--- /dev/null
+//**************************************************************************
+// 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 printArray( 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)) verify(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[] )
+{
+
+ // ***************************** //
+ // **** ADD YOUR CODE HERE ***** //
+ // ***************************** //
+ //
+ // feel free to make a separate function for MI and MSI versions.
+ int i, j, k, ii, jj, bsize;
+ bsize = 16;
+ for ( jj = bsize*coreid; jj < lda; jj += bsize*ncores) {
+ for ( ii = 0; ii < lda; ii += bsize) {
+ for ( j = jj; j < lda && j < jj + bsize; j++) {
+ for ( i = ii; i < lda && i < ii + bsize; i += 8) {
+ data_t c1 = C[i + j*lda];
+ data_t c2 = C[i + j*lda + 1];
+ data_t c3 = C[i + j*lda + 2];
+ data_t c4 = C[i + j*lda + 3];
+ data_t c5 = C[i + j*lda + 4];
+ data_t c6 = C[i + j*lda + 5];
+ data_t c7 = C[i + j*lda + 6];
+ data_t c8 = C[i + j*lda + 7];
+ for ( k = 0; k < lda; k+=4 ) {
+ for (int x = 0; x < 4; x++) {
+ data_t a = A[j*lda + k+x];
+ data_t b1 = B[(k+x)*lda + i];
+ data_t b2 = B[(k+x)*lda + i + 1];
+ data_t b3 = B[(k+x)*lda + i + 2];
+ data_t b4 = B[(k+x)*lda + i + 3];
+ data_t b5 = B[(k+x)*lda + i + 4];
+ data_t b6 = B[(k+x)*lda + i + 5];
+ data_t b7 = B[(k+x)*lda + i + 6];
+ data_t b8 = B[(k+x)*lda + i + 7];
+ c1 += a * b1;
+ c2 += a * b2;
+ c3 += a * b3;
+ c4 += a * b4;
+ c5 += a * b5;
+ c6 += a * b6;
+ c7 += a * b7;
+ c8 += a * b8;
+ }
+ }
+ C[i + j*lda] = c1;
+ C[i + j*lda + 1] = c2;
+ C[i + j*lda + 2] = c3;
+ C[i + j*lda + 3] = c4;
+ C[i + j*lda + 4] = c5;
+ C[i + j*lda + 5] = c6;
+ C[i + j*lda + 6] = c7;
+ C[i + j*lda + 7] = c8;
+ }
+ }
+ }
+ }
+
+}
+//--------------------------------------------------------------------------
+// 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();
+// stats(matmul_naive(DIM_SIZE, input1_data, input2_data, results_data); barrier());
+//
+//
+// // verify
+// verify(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();
+
+
+ // Execute your faster matmul
+ barrier();
+ stats(matmul(DIM_SIZE, input1_data, input2_data, results_data); barrier());
+
+#ifdef DEBUG
+ printArray("results:", ARRAY_SIZE, results_data);
+ printArray("verify :", ARRAY_SIZE, verify_data);
+#endif
+
+ // verify
+ verify(ARRAY_SIZE, results_data, verify_data);
+ barrier();
+
+ exit(0);
+}
+
projects / riscv-tests.git / blobdiff