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authorHenry Cook <hcook@eecs.berkeley.edu>2014-11-06 17:24:39 -0800
committerHenry Cook <hcook@eecs.berkeley.edu>2014-11-07 16:52:51 -0800
commitd537de7deffa6036dab573ff174b7f8c8e470437 (patch)
treeddc921eb337cda4889570f0251bdba85059a2531 /mt/az_vvadd/az_vvadd.c
parent5afc6b9bc2e3685220cffb3da66ad9f5f1f7b14f (diff)
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Clean up canonical mt benchmarks and reorganize extra versions in /mt. All versions support support at least 1/2/4 threads.
Diffstat (limited to 'mt/az_vvadd/az_vvadd.c')
-rwxr-xr-xmt/az_vvadd/az_vvadd.c174
1 files changed, 0 insertions, 174 deletions
diff --git a/mt/az_vvadd/az_vvadd.c b/mt/az_vvadd/az_vvadd.c
deleted file mode 100755
index cf32ac7..0000000
--- a/mt/az_vvadd/az_vvadd.c
+++ /dev/null
@@ -1,174 +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;
- size_t split = n / ncores;
-
- //interleave accesses
- for (i = coreid * split; i < (coreid+1)*split-1 && i < n-1; i+=2) {
- x[i] = x[i] + y[i];
- x[i+1] = x[i+1] + y[i+1];
- }
-}
-
-//--------------------------------------------------------------------------
-// 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);
-}
-