benchmarks/mt-vvadd/mt-vvadd.c

   1 // See LICENSE for license details.
   2
   3 //**************************************************************************
   4 // Vector-vector add benchmark
   5 //--------------------------------------------------------------------------
   6 // Author  : Andrew Waterman
   7 // TA      : Christopher Celio
   8 // Student :
   9 //
  10 // This benchmark adds two vectors and writes the results to a
  11 // third vector. The input data (and reference data) should be
  12 // generated using the vvadd_gendata.pl perl script and dumped
  13 // to a file named dataset.h
  14
  15 //--------------------------------------------------------------------------
  16 // Includes
  17
  18 #include <string.h>
  19 #include <stdlib.h>
  20 #include <stdio.h>
  21
  22
  23 //--------------------------------------------------------------------------
  24 // Input/Reference Data
  25
  26 #include "dataset.h"
  27
  28
  29 //--------------------------------------------------------------------------
  30 // Basic Utilities and Multi-thread Support
  31
  32 #include "util.h"
  33
  34
  35 //--------------------------------------------------------------------------
  36 // vvadd function
  37
  38 extern void __attribute__((noinline)) vvadd(int coreid, int ncores, size_t n, const data_t* x, const data_t* y, data_t* z);
  39
  40
  41 //--------------------------------------------------------------------------
  42 // Main
  43 //
  44 // all threads start executing thread_entry(). Use their "coreid" to
  45 // differentiate between threads (each thread is running on a separate core).
  46
  47 void thread_entry(int cid, int nc)
  48 {
  49    // static allocates data in the binary, which is visible to both threads
  50    static data_t results_data[DATA_SIZE];
  51
  52    // First do out-of-place vvadd
  53    barrier(nc);
  54    stats(vvadd(cid, nc, DATA_SIZE, input1_data, input2_data, results_data); barrier(nc), DATA_SIZE);
  55
  56    if(cid == 0) {
  57      int res = verifyDouble(DATA_SIZE, results_data, verify_data);
  58      if(res) exit(res);
  59    }
  60
  61    // Second do in-place vvadd
  62    // Copying input
  63    size_t i;
  64    if(cid == 0) {
  65      for (i = 0; i < DATA_SIZE; i++)
  66            results_data[i] = input1_data[i];
  67    }
  68    barrier(nc);
  69    stats(vvadd(cid, nc, DATA_SIZE, results_data, input2_data, results_data); barrier(nc), DATA_SIZE);
  70
  71    if(cid == 0) {
  72      int res = verifyDouble(DATA_SIZE, results_data, verify_data);
  73      if(res) exit(res);
  74    }
  75
  76    barrier(nc);
  77    exit(0);
  78 }