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sgemm-openmp j3.c
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sgemm-openmp j3.c
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#include <nmmintrin.h>
#include <omp.h>
void sgemm( int m, int n, float *A, float *C )
{
__m128 a;
__m128 a1;
__m128 a2;
__m128 a3;
__m128 a4;
__m128 a5;
__m128 b;
__m128 b1;
__m128 b2;
__m128 b3;
__m128 b4;
__m128 b5;
__m128 b6;
__m128 b7;
__m128 b8;
__m128 b9;
__m128 b10;
__m128 b11;
__m128 b12;
/*
__m128 b13;
__m128 b14;
__m128 b15;
__m128 b16;
__m128 b17;
__m128 b18;
__m128 b19;
__m128 b20;
*/
__m128 c;
__m128 c1;
__m128 c2;
__m128 c3;
__m128 c4;
int i, j, k, l;
int mod = m%4;
int end = m/4 * 4;
int total = n*m;
float num[4];
float* A_address;
float* C_address;
int m3 = 3 * m;
int m2 = 2 * m;
int end1 = total/m3 * m3;
#pragma omp parallel for private(a, a1, a2, a3, b, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12, c, c1, c2, c3, c4, i, j, k, l)
for( i = 0; i < end; i += 4 ){
for( k = 0; k < end; k += 4 ) {
c1 = _mm_setzero_ps();
c2 = _mm_setzero_ps();
c3 = _mm_setzero_ps();
c4 = _mm_setzero_ps();
float* A_address1 = A + i;
float* A_address2 = A + k;
float* A_address21 = A + k + 1;
for( j = 0; j < end1; j += m3, A_address1 += m3, A_address2 += m3, A_address21 += m3){
a1 = _mm_loadu_ps(A_address1);
a2 = _mm_loadu_ps(A_address1 + m);
a3 = _mm_loadu_ps(A_address1 + m2);
b1 = _mm_load1_ps(A_address2);
b2 = _mm_load1_ps(A_address2 + m);
b3 = _mm_load1_ps(A_address2 + m2);
/*
b4 = _mm_load1_ps(A_address2 + m3);
b5 = _mm_load1_ps(A_address2 + m4);
*/
b4 = _mm_load1_ps(A_address21);
b5 = _mm_load1_ps(A_address21 + m);
b6 = _mm_load1_ps(A_address21 + m2);
/*
b9 = _mm_load1_ps(A_address21 + m3);
b10 = _mm_load1_ps(A_address21 + m4);
*/
b7 = _mm_load1_ps(A + k + 2 + j);
b8 = _mm_load1_ps(A + k + 2 + j + m);
b9 = _mm_load1_ps(A + k + 2 + j + m2);
/*
b14 = _mm_load1_ps(A + k + 2 + j + m3);
b15 = _mm_load1_ps(A + k + 2 + j + m4);
*/
b10 = _mm_load1_ps(A + k + 3 + j);
b11 = _mm_load1_ps(A + k + 3 + j + m);
b12 = _mm_load1_ps(A + k + 3 + j + m2);
/*
b19 = _mm_load1_ps(A + k + 3 + j + m3);
b20 = _mm_load1_ps(A + k + 3 + j + m4);
*/
c1 = _mm_add_ps(c1, _mm_mul_ps(a1, b1));
c1 = _mm_add_ps(c1, _mm_mul_ps(a2, b2));
c1 = _mm_add_ps(c1, _mm_mul_ps(a3, b3));
/*
c1 = _mm_add_ps(c1, _mm_mul_ps(a4, b4));
c1 = _mm_add_ps(c1, _mm_mul_ps(a5, b5));
*/
c2 = _mm_add_ps(c2, _mm_mul_ps(a1, b4));
c2 = _mm_add_ps(c2, _mm_mul_ps(a2, b5));
c2 = _mm_add_ps(c2, _mm_mul_ps(a3, b6));
/*
c2 = _mm_add_ps(c2, _mm_mul_ps(a4, b9));
c2 = _mm_add_ps(c2, _mm_mul_ps(a5, b10));
*/
c3 = _mm_add_ps(c3, _mm_mul_ps(a1, b7));
c3 = _mm_add_ps(c3, _mm_mul_ps(a2, b8));
c3 = _mm_add_ps(c3, _mm_mul_ps(a3, b9));
/*
c3 = _mm_add_ps(c3, _mm_mul_ps(a4, b14));
c3 = _mm_add_ps(c3, _mm_mul_ps(a5, b15));
*/
c4 = _mm_add_ps(c4, _mm_mul_ps(a1, b10));
c4 = _mm_add_ps(c4, _mm_mul_ps(a2, b11));
c4 = _mm_add_ps(c4, _mm_mul_ps(a3, b12));
/*
c4 = _mm_add_ps(c4, _mm_mul_ps(a4, b19));
c4 = _mm_add_ps(c4, _mm_mul_ps(a5, b20));
*/
}
for( j = end1; j < total; j += m){
a = _mm_loadu_ps(A + i + j);
b1 = _mm_load1_ps(A + k + j);
b2 = _mm_load1_ps(A + k + 1 + j);
b3 = _mm_load1_ps(A + k + 2 + j);
b4 = _mm_load1_ps(A + k + 3 + j);
c1 = _mm_add_ps(c1, _mm_mul_ps(a, b1));
c2 = _mm_add_ps(c2, _mm_mul_ps(a, b2));
c3 = _mm_add_ps(c3, _mm_mul_ps(a, b3));
c4 = _mm_add_ps(c4, _mm_mul_ps(a, b4));
}
_mm_storeu_ps(C + i + (k)*m, c1);
_mm_storeu_ps(C + i + (k+1)*m, c2);
_mm_storeu_ps(C + i + (k+2)*m, c3);
_mm_storeu_ps(C + i + (k+3)*m, c4);
}
for(k = end; k < m; k++){
float* A_address1 = A + i;
float* A_address2 = A + k;
c = _mm_setzero_ps();
for( j = 0; j < end1; j += m3, A_address1 += m3, A_address2 += m3){
a1 = _mm_loadu_ps(A_address1);
a2 = _mm_loadu_ps(A + i + j + m);
a3 = _mm_loadu_ps(A + i + j + m2);
b1 = _mm_load1_ps(A_address2);
b2 = _mm_load1_ps(A + k + j + m);
b3 = _mm_load1_ps(A + k + j + m2);
c = _mm_add_ps(c, _mm_mul_ps(a1, b1));
c = _mm_add_ps(c, _mm_mul_ps(a2, b2));
c = _mm_add_ps(c, _mm_mul_ps(a3, b3));
}
for( j = end1; j < total; j += m){
a = _mm_loadu_ps(A + i + j);
b = _mm_load1_ps(A + k + j);
c = _mm_add_ps(c, _mm_mul_ps(a, b));
}
_mm_storeu_ps(C + i + k*m, c);
}
}
if (mod != 0){
if (mod == 3){
for( i = end; i < m; i +=4 ){
for( k = 0; k < m; k++ ) {
A_address = A + i;
c = _mm_setzero_ps();
for( j = 0; j < total; j += m ) {
a = _mm_setr_ps(*(A_address),*(A_address + 1),*(A_address + 2), 0);
b = _mm_load1_ps(A + k + j);
c = _mm_add_ps(c, _mm_mul_ps(a, b));
A_address += m;
}
_mm_storeu_ps(num, c);
for (l = 0; l < 3; l ++){
*(C + i + k*m + l) = num[l];
}
}
}
}
else if (mod == 2){
for( i = end; i < m; i +=4 ){
for( k = 0; k < m; k++ ) {
A_address = A + i;
c = _mm_setzero_ps();
for( j = 0; j < total; j += m ) {
a = _mm_setr_ps(*(A_address),*(A_address + 1),0 ,0);
b = _mm_load1_ps(A + k + j);
c = _mm_add_ps(c, _mm_mul_ps(a, b));
A_address += m;
}
_mm_storeu_ps(num, c);
for (l = 0; l < 2; l ++){
*(C + i + k*m + l) = num[l];
}
}
}
}
else if (mod == 1){
for( i = end; i < m; i +=4 ){
for( k = 0; k < m; k++ ) {
A_address = A + i;
c = _mm_setzero_ps();
for( j = 0; j < total; j += m ) {
a = _mm_setr_ps(*(A_address), 0, 0, 0);
b = _mm_load1_ps(A + k + j);
c = _mm_add_ps(c, _mm_mul_ps(a, b));
A_address += m;
}
_mm_storeu_ps(num, c);
for (l = 0; l < 1; l ++){
*(C + i + k*m + l) = num[l];
}
}
}
}
}
}