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matmul.c
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matmul.c
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#include "matmul.h"
int matmul_float(float_cmat matC, float_cmat matA, float_cmat matB){
if (matA.shape[1] != matB.shape[0]) {
return -1;
}
int M = matA.shape[0];
int N = matB.shape[1];
int K = matB.shape[0];
for(int i = 0; i < M; i++){
for(int j = 0; j < N; j++){
float sum = 0.0f;
for(int k = 0; k < K; k++){
sum += matA.data[i][k] * matB.data[k][j];
}
matC.data[i][j] = sum;
}
}
return 0;
}
int matmul_double(double_cmat matC, double_cmat matA, double_cmat matB){
if (matA.shape[1] != matB.shape[0]) {
return -1;
}
int M = matA.shape[0];
int N = matB.shape[1];
int K = matB.shape[0];
for(int i = 0; i < M; i++){
for(int j = 0; j < N; j++){
double sum = 0.0f;
for(int k = 0; k < K; k++){
sum += matA.data[i][k] * matB.data[k][j];
}
matC.data[i][j] = sum;
}
}
return 0;
}
int matmul_double_blas(double_cmat C, double_cmat A_slice, double_cmat B_slice) {
//printf("start matmul blas %d %d\n", A_slice.shape[0], A_slice.shape[1]);
// Check dimensions for compatibility
//if (A_slice.shape[1] != B_slice.shape[0] || A_slice.shape[0] != C.shape[0] || B_slice.shape[1] != C.shape[1]) {
// fprintf(stderr, "Matrix dimensions do not match for multiplication.\n");
// return -1;
//}
//for(int arenai=0; arenai<NS; arenai++) C.arena[arenai] = 0;
// Call dgemm
cblas_dgemm(CblasRowMajor, CblasNoTrans, CblasNoTrans,
C.shape[0], C.shape[1], A_slice.shape[1],
1.0, A_slice.data[0], A_slice.arena_shape[1],
B_slice.data[0], B_slice.arena_shape[1],
0.0, C.arena, C.arena_shape[1]);
//printf("finish matmul blas\n");
return 0;
}
int matmul_double_strassen_winograd(double_cmat matC, double_cmat matA, double_cmat matB){
/*
* matA M*K
* matB K*N
* matC M*N
* matC = matA * matB
* S1 = A21 + A22 T1 = B12 - B11
* S2 = S1 - A11 T2 = B22 - T1
* S3 = A11 - A21 T3 = B22 - B12
* S4 = A12 - S2 T4 = T2 - B21
* M1 = A11 * B11 U1 = M1 + M2
* M2 = A12 * B21 U2 = M1 + M6
* M3 = S4 * B22 U3 = U2 + M7
* M4 = A22 * T4 U4 = U2 + M5
* M5 = S1 * T1 U5 = U4 + M3
* M6 = S2 * T2 U6 = U3 - M4
* M7 = S3 * T3 U7 = U3 + M5
* C11 = U1
* C12 = U5
* C21 = U6
* C22 = U7
*/
//if (matA.shape[0] <= 1) {
// print_double_matrix(matC);
// matC.data[0][0] = matA.data[0][0] * matB.data[0][0];
// print_double_matrix(matC);
// return 0;
//}
if (!(matA.shape[0] == matA.shape[1] && matA.shape[1] == matB.shape[0] && matB.shape[0] == matB.shape[1] && matA.shape[0]%2==0)) {
return -1;
}
int N = matA.shape[0];
int II = matA.shape[0]/2;
if (N <= 4096) {
return matmul_double_blas(matC, matA, matB);
}
double_cmat A11 = slice_double_matrix(matA, pairint {0,II}, pairint {0,II});
double_cmat A12 = slice_double_matrix(matA, pairint {0,II}, pairint {II,N});
double_cmat A21 = slice_double_matrix(matA, pairint {II,N}, pairint {0,II});
double_cmat A22 = slice_double_matrix(matA, pairint {II,N}, pairint {II,N});
double_cmat B11 = slice_double_matrix(matB, pairint {0,II}, pairint {0,II});
double_cmat B12 = slice_double_matrix(matB, pairint {0,II}, pairint {II,N});
double_cmat B21 = slice_double_matrix(matB, pairint {II,N}, pairint {0,II});
double_cmat B22 = slice_double_matrix(matB, pairint {II,N}, pairint {II,N});
double_cmat C11 = slice_double_matrix(matC, pairint {0,II}, pairint {0,II});
double_cmat C12 = slice_double_matrix(matC, pairint {0,II}, pairint {II,N});
double_cmat C21 = slice_double_matrix(matC, pairint {II,N}, pairint {0,II});
double_cmat C22 = slice_double_matrix(matC, pairint {II,N}, pairint {II,N});
double_cmat S1, T1, M1, M2, M6, M7;
create_double_matrix(pairint {II,II}, &S1);
create_double_matrix(pairint {II,II}, &T1);
create_double_matrix(pairint {II,II}, &M1);
create_double_matrix(pairint {II,II}, &M2);
create_double_matrix(pairint {II,II}, &M6);
create_double_matrix(pairint {II,II}, &M7);
matmul_double_strassen_winograd(M1, A11, B11);
matmul_double_strassen_winograd(M2, A12, B21);
matadd_double(S1, A21, A22);
matsub_double(T1, B12, B11);
matmul_double_strassen_winograd(C22, S1, T1 );
matsub_double(S1, S1, A11);
matsub_double(T1, B22, T1 );
matmul_double_strassen_winograd(M6, S1, T1 );
matsub_double(T1, T1, B21);
matmul_double_strassen_winograd(C21, A22, T1 );
matsub_double(S1, A12, S1 );
matmul_double_strassen_winograd(C12, S1 , B22);
matsub_double(S1, A11, A21);
matsub_double(T1, B22, B12);
matmul_double_strassen_winograd(M7, S1, T1 );
matadd_double(C11, M1, M2);
matadd_double(M2, M1, M6);
matadd_double(M6, M2, C22);
matadd_double(C12, M6, C12);
matadd_double(M2, M2, M7);
matsub_double(C21, M2, C21);
matadd_double(C22, M2, C22);
free_double_matrix(S1);
free_double_matrix(T1);
free_double_matrix(M1);
free_double_matrix(M2);
free_double_matrix(M6);
free_double_matrix(M7);
free_double_matrix(A11);
free_double_matrix(A12);
free_double_matrix(A21);
free_double_matrix(A22);
free_double_matrix(B11);
free_double_matrix(B12);
free_double_matrix(B21);
free_double_matrix(B22);
free_double_matrix(C11);
free_double_matrix(C12);
free_double_matrix(C21);
free_double_matrix(C22);
return 0;
}
int matmul_double_recursive_bilinear(double_cmat matC, double_cmat matA, double_cmat matB){
if (!(matA.shape[0] == matA.shape[1] && matA.shape[1] == matB.shape[0] && matB.shape[0] == matB.shape[1] && matA.shape[0]%2==0)) {
return -1;
}
int N = matA.shape[0];
int II = matA.shape[0]/2;
if (N <= 4096) {
return matmul_double_blas(matC, matA, matB);
}
double_cmat A11 = slice_double_matrix(matA, pairint {0,II}, pairint {0,II});
double_cmat A12 = slice_double_matrix(matA, pairint {0,II}, pairint {II,N});
double_cmat A21 = slice_double_matrix(matA, pairint {II,N}, pairint {0,II});
double_cmat A22 = slice_double_matrix(matA, pairint {II,N}, pairint {II,N});
double_cmat B11 = slice_double_matrix(matB, pairint {0,II}, pairint {0,II});
double_cmat B12 = slice_double_matrix(matB, pairint {0,II}, pairint {II,N});
double_cmat B21 = slice_double_matrix(matB, pairint {II,N}, pairint {0,II});
double_cmat B22 = slice_double_matrix(matB, pairint {II,N}, pairint {II,N});
double_cmat C11 = slice_double_matrix(matC, pairint {0,II}, pairint {0,II});
double_cmat C12 = slice_double_matrix(matC, pairint {0,II}, pairint {II,N});
double_cmat C21 = slice_double_matrix(matC, pairint {II,N}, pairint {0,II});
double_cmat C22 = slice_double_matrix(matC, pairint {II,N}, pairint {II,N});
double_cmat S5, T5, M1, M2, M3, M4, M5, M6, M7;
create_double_matrix(pairint {II,II}, &S5);
create_double_matrix(pairint {II,II}, &T5);
create_double_matrix(pairint {II,II}, &M1);
create_double_matrix(pairint {II,II}, &M2);
create_double_matrix(pairint {II,II}, &M3);
create_double_matrix(pairint {II,II}, &M4);
create_double_matrix(pairint {II,II}, &M5);
create_double_matrix(pairint {II,II}, &M6);
create_double_matrix(pairint {II,II}, &M7);
matadd_double(S5, A21, A22);
matadd_double(T5, B21, B22);
matmul_double_schwartz2024(M5, S5, T5 );
matsub_double(S5, A22, A12);
matsub_double(T5, B22, B12);
matmul_double_schwartz2024(M6, S5, T5 );
matsub_double(S5, A22, A11);
matmul_double_schwartz2024(M7, S5, B12);
matsub_double(T5, B22, B11);
matmul_double_schwartz2024(M3, A21, T5 );
matmul_double_schwartz2024(M4, A22, B22);
matmul_double_schwartz2024(M1, A11, B11);
matmul_double_schwartz2024(M2, A12, B21);
matadd_double(C11, M1, M2);
matsub_double(C12, M5, M7);
matadd_double(C21, M3, M6);
for (int i=0; i < II; i++) {
for (int j=0; j < II; j++) {
C22.data[i][j] = M5.data[i][j] + M6.data[i][j] - M2.data[i][j] - M4.data[i][j];
}
}
free_double_matrix(S5);
free_double_matrix(T5);
free_double_matrix(M1);
free_double_matrix(M2);
free_double_matrix(M3);
free_double_matrix(M4);
free_double_matrix(M5);
free_double_matrix(M6);
free_double_matrix(M7);
free_double_matrix(A11);
free_double_matrix(A12);
free_double_matrix(A21);
free_double_matrix(A22);
free_double_matrix(B11);
free_double_matrix(B12);
free_double_matrix(B21);
free_double_matrix(B22);
free_double_matrix(C11);
free_double_matrix(C12);
free_double_matrix(C21);
free_double_matrix(C22);
return 0;
}
int matmul_double_schwartz2024(double_cmat matC, double_cmat matA, double_cmat matB){
// TODO: improve with slice contiguous
if (!(matA.shape[0] == matA.shape[1] && matA.shape[1] == matB.shape[0] && matB.shape[0] == matB.shape[1] && matA.shape[0]%2==0)) {
return -1;
}
int N = matA.shape[0];
int II = matA.shape[0]/2;
if (N <= 4096) {
return matmul_double_blas(matC, matA, matB);
}
double_cmat A11 = slice_double_matrix(matA, pairint {0,II}, pairint {0,II});
double_cmat A12 = slice_double_matrix(matA, pairint {0,II}, pairint {II,N});
double_cmat A21 = slice_double_matrix(matA, pairint {II,N}, pairint {0,II});
double_cmat A22 = slice_double_matrix(matA, pairint {II,N}, pairint {II,N});
double_cmat B11 = slice_double_matrix(matB, pairint {0,II}, pairint {0,II});
double_cmat B12 = slice_double_matrix(matB, pairint {0,II}, pairint {II,N});
double_cmat B21 = slice_double_matrix(matB, pairint {II,N}, pairint {0,II});
double_cmat B22 = slice_double_matrix(matB, pairint {II,N}, pairint {II,N});
double_cmat C11 = slice_double_matrix(matC, pairint {0,II}, pairint {0,II});
double_cmat C12 = slice_double_matrix(matC, pairint {0,II}, pairint {II,N});
double_cmat C21 = slice_double_matrix(matC, pairint {II,N}, pairint {0,II});
double_cmat C22 = slice_double_matrix(matC, pairint {II,N}, pairint {II,N});
// pa11 = a21 + a22
// pa12 = a22
// pa21 = -a11 - a12
// pa22 = a11 + a22
//
// tmp1 = -a11
// a11 = a21 + a22
// a21 = tmp1 - a12
// a12 = a22
// tmp1 = -tmp1
// a22 = tmp1 + a22
//
//
// pb11 = b11
// pb12 = b11 + b12
// pb21 = b21 - b11
// pb22 = b11 + b22
double_cmat tmp1;
double_cmat tmp2;
create_double_matrix(pairint {II,II}, &tmp1);
create_double_matrix(pairint {II,II}, &tmp2);
assign_double_clone(tmp2, A11);
matneg_double(tmp1, A11);
matadd_double(A11, A21, A22);
matsub_double(A21, tmp1, A12);
assign_double_clone(A12, A22);
matadd_double(A22, tmp2, A22);
matadd_double(B12, B11, B12);
matsub_double(B21, B21, B11);
matadd_double(B22, B11, B22);
//printf("A\n");
//print_double_matrix(matA);
//printf("B\n");
//print_double_matrix(matB);
matmul_double_recursive_bilinear(matC, matA, matB);
//printf("C\n");
//print_double_matrix(matC);
// c11 = pc21 - pc22
// c12 = -pc21
// c21 = pc11
// c22 = pc12 - pc11 - pc22
//
// tmp1 = c21
// c21 = c11
// c11 = tmp1 - c22
// c22 = c12 - c21 - c22
// c12 = -tmp1
assign_double_clone(tmp1, C21);
assign_double_clone(C21, C11);
matsub_double(C11, tmp1, C22);
for (int i=0; i < II; i++) {
for (int j=0; j < II; j++) {
C22.data[i][j] = C12.data[i][j] - C21.data[i][j] - C22.data[i][j];
}
}
matneg_double(tmp1, tmp1);
assign_double_clone(C12, tmp1);
free_double_matrix(tmp1);
free_double_matrix(tmp2);
free_double_matrix(A11);
free_double_matrix(A12);
free_double_matrix(A21);
free_double_matrix(A22);
free_double_matrix(B11);
free_double_matrix(B12);
free_double_matrix(B21);
free_double_matrix(B22);
free_double_matrix(C11);
free_double_matrix(C12);
free_double_matrix(C21);
free_double_matrix(C22);
return 0;
}
#ifdef MAIN_MATMUL
#include <time.h>
int main() {
double_cmat A, B, C, TC;
double_cmat Ac, Bc;
int N = 8192*2;
create_double_matrix(pairint {N, N}, &A);
create_double_matrix(pairint {N, N}, &B);
create_double_matrix(pairint {N, N}, &C);
create_double_matrix(pairint {N, N}, &TC);
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
A.data[i][j] = 2.0 * rand() / RAND_MAX - 1;
B.data[i][j] = 2.0 * rand() / RAND_MAX - 1;
}
}
//printf("A:\n");
//print_double_matrix(A);
//printf("B:\n");
//print_double_matrix(B);
struct timespec start, end;
double endtime;
clock_gettime(CLOCK_MONOTONIC, &start);
matmul_double_strassen_winograd(C, A, B);
clock_gettime(CLOCK_MONOTONIC, &end);
endtime = (end.tv_sec - start.tv_sec) +
(end.tv_nsec - start.tv_nsec) / 1e9;
printf("strassen winograd time: %f(s)\n", endtime);
//create_double_matrix(pairint {N, N}, &Ac);
//create_double_matrix(pairint {N, N}, &Bc);
//assign_double_clone(Ac, A);
//assign_double_clone(Bc, B);
//clock_gettime(CLOCK_MONOTONIC, &start);
//matmul_double_schwartz2024(TC, Ac, Bc);
//clock_gettime(CLOCK_MONOTONIC, &end);
//endtime = (end.tv_sec - start.tv_sec) +
// (end.tv_nsec - start.tv_nsec) / 1e9;
//printf("schwartz 2024 time: %f(s)\n", endtime);
//start = clock();
//matmul_double_sse2(C, A, B);
//end = clock();
//endtime = (double) (end - start)/CLOCKS_PER_SEC;
//printf("sse2 time: %f(s)\n", endtime);
//printf("C:\n");
//print_double_matrix(C);
clock_gettime(CLOCK_MONOTONIC, &start);
matmul_double_blas(TC, A, B);
clock_gettime(CLOCK_MONOTONIC, &end);
endtime = (end.tv_sec - start.tv_sec) +
(end.tv_nsec - start.tv_nsec) / 1e9;
printf("blas time: %f(s)\n", endtime);
//printf("TC:\n");
//print_double_matrix(TC);
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
if (fabs(C.data[i][j] - TC.data[i][j]) > 0.01) {
printf("wrong: %lf, true: %lf, at: %d-%d\n", C.data[i][j], TC.data[i][j], i, j);
}
}
}
printf("finished\n");
return 0;
}
#endif