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sgemm-openmp.c
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sgemm-openmp.c
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#include <stdio.h>
#include <emmintrin.h>
#include <omp.h>
void sgemm( int m, int n, int d, float *A, float *C )
{
//int i,j,k;
/*__m128 first;
__m128 first1;
__m128 first2;
__m128 first3;
__m128 first4;
__m128 first5;
__m128 first6;
__m128 first7;
__m128 second;
__m128 second1;
__m128 second2;
__m128 second3;
__m128 second4;
__m128 second5;
__m128 second6;
__m128 second7;
__m128 result;
__m128 result1;
__m128 result2;
__m128 result3;
__m128 result4;
__m128 result5;
__m128 result6;
__m128 result7;
float *trans;
float *a2;
float *a;
float *c;*/
int n_div = (n % 8 == 0);
int m_div = (m % 8 == 0);
if (n_div && m_div) {
#pragma omp parallel for
for(int j = 0; j < n; j++ ) {
float* trans = A+j*(n+1);
for(int k = 0; k < m/8*8; k += 8 ) {
__m128 second = _mm_load1_ps(trans+k*n);
__m128 second1 = _mm_load1_ps(trans+(k+1)*n);
__m128 second2 = _mm_load1_ps(trans+(k+2)*n);
__m128 second3 = _mm_load1_ps(trans+(k+3)*n);
__m128 second4 = _mm_load1_ps(trans+(k+4)*n);
__m128 second5 = _mm_load1_ps(trans+(k+5)*n);
__m128 second6 = _mm_load1_ps(trans+(k+6)*n);
__m128 second7 = _mm_load1_ps(trans+(k+7)*n);
for(int i = 0; i < n/8*8; i += 8) {
float* a = A+i+k*n;
float* a2 = a;
__m128 first = _mm_loadu_ps(a);
a+=n;
__m128 first1 = _mm_loadu_ps(a);
a+=n;
__m128 first2 = _mm_loadu_ps(a);
a+=n;
__m128 first3 = _mm_loadu_ps(a);
a+=n;
__m128 first4 = _mm_loadu_ps(a);
a+=n;
__m128 first5 = _mm_loadu_ps(a);
a+=n;
__m128 first6 = _mm_loadu_ps(a);
a+=n;
__m128 first7 = _mm_loadu_ps(a);
float* c = C+i+j*n;
__m128 result = _mm_mul_ps(first, second);
__m128 result1 = _mm_mul_ps(first1, second1);
__m128 result2 = _mm_mul_ps(first2, second2);
__m128 result3 = _mm_mul_ps(first3, second3);
__m128 result4 = _mm_mul_ps(first4, second4);
__m128 result5 = _mm_mul_ps(first5, second5);
__m128 result6 = _mm_mul_ps(first6, second6);
__m128 result7 = _mm_mul_ps(first7, second7);
result = _mm_add_ps(result, result1);
result = _mm_add_ps(result, result2);
result = _mm_add_ps(result, result3);
result = _mm_add_ps(result, result4);
result = _mm_add_ps(result, result5);
result = _mm_add_ps(result, result6);
result = _mm_add_ps(result, result7);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
a = a2+4;
first = _mm_loadu_ps(a);
a+=n;
first1 = _mm_loadu_ps(a);
a+=n;
first2 = _mm_loadu_ps(a);
a+=n;
first3 = _mm_loadu_ps(a);
a+=n;
first4 = _mm_loadu_ps(a);
a+=n;
first5 = _mm_loadu_ps(a);
a+=n;
first6 = _mm_loadu_ps(a);
a+=n;
first7 = _mm_loadu_ps(a);
c += 4;
result = _mm_mul_ps(first, second);
result1 = _mm_mul_ps(first1, second1);
result2 = _mm_mul_ps(first2, second2);
result3 = _mm_mul_ps(first3, second3);
result4 = _mm_mul_ps(first4, second4);
result5 = _mm_mul_ps(first5, second5);
result6 = _mm_mul_ps(first6, second6);
result7 = _mm_mul_ps(first7, second7);
result = _mm_add_ps(result, result1);
result = _mm_add_ps(result, result2);
result = _mm_add_ps(result, result3);
result = _mm_add_ps(result, result4);
result = _mm_add_ps(result, result5);
result = _mm_add_ps(result, result6);
result = _mm_add_ps(result, result7);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
}
}
}
} else if (n_div && !m_div) {
#pragma omp parallel for
for(int j = 0; j < n; j++ ) {
float* trans = A+j*(n+1);
for(int k = 0; k < m/8*8; k += 8 ) {
__m128 second = _mm_load1_ps(trans+k*n);
__m128 second1 = _mm_load1_ps(trans+(k+1)*n);
__m128 second2 = _mm_load1_ps(trans+(k+2)*n);
__m128 second3 = _mm_load1_ps(trans+(k+3)*n);
__m128 second4 = _mm_load1_ps(trans+(k+4)*n);
__m128 second5 = _mm_load1_ps(trans+(k+5)*n);
__m128 second6 = _mm_load1_ps(trans+(k+6)*n);
__m128 second7 = _mm_load1_ps(trans+(k+7)*n);
for(int i = 0; i < n/8*8; i += 8) {
float* a = A+i+k*n;
float* a2 = a;
__m128 first = _mm_loadu_ps(a);
a+=n;
__m128 first1 = _mm_loadu_ps(a);
a+=n;
__m128 first2 = _mm_loadu_ps(a);
a+=n;
__m128 first3 = _mm_loadu_ps(a);
a+=n;
__m128 first4 = _mm_loadu_ps(a);
a+=n;
__m128 first5 = _mm_loadu_ps(a);
a+=n;
__m128 first6 = _mm_loadu_ps(a);
a+=n;
__m128 first7 = _mm_loadu_ps(a);
float* c = C+i+j*n;
__m128 result = _mm_mul_ps(first, second);
__m128 result1 = _mm_mul_ps(first1, second1);
__m128 result2 = _mm_mul_ps(first2, second2);
__m128 result3 = _mm_mul_ps(first3, second3);
__m128 result4 = _mm_mul_ps(first4, second4);
__m128 result5 = _mm_mul_ps(first5, second5);
__m128 result6 = _mm_mul_ps(first6, second6);
__m128 result7 = _mm_mul_ps(first7, second7);
result = _mm_add_ps(result, result1);
result = _mm_add_ps(result, result2);
result = _mm_add_ps(result, result3);
result = _mm_add_ps(result, result4);
result = _mm_add_ps(result, result5);
result = _mm_add_ps(result, result6);
result = _mm_add_ps(result, result7);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
a = a2+4;
first = _mm_loadu_ps(a);
a+=n;
first1 = _mm_loadu_ps(a);
a+=n;
first2 = _mm_loadu_ps(a);
a+=n;
first3 = _mm_loadu_ps(a);
a+=n;
first4 = _mm_loadu_ps(a);
a+=n;
first5 = _mm_loadu_ps(a);
a+=n;
first6 = _mm_loadu_ps(a);
a+=n;
first7 = _mm_loadu_ps(a);
c += 4;
result = _mm_mul_ps(first, second);
result1 = _mm_mul_ps(first1, second1);
result2 = _mm_mul_ps(first2, second2);
result3 = _mm_mul_ps(first3, second3);
result4 = _mm_mul_ps(first4, second4);
result5 = _mm_mul_ps(first5, second5);
result6 = _mm_mul_ps(first6, second6);
result7 = _mm_mul_ps(first7, second7);
result = _mm_add_ps(result, result1);
result = _mm_add_ps(result, result2);
result = _mm_add_ps(result, result3);
result = _mm_add_ps(result, result4);
result = _mm_add_ps(result, result5);
result = _mm_add_ps(result, result6);
result = _mm_add_ps(result, result7);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
}
}
for (int k = m/8*8; k < m; k++) {
__m128 second = _mm_load1_ps(trans+k*n);
for (int i = 0; i < n/8*8; i += 8) {
float* a = A+i+k*n;
__m128 first = _mm_loadu_ps(a);
float* c = C+i+j*n;
__m128 result = _mm_mul_ps(first, second);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
a+=4;
c+=4;
first = _mm_loadu_ps(a);
result = _mm_mul_ps(first, second);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
}
}
}
} else if (!n_div && m_div) {
#pragma omp parallel for
for(int j = 0; j < n; j++ ) {
float* trans = A+j*(n+1);
for(int k = 0; k < m/8*8; k += 8 ) {
__m128 second = _mm_load1_ps(trans+k*n);
__m128 second1 = _mm_load1_ps(trans+(k+1)*n);
__m128 second2 = _mm_load1_ps(trans+(k+2)*n);
__m128 second3 = _mm_load1_ps(trans+(k+3)*n);
__m128 second4 = _mm_load1_ps(trans+(k+4)*n);
__m128 second5 = _mm_load1_ps(trans+(k+5)*n);
__m128 second6 = _mm_load1_ps(trans+(k+6)*n);
__m128 second7 = _mm_load1_ps(trans+(k+7)*n);
for(int i = 0; i < n/8*8; i += 8) {
float* a = A+i+k*n;
float* a2 = a;
__m128 first = _mm_loadu_ps(a);
a+=n;
__m128 first1 = _mm_loadu_ps(a);
a+=n;
__m128 first2 = _mm_loadu_ps(a);
a+=n;
__m128 first3 = _mm_loadu_ps(a);
a+=n;
__m128 first4 = _mm_loadu_ps(a);
a+=n;
__m128 first5 = _mm_loadu_ps(a);
a+=n;
__m128 first6 = _mm_loadu_ps(a);
a+=n;
__m128 first7 = _mm_loadu_ps(a);
float* c = C+i+j*n;
__m128 result = _mm_mul_ps(first, second);
__m128 result1 = _mm_mul_ps(first1, second1);
__m128 result2 = _mm_mul_ps(first2, second2);
__m128 result3 = _mm_mul_ps(first3, second3);
__m128 result4 = _mm_mul_ps(first4, second4);
__m128 result5 = _mm_mul_ps(first5, second5);
__m128 result6 = _mm_mul_ps(first6, second6);
__m128 result7 = _mm_mul_ps(first7, second7);
result = _mm_add_ps(result, result1);
result = _mm_add_ps(result, result2);
result = _mm_add_ps(result, result3);
result = _mm_add_ps(result, result4);
result = _mm_add_ps(result, result5);
result = _mm_add_ps(result, result6);
result = _mm_add_ps(result, result7);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
a = a2+4;
first = _mm_loadu_ps(a);
a+=n;
first1 = _mm_loadu_ps(a);
a+=n;
first2 = _mm_loadu_ps(a);
a+=n;
first3 = _mm_loadu_ps(a);
a+=n;
first4 = _mm_loadu_ps(a);
a+=n;
first5 = _mm_loadu_ps(a);
a+=n;
first6 = _mm_loadu_ps(a);
a+=n;
first7 = _mm_loadu_ps(a);
c += 4;
result = _mm_mul_ps(first, second);
result1 = _mm_mul_ps(first1, second1);
result2 = _mm_mul_ps(first2, second2);
result3 = _mm_mul_ps(first3, second3);
result4 = _mm_mul_ps(first4, second4);
result5 = _mm_mul_ps(first5, second5);
result6 = _mm_mul_ps(first6, second6);
result7 = _mm_mul_ps(first7, second7);
result = _mm_add_ps(result, result1);
result = _mm_add_ps(result, result2);
result = _mm_add_ps(result, result3);
result = _mm_add_ps(result, result4);
result = _mm_add_ps(result, result5);
result = _mm_add_ps(result, result6);
result = _mm_add_ps(result, result7);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
}
for (int i = n/8*8; i < n; i++) {
C[i+j*n] += (A[i+k*(n)] * *(trans + k*n)) + (A[i+(k+1)*n] * *(trans + (k+1)*n))
+ (A[i+(k+2)*n] * *(trans + (k+2)*n)) + (A[i+(k+3)*n] * *(trans + (k+3)*n))
+ (A[i+(k+4)*(n)] * *(trans + (k+4)*n)) + (A[i+(k+5)*n] * *(trans + (k+5)*n))
+ (A[i+(k+6)*n] * *(trans + (k+6)*n)) + (A[i+(k+7)*n] * *(trans + (k+7)*n));
}
}
}
} else {
#pragma omp parallel for
for(int j = 0; j < n; j++ ) {
float* trans = A+j*(n+1);
for(int k = 0; k < m/8*8; k += 8 ) {
__m128 second = _mm_load1_ps(trans+k*n);
__m128 second1 = _mm_load1_ps(trans+(k+1)*n);
__m128 second2 = _mm_load1_ps(trans+(k+2)*n);
__m128 second3 = _mm_load1_ps(trans+(k+3)*n);
__m128 second4 = _mm_load1_ps(trans+(k+4)*n);
__m128 second5 = _mm_load1_ps(trans+(k+5)*n);
__m128 second6 = _mm_load1_ps(trans+(k+6)*n);
__m128 second7 = _mm_load1_ps(trans+(k+7)*n);
for(int i = 0; i < n/8*8; i += 8) {
float* a = A+i+k*n;
float* a2 = a;
__m128 first = _mm_loadu_ps(a);
a+=n;
__m128 first1 = _mm_loadu_ps(a);
a+=n;
__m128 first2 = _mm_loadu_ps(a);
a+=n;
__m128 first3 = _mm_loadu_ps(a);
a+=n;
__m128 first4 = _mm_loadu_ps(a);
a+=n;
__m128 first5 = _mm_loadu_ps(a);
a+=n;
__m128 first6 = _mm_loadu_ps(a);
a+=n;
__m128 first7 = _mm_loadu_ps(a);
float* c = C+i+j*n;
__m128 result = _mm_mul_ps(first, second);
__m128 result1 = _mm_mul_ps(first1, second1);
__m128 result2 = _mm_mul_ps(first2, second2);
__m128 result3 = _mm_mul_ps(first3, second3);
__m128 result4 = _mm_mul_ps(first4, second4);
__m128 result5 = _mm_mul_ps(first5, second5);
__m128 result6 = _mm_mul_ps(first6, second6);
__m128 result7 = _mm_mul_ps(first7, second7);
result = _mm_add_ps(result, result1);
result = _mm_add_ps(result, result2);
result = _mm_add_ps(result, result3);
result = _mm_add_ps(result, result4);
result = _mm_add_ps(result, result5);
result = _mm_add_ps(result, result6);
result = _mm_add_ps(result, result7);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
a = a2+4;
first = _mm_loadu_ps(a);
a+=n;
first1 = _mm_loadu_ps(a);
a+=n;
first2 = _mm_loadu_ps(a);
a+=n;
first3 = _mm_loadu_ps(a);
a+=n;
first4 = _mm_loadu_ps(a);
a+=n;
first5 = _mm_loadu_ps(a);
a+=n;
first6 = _mm_loadu_ps(a);
a+=n;
first7 = _mm_loadu_ps(a);
c += 4;
result = _mm_mul_ps(first, second);
result1 = _mm_mul_ps(first1, second1);
result2 = _mm_mul_ps(first2, second2);
result3 = _mm_mul_ps(first3, second3);
result4 = _mm_mul_ps(first4, second4);
result5 = _mm_mul_ps(first5, second5);
result6 = _mm_mul_ps(first6, second6);
result7 = _mm_mul_ps(first7, second7);
result = _mm_add_ps(result, result1);
result = _mm_add_ps(result, result2);
result = _mm_add_ps(result, result3);
result = _mm_add_ps(result, result4);
result = _mm_add_ps(result, result5);
result = _mm_add_ps(result, result6);
result = _mm_add_ps(result, result7);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
}
for (int i = n/8*8; i < n; i++) {
C[i+j*n] += (A[i+k*(n)] * *(trans + k*n)) + (A[i+(k+1)*n] * *(trans + (k+1)*n))
+ (A[i+(k+2)*n] * *(trans + (k+2)*n)) + (A[i+(k+3)*n] * *(trans + (k+3)*n))
+ (A[i+(k+4)*(n)] * *(trans + (k+4)*n)) + (A[i+(k+5)*n] * *(trans + (k+5)*n))
+ (A[i+(k+6)*n] * *(trans + (k+6)*n)) + (A[i+(k+7)*n] * *(trans + (k+7)*n));
}
}
for (int k = m/8*8; k < m; k++) {
__m128 second = _mm_load1_ps(trans+k*n);
for (int i = 0; i < n/8*8; i += 8) {
float* a = A+i+k*n;
__m128 first = _mm_loadu_ps(a);
float* c = C+i+j*n;
__m128 result = _mm_mul_ps(first, second);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
a+=4;
c+=4;
first = _mm_loadu_ps(a);
result = _mm_mul_ps(first, second);
_mm_storeu_ps(c, _mm_add_ps(_mm_loadu_ps(c), result));
}
for (int i = n/8*8; i < n; i++) {
C[i+j*n] += A[i+k*n] * A[j*(n+1)+k*n];
}
}
}
}
}