153 lines
4.2 KiB
C++
153 lines
4.2 KiB
C++
/*
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Copyright (c) 2010-2014, Intel Corporation
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <cstdio>
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#include <cstdlib>
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#include <algorithm>
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#include <iostream>
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#include <cassert>
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#include <iomanip>
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#include "timing.h"
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#include "ispc_malloc.h"
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#include "radixSort_ispc.h"
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/* progress bar by Ross Hemsley;
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* http://www.rosshemsley.co.uk/2011/02/creating-a-progress-bar-in-c-or-any-other-console-app/ */
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static inline void progressbar (unsigned int x, unsigned int n, unsigned int w = 50)
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{
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if (n < 100)
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{
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x *= 100/n;
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n = 100;
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}
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if ((x != n) && (x % (n/100) != 0)) return;
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using namespace std;
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float ratio = x/(float)n;
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int c = ratio * w;
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cout << setw(3) << (int)(ratio*100) << "% [";
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for (int x=0; x<c; x++) cout << "=";
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for (int x=c; x<w; x++) cout << " ";
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cout << "]\r" << flush;
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}
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struct Key
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{
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int32_t key,val;
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};
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int main (int argc, char *argv[])
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{
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int i, j, n = argc == 1 ? 1000000 : atoi(argv[1]), m = n < 100 ? 1 : 50, l = n < 100 ? n : RAND_MAX;
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double tISPC1 = 0.0, tISPC2 = 0.0, tSerial = 0.0;
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Key *keys = new Key [n];
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Key *keys_orig = new Key [n];
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unsigned int *keys_gold = new unsigned int [n];
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srand48(rtc()*65536);
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int sortBits = 32;
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assert(sortBits <= 32);
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#pragma omp parallel for
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for (int i = 0; i < n; i++)
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{
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keys[i].key = ((int)(drand48() * (1<<30))) & ((1ULL << sortBits) - 1);
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keys[i].val = i;
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}
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std::random_shuffle(keys, keys + n);
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#pragma omp parallel for
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for (int i = 0; i < n; i++)
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{
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keys_gold[i] = keys[i].key;
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keys_orig[i] = keys[i];
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}
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ispcSetMallocHeapLimit(1024*1024*1024);
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ispc::radixSort_alloc(n);
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tISPC2 = 1e30;
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for (i = 0; i < m; i ++)
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{
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ispcMemcpy(keys, keys_orig, n*sizeof(Key));
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reset_and_start_timer();
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ispc::radixSort(n, (int64_t*)keys, sortBits);
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tISPC2 = std::min(tISPC2, get_elapsed_msec());
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if (argc != 3)
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progressbar (i, m);
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}
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ispc::radixSort_free();
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printf("[sort ispc + tasks]:\t[%.3f] msec [%.3f Mpair/s]\n", tISPC2, 1.0e-3*n/tISPC2);
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std::sort(keys_gold, keys_gold + n);
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for (int i = 0; i < n; i++)
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assert(keys[i].key == keys_gold[i]);
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#if 0
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for (i = 0; i < m; i ++)
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{
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ispcMemcpy(code, code_orig, n*sizeof(unsigned int));
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reset_and_start_timer();
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sort_serial (n, code, order);
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tSerial += get_elapsed_msec();
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if (argc != 3)
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progressbar (i, m);
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}
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printf("[sort serial]:\t\t[%.3f] msec [%.3f Mpair/s]\n", tSerial, 1.0e-3*n*m/tSerial);
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#ifndef _CUDA_
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printf("\t\t\t\t(%.2fx speedup from ISPC, %.2fx speedup from ISPC + tasks)\n", tSerial/tISPC1, tSerial/tISPC2);
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#else
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printf("\t\t\t\t(%.2fx speedup from ISPC + tasks)\n", tSerial/tISPC2);
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#endif
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#endif
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delete keys;
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delete keys_orig;
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delete keys_gold;
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return 0;
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}
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