand Element Index">Left Operand Element Index</a></big></b> <code><font color='blue'><pre style='display:inline'> // left matrix element index in the taylor coefficient vector tx. size_t left( size_t i , // left matrix row index size_t j , // left matrix column index size_t k , // Taylor coeffocient order size_t nk ) // number of Taylor coefficients in tx { assert( i < nr_result_ ); assert( j < n_middle_ ); return (i * n_middle_ + j) * nk + k; } </pre></font></code> <br/> <br/> <b><big><a name="Right Operand Element Index" id="Right Operand Element Index">Right Operand Element Index</a></big></b> <code><font color='blue'><pre style='display:inline'> // right matrix element index in the taylor coefficient vector tx. size_t right( size_t i , // right matrix row index size_t j , // right matrix column index size_t k , // Taylor coeffocient order size_t nk ) // number of Taylor coefficients in tx { assert( i < n_middle_ ); assert( j < nc_result_ ); size_t offset = nr_result_ * n_middle_; return (offset + i * nc_result_ + j) * nk + k; } </pre></font></code> <br/> <br/> <b><big><a name="Result Element Index" id="Result Element Index">Result Element Index</a></big></b> <code><font color='blue'><pre style='display:inline'> // result matrix element index in the taylor coefficient vector ty. size_t result( size_t i , // result matrix row index size_t j , // result matrix column index size_t k , // Taylor coeffocient order size_t nk ) // number of Taylor coefficients in ty { assert( i < nr_result_ ); assert( j < nc_result_ ); return (i * nc_result_ + j) * nk + k; } </pre></font></code> <br/> <br/> <b><big><a name="Forward Matrix Multipliy" id="Forward Matrix Multipliy">Forward Matrix Multipliy</a></big></b> <code><font color='blue'><pre style='display:inline'> // Forward mode multiply Taylor coefficients in tx and sum into ty // (for one pair of left and right orders) void forward_multiply( size_t k_left , // order for left coefficients size_t k_right , // order for right coefficients const vector<double>& tx , // domain space Taylor coefficients vector<double>& ty ) // range space Taylor coefficients { size_t nk = tx.size() / n_; assert( nk == ty.size() / m_ ); // size_t k_result = k_left + k_right; assert( k_result < nk ); // for(size_t i = 0; i < nr_result_; i++) { for(size_t j = 0; j < nc_result_; j++) { double sum = 0.0; for(size_t ell = 0; ell < n_middle_; ell++) { size_t i_left = left(i, ell, k_left, nk); size_t i_right = right(ell, j, k_right, nk); sum += tx[i_left] * tx[i_right]; } size_t i_result = result(i, j, k_result, nk); ty[i_result] += sum; } } } </pre></font></code> <br/> <br/> <b><big><a name="Reverse Matrix Multipliy" id="Reverse Matrix Multipliy">Reverse Matrix Multipliy</a></big></b> <code><font color='blue'><pre style='display:inline'> // Reverse mode partials of Taylor coefficients and sum into px // (for one pair of left and right orders) void reverse_multiply( size_t k_left , // order for left coefficients size_t k_right , // order for right coefficients const vector<double>& tx , // domain space Taylor coefficients const vector<double>& ty , // range space Taylor coefficients vector<double>& px , // partials w.r.t. tx const vector<double>& py ) // partials w.r.t. ty { size_t nk = tx.size() / n_; assert( nk == ty.size() / m_ ); assert( tx.size() == px.size() ); assert( ty.size() == py.size() ); // size_t k_result = k_left + k_right; assert( k_result < nk ); // for(size_t i = 0; i < nr_result_; i++) { for(size_t j = 0; j < nc_result_; j++) { size_t i_result = result(i, j, k_result, nk); for(size_t ell = 0; ell < n_middle_; ell++) { size_t i_left = left(i, ell, k_left, nk); size_t i_right = right(ell, j, k_right, nk); // sum += tx[i_left] * tx[i_right]; px[i_left] += tx[i_right] * py[i_result]; px[i_right] += tx[i_left] * py[i_result]; } } } return; } </pre></font></code> <br/> <br/> <b><big><a name="forward" id="forward">forward</a></big></b> <code><font color='blue'><pre style='display:inline'> // forward mode routine called by CppAD bool forward( size_t q , size_t p , const vector<bool>& vx , vector<bool>& vy , const vector<double>& tx , vector<double>& ty ) { size_t p1 = p + 1; assert( vx.size() == 0 || n_ == vx.size() ); assert( vx.size() == 0 || m_ == vy.size() ); assert( n_ * p1 == tx.size() ); assert( m_ * p1 == ty.size() ); size_t i, j, ell; // check if we are computing vy information if( vx.size() > 0 ) { size_t nk = 1; size_t k = 0; for(i = 0; i < nr_result_; i++) { for(j = 0; j < nc_result_; j++) { bool var = false; for(ell = 0; ell < n_middle_; ell++) { size_t i_left = left(i, ell, k, nk); size_t i_right = right(ell, j, k, nk); bool nz_left = vx[i_left] |(tx[i_left] != 0.); bool nz_right = vx[i_right]|(tx[i_right] != 0.); // if not multiplying by the constant zero if( nz_left & nz_right ) var |= vx[i_left] | vx[i_right]; } size_t i_result = result(i, j, k, nk); vy[i_result] = var; } } } // initialize result as zero size_t k; for(i = 0; i < nr_result_; i++) { for(j = 0; j < nc_result_; j++) { for(k = q; k <= p; k++) ty[ result(i, j, k, p1) ] = 0.0; } } for(k = q; k <= p; k++) { // sum the produces that result in order k for(ell = 0; ell <= k; ell++) forward_multiply(ell, k - ell, tx, ty); } // all orders are implented, so always return true return true; } </pre></font></code> <br/> <br/> <b><big><a name="reverse" id="reverse">reverse</a></big></b> <code><font color='blue'><pre style='display:inline'> // reverse mode routine called by CppAD virtual bool reverse( size_t p , const vector<double>& tx , const vector<double>& ty , vector<double>& px , const vector<double>& py ) { size_t p1 = p + 1; assert( n_ * p1 == tx.size() ); assert( m_ * p1 == ty.size() ); assert( px.size() == tx.size() ); assert( py.size() == ty.size() ); // initialize summation for(size_t i = 0; i < px.size(); i++) px[i] = 0.0; // number of orders to differentiate size_t k = p1; while(k--) { // differentiate the produces that result in order k for(size_t ell = 0; ell <= k; ell++) reverse_multiply(ell, k - ell, tx, ty, px, py); } // all orders are implented, so always return true return true; } </pre></font></code> <br/> <br/> <b><big><a name="for_sparse_jac" id="for_sparse_jac">for_sparse_jac</a></big></b> <code><font color='blue'><pre style='display:inline'> // forward Jacobian sparsity routine called by CppAD virtual bool for_sparse_jac( size_t q , const vector<bool>& r , vector<bool>& s ) { assert( n_ * q == r.size() ); assert( m_ * q == s.size() ); size_t p; // sparsity for S(x) = f'(x) * R size_t nk = 1; size_t k = 0; for(size_t i = 0; i < nr_result_; i++) { for(size_t j = 0; j < nc_result_; j++) { size_t i_result = result(i, j, k, nk); for(p = 0; p < q; p++) s[i_result * q + p] = false; for(size_t ell = 0; ell < n_middle_; ell++) { size_t i_left = left(i, ell, k, nk); size_t i_right = right(ell, j, k, nk); for(p = 0; p < q; p++) { s[i_result * q + p] |= r[i_left * q + p ]; s[i_result * q + p] |= r[i_right * q + p ]; } } } } return true; } virtual bool for_sparse_jac( size_t q , const vector< std::set<size_t> >& r , vector< std::set<size_t> >& s ) { assert( n_ == r.size() ); assert( m_ == s.size() ); // sparsity for S(x) = f'(x) * R size_t nk = 1; size_t k = 0; for(size_t i = 0; i < nr_result_; i++) { for(size_t j = 0; j < nc_result_; j++) { size_t i_result = result(i, j, k, nk); s[i_result].clear(); for(size_t ell = 0; ell < n_middle_; ell++) { size_t i_left = left(i, ell, k, nk); size_t i_right = right(ell, j, k, nk); // my_union( s[i_result], s[i_result], r[i_left] ); my_union( s[i_result], s[i_result], r[i_right] ); } } } return true; } </pre></font></code> <br/> <br/> <b><big><a name="rev_sparse_jac" id="rev_sparse_jac">rev_sparse_jac</a></big></b> <code><font color='blue'><pre style='display:inline'> // reverse Jacobian sparsity routine called by CppAD virtual bool rev_sparse_jac( size_t q , const vector<bool>& rt , vector<bool>& st ) { assert( n_ * q == st.size() ); assert( m_ * q == rt.size() ); size_t i, j, p; // initialize for(i = 0; i < n_; i++) { for(p = 0; p < q; p++) st[ i * q + p ] = false; } // sparsity for S(x)^T = f'(x)^T * R^T size_t nk = 1; size_t k = 0; for(i = 0; i < nr_result_; i++) { for(j = 0; j < nc_result_; j++) { size_t i_result = result(i, j, k, nk); for(size_t ell = 0; ell < n_middle_; ell++) { size_t i_left = left(i, ell, k, nk); size_t i_right = right(ell, j, k, nk); for(p = 0; p < q; p++) { st[i_left * q + p] |= rt[i_result * q + p]; st[i_right* q + p] |= rt[i_result * q + p]; } } } } return true; } virtual bool rev_sparse_jac( size_t q , const vector< std::set<size_t> >& rt , vector< std::set<size_t> >& st ) { assert( n_ == st.size() ); assert( m_ == rt.size() ); size_t i, j; // initialize for(i = 0; i < n_; i++) st[i].clear(); // sparsity for S(x)^T = f'(x)^T * R^T size_t nk = 1; size_t k = 0; for(i = 0; i < nr_result_; i++) { for(j = 0; j < nc_result_; j++) { size_t i_result = result(i, j, k, nk); for(size_t ell = 0; ell < n_middle_; ell++) { size_t i_left = left(i, ell, k, nk); size_t i_right = right(ell, j, k, nk); // my_union(st[i_left], st[i_left], rt[i_result]); my_union(st[i_right], st[i_right], rt[i_result]); } } } return true; } </pre></font></code> <br/> <br/> <b><big><a name="rev_sparse_hes" id="rev_sparse_hes">rev_sparse_hes</a></big></b> <code><font color='blue'><pre style='display:inline'> // reverse Hessian sparsity routine called by CppAD virtual bool rev_sparse_hes( const vector<bool>& vx, const vector<bool>& s , vector<bool>& t , size_t q , const vector< std::set<size_t> >& r , const vector< std::set<size_t> >& u , vector< std::set<size_t> >& v ) { size_t n = vx.size(); assert( t.size() == n ); assert( r.size() == n ); assert( v.size() == n ); # ifndef NDEBUG size_t m = s.size(); assert( u.size() == m ); # endif size_t i, j; // // initilaize sparsity patterns as false for(j = 0; j < n; j++) { t[j] = false; v[j].clear(); } size_t nk = 1; size_t k = 0; for(i = 0; i < nr_result_; i++) { for(j = 0; j < nc_result_; j++) { size_t i_result = result(i, j, k, nk); for(size_t ell = 0; ell < n_middle_; ell++) { size_t i_left = left(i, ell, k, nk); size_t i_right = right(ell, j, k, nk); // // Compute sparsity for T(x) = S(x) * f'(x). // We need not use vx with f'(x) back propagation. t[i_left] |= s[i_result]; t[i_right] |= s[i_result]; // V(x) = f'(x)^T * U(x) + S(x) * f''(x) * R // U(x) = g''(y) * f'(x) * R // S(x) = g'(y) // back propagate f'(x)^T * U(x) // (no need to use vx with f'(x) propogation) my_union(v[i_left], v[i_left], u[i_result] ); my_union(v[i_right], v[i_right], u[i_result] ); // back propagate S(x) * f''(x) * R // (here is where we must check for cross terms) if( s[i_result] & vx[i_left] & vx[i_right] ) { my_union(v[i_left], v[i_left], r[i_right] ); my_union(v[i_right], v[i_right], r[i_left] ); } } } } return true; } virtual bool rev_sparse_hes( const vector<bool>& vx, const vector<bool>& s , vector<bool>& t , size_t q , const vector<bool>& r , const vector<bool>& u , vector<bool>& v ) { size_t n = vx.size(); assert( t.size() == n ); assert( r.size() == n * q ); assert( v.size() == n * q ); # ifndef NDEBUG size_t m = s.size(); assert( u.size() == m * q ); # endif size_t i, j, p; // // initilaize sparsity patterns as false for(j = 0; j < n; j++) { t[j] = false; for(p = 0; p < q; p++) v[j * q + p] = false; } size_t nk = 1; size_t k = 0; for(i = 0; i < nr_result_; i++) { for(j = 0; j < nc_result_; j++) { size_t i_result = result(i, j, k, nk); for(size_t ell = 0; ell < n_middle_; ell++) { size_t i_left = left(i, ell, k, nk); size_t i_right = right(ell, j, k, nk); // // Compute sparsity for T(x) = S(x) * f'(x). // We so not need to use vx with f'(x) propagation. t[i_left] |= s[i_result]; t[i_right] |= s[i_result]; // V(x) = f'(x)^T * U(x) + S(x) * f''(x) * R // U(x) = g''(y) * f'(x) * R // S(x) = g'(y) // back propagate f'(x)^T * U(x) // (no need to use vx with f'(x) propogation) for(p = 0; p < q; p++) { v[ i_left * q + p] |= u[ i_result * q + p]; v[ i_right * q + p] |= u[ i_result * q + p]; } // back propagate S(x) * f''(x) * R // (here is where we must check for cross terms) if( s[i_result] & vx[i_left] & vx[i_right] ) { for(p = 0; p < q; p++) { v[i_left * q + p] |= r[i_right * q + p]; v[i_right * q + p] |= r[i_left * q + p]; } } } } } return true; } </pre></font></code> <br/> <br/> <b><big><a name="End Class Definition" id="End Class Definition">End Class Definition</a></big></b> <code><font color='blue'><pre style='display:inline'> }; // End of matrix_mul class } // End empty namespace </pre></font></code> <hr/>Input File: cppad/example/matrix_mul.hpp </body> </html> |