72 lines
2.5 KiB
C++
Executable File
72 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 "parallel_for.h"
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namespace embree
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{
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struct parallel_for_regression_test : public RegressionTest
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{
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parallel_for_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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/* sequentially calculate sum of squares */
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size_t sum0 = 0;
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for (size_t i=0; i<N; i++) {
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sum0 += i*i;
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}
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/* parallel calculation of sum of squares */
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double t0 = getSeconds();
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for (size_t m=0; m<M; m++)
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{
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AtomicCounter sum1 = 0;
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parallel_for( size_t(0), size_t(N), size_t(1024), [&](const range<size_t>& r)
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{
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size_t s = 0;
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for (size_t i=r.begin(); i<r.end(); i++)
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s += i*i;
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sum1 += s;
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});
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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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}
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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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parallel_for_regression_test parallel_for_regression("parallel_for_regression_test");
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}
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