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-rw-r--r--mt/af_matmul/failedattempt2.c229
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diff --git a/mt/af_matmul/failedattempt2.c b/mt/af_matmul/failedattempt2.c
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-//**************************************************************************
-// Multi-threaded Matrix Multiply benchmark
-//--------------------------------------------------------------------------
-// TA : Christopher Celio
-// Student:
-//
-//
-// This benchmark multiplies two 2-D arrays together and writes the results to
-// a third vector. The input data (and reference data) should be generated
-// using the matmul_gendata.pl perl script and dumped to a file named
-// dataset.h.
-
-
-// print out arrays, etc.
-//#define DEBUG
-
-//--------------------------------------------------------------------------
-// Includes
-
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-
-//--------------------------------------------------------------------------
-// Input/Reference Data
-
-typedef float data_t;
-#include "dataset.h"
-
-
-//--------------------------------------------------------------------------
-// Basic Utilities and Multi-thread Support
-
-__thread unsigned long coreid;
-unsigned long ncores;
-
-#include "util.h"
-
-#define stringify_1(s) #s
-#define stringify(s) stringify_1(s)
-#define stats(code) do { \
- unsigned long _c = -rdcycle(), _i = -rdinstret(); \
- code; \
- _c += rdcycle(), _i += rdinstret(); \
- if (coreid == 0) \
- printf("%s: %ld cycles, %ld.%ld cycles/iter, %ld.%ld CPI\n", \
- stringify(code), _c, _c/DIM_SIZE/DIM_SIZE/DIM_SIZE, 10*_c/DIM_SIZE/DIM_SIZE/DIM_SIZE%10, _c/_i, 10*_c/_i%10); \
- } while(0)
-
-
-//--------------------------------------------------------------------------
-// Helper functions
-
-void printArrayMT( char name[], int n, data_t arr[] )
-{
- int i;
- if (coreid != 0)
- return;
-
- printf( " %10s :", name );
- for ( i = 0; i < n; i++ )
- printf( " %3ld ", (long) arr[i] );
- printf( "\n" );
-}
-
-void __attribute__((noinline)) verifyMT(size_t n, const data_t* test, const data_t* correct)
-{
- if (coreid != 0)
- return;
-
- size_t i;
- for (i = 0; i < n; i++)
- {
- if (test[i] != correct[i])
- {
- printf("FAILED test[%d]= %3ld, correct[%d]= %3ld\n",
- i, (long)test[i], i, (long)correct[i]);
- exit(-1);
- }
- }
-
- return;
-}
-
-//--------------------------------------------------------------------------
-// matmul function
-
-// single-thread, naive version
-void __attribute__((noinline)) matmul_naive(const int lda, const data_t A[], const data_t B[], data_t C[] )
-{
- int i, j, k;
-
- if (coreid > 0)
- return;
-
- for ( i = 0; i < lda; i++ )
- for ( j = 0; j < lda; j++ )
- {
- for ( k = 0; k < lda; k++ )
- {
- C[i + j*lda] += A[j*lda + k] * B[k*lda + i];
- }
- }
-
-}
-
-
-
-void __attribute__((noinline)) matmul(const int lda, const data_t A[], const data_t B[], data_t C[] )
-{
- size_t i;
- size_t i2;
- size_t j;
- size_t j2;
- size_t k;
- size_t k2;
- size_t max_dim = lda*lda;
- size_t block_size = lda/2;
- int result = 0;
- data_t temp_mat1[32] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
- if (coreid == 0) {
- for (k = 0; k < lda/2; k++) {
- int columnIndex = 32*k;
-
- //temp_mat1 will store the kth column of B
- for (i = 0; i < lda; i++) {
- temp_mat1[i] = B[32*i + k];
- }
-
- for (j =0; j < lda; j++) {
- int rowIndex = 32*j;
- //iterate through each element of A in row J and accumulate result
- for (i2 = 0; i2 <lda; i2 += 4) {
- int elementA = A[rowIndex+i2];
- int elementA2 = A[rowIndex+i2+1];
- int elementA3 = A[rowIndex+i2+2];
- int elementA4 = A[rowIndex+i2+3];
- result += elementA*temp_mat1[i2] + elementA2*temp_mat1[i2+1] + elementA3*temp_mat1[i2+2] + elementA4*temp_mat1[i2+3] ;
- }
- C[k+rowIndex] = result;
- result = 0;
- }
-
- }
- } else {
- for (k = lda/2; k < lda; k++) {
- int columnIndex = 32*k;
-
- //temp_mat1 will store the kth column of B
- for (i = 0; i < lda; i++) {
- temp_mat1[i] = B[32*i + k];
- }
-
- for (j =0; j < lda; j++) {
- int rowIndex = 32*j;
- //iterate through each element of A in row J and accumulate result
- for (i2 = 0; i2 <lda; i2 += 4) {
- int elementA = A[rowIndex+i2];
- int elementA2 = A[rowIndex+i2+1];
- int elementA3 = A[rowIndex+i2+2];
- int elementA4 = A[rowIndex+i2+3];
- result += elementA*temp_mat1[i2] + elementA2*temp_mat1[i2+1] + elementA3*temp_mat1[i2+2] + elementA4*temp_mat1[i2+3] ;
- }
- C[k+rowIndex] = result;
- result = 0;
- }
-
- }
-
- }
-
-
-
-
- // ***************************** //
- // **** ADD YOUR CODE HERE ***** //
- // ***************************** //
- //
- // feel free to make a separate function for MI and MSI versions.
-
-}
-
-//--------------------------------------------------------------------------
-// Main
-//
-// all threads start executing thread_entry(). Use their "coreid" to
-// differentiate between threads (each thread is running on a separate core).
-
-void thread_entry(int cid, int nc)
-{
- coreid = cid;
- ncores = nc;
-
- // static allocates data in the binary, which is visible to both threads
- static data_t results_data[ARRAY_SIZE];
-
-
- // Execute the provided, naive matmul
- barrier(nc);
- stats(matmul_naive(DIM_SIZE, input1_data, input2_data, results_data); barrier(nc));
-
-
- // verify
- verifyMT(ARRAY_SIZE, results_data, verify_data);
-
- // clear results from the first trial
- size_t i;
- if (coreid == 0)
- for (i=0; i < ARRAY_SIZE; i++)
- results_data[i] = 0;
- barrier(nc);
-
-
- // Execute your faster matmul
- barrier(nc);
- stats(matmul(DIM_SIZE, input1_data, input2_data, results_data); barrier(nc));
-
-#ifdef DEBUG
- printArrayMT("results:", ARRAY_SIZE, results_data);
- printArrayMT("verify :", ARRAY_SIZE, verify_data);
-#endif
-
- // verify
- verifyMT(ARRAY_SIZE, results_data, verify_data);
- barrier(nc);
-
- exit(0);
-}
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