73 lines
2.5 KiB
C++
Executable File
73 lines
2.5 KiB
C++
Executable File
// ======================================================================== //
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// Copyright 2009-2014 Intel Corporation //
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// //
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// Licensed under the Apache License, Version 2.0 (the "License"); //
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// you may not use this file except in compliance with the License. //
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// You may obtain a copy of the License at //
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// //
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// http://www.apache.org/licenses/LICENSE-2.0 //
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// //
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// Unless required by applicable law or agreed to in writing, software //
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// distributed under the License is distributed on an "AS IS" BASIS, //
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
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// See the License for the specific language governing permissions and //
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// limitations under the License. //
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// ======================================================================== //
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#include "prefix.h"
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namespace embree
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{
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struct prefix_sum_regression_test : public RegressionTest
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{
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prefix_sum_regression_test(const char* name) : name(name) {
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registerRegressionTest(this);
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}
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bool operator() ()
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{
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bool passed = true;
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printf("%s::%s ... ",TOSTRING(isa),name);
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fflush(stdout);
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const size_t M = 10;
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for (size_t N=10; N<10000000; N*=2.1f)
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{
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/* initialize array with random numbers */
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uint32 sum0 = 0;
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std::vector<uint32> src(N);
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for (size_t i=0; i<N; i++) {
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sum0 += src[i] = rand();
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}
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/* calculate parallel prefix sum */
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std::vector<uint32> dst(N);
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memset(dst.data(),0,N*sizeof(uint32));
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double t0 = getSeconds();
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for (size_t i=0; i<M; i++) {
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uint32 sum1 = parallel_prefix_sum(src,dst,N);
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passed &= (sum0 == sum1);
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}
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double t1 = getSeconds();
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printf("%zu/%3.2fM ",N,1E-6*double(N*M)/(t1-t0));
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/* check if prefix sum is correct */
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for (size_t i=0, sum=0; i<N; sum+=src[i++])
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passed &= ((uint32)sum == dst[i]);
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}
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/* output if test passed or not */
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if (passed) printf("[passed]\n");
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else printf("[failed]\n");
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return passed;
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}
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const char* name;
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};
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prefix_sum_regression_test prefix_sum_regression("prefix_sum_regression");
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}
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