diff options
Diffstat (limited to 'mt/at_vvadd/at_vvadd.c')
| -rwxr-xr-x | mt/at_vvadd/at_vvadd.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/mt/at_vvadd/at_vvadd.c b/mt/at_vvadd/at_vvadd.c deleted file mode 100755 index b271d67..0000000 --- a/mt/at_vvadd/at_vvadd.c +++ /dev/null @@ -1,179 +0,0 @@ -//************************************************************************** -// Vector-vector add benchmark -//-------------------------------------------------------------------------- -// Author : Andrew Waterman -// TA : Christopher Celio -// Student : -// -// This benchmark adds two vectors and writes the results to a -// third vector. The input data (and reference data) should be -// generated using the vvadd_gendata.pl perl script and dumped -// to a file named dataset.h - -// to 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/DATA_SIZE, 10*_c/DATA_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( " %4ld ", (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]= %4ld, correct[%d]= %4ld\n", - i, (long) test[i], i, (long)correct[i]); - exit(-1); - } - } - - - - return; -} - -//-------------------------------------------------------------------------- -// vvadd function - -//perform in-place vvadd -void __attribute__((noinline)) vvadd(size_t n, data_t* __restrict__ x, const data_t* __restrict__ y) -{ - size_t i; - - // interleave accesses - for (i = coreid; i < n; i+=ncores) - { - - - x[i] = x[i] + y[i]; - } -} - -void __attribute__((noinline)) vvadd_opt(size_t n, data_t* __restrict__ x, const data_t* __restrict__ y) -{ - // ***************************** // - // **** ADD YOUR CODE HERE ***** // - // ***************************** // - - size_t i; - - // interleave accesses - for (i = (coreid*n)/ncores; i < ((coreid+1)*n)/ncores; i++) - { - - - x[i] = x[i] + y[i]; - } -} - -//-------------------------------------------------------------------------- -// 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[DATA_SIZE]; - - // because we're going to perform an in-place vvadd (and we're going to run - // it a couple of times) let's copy the input data to a temporary results - // array - - size_t i; - if (coreid == 0) - { - for (i = 0; i < DATA_SIZE; i++) - results_data[i] = input1_data[i]; - } - - - // Execute the provided, terrible vvadd - barrier(nc); - stats(vvadd(DATA_SIZE, results_data, input2_data); barrier(nc)); - - - // verify - verifyMT(DATA_SIZE, results_data, verify_data); - - // reset results from the first trial - if (coreid == 0) - { - for (i=0; i < DATA_SIZE; i++) - results_data[i] = input1_data[i]; - } - barrier(nc); - - - // Execute your faster vvadd - barrier(nc); - stats(vvadd_opt(DATA_SIZE, results_data, input2_data); barrier(nc)); - -#ifdef DEBUG - printArrayMT("results: ", DATA_SIZE, results_data); - printArrayMT("verify : ", DATA_SIZE, verify_data); -#endif - - // verify - verifyMT(DATA_SIZE, results_data, verify_data); - barrier(nc); - - exit(0); -} - |