Ben Sander
100 라인
3.1 KiB
C++
100 라인
3.1 KiB
C++
/*
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Copyright (c) 2015-2016 Advanced Micro Devices, Inc. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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// Test hipEventRecord serialization behavior.
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// Through manual inspection of the reported timestamps, can determine if recording a NULL event forces synchronization :
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// set
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#include "hip_runtime.h"
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#include "test_common.h"
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int main(int argc, char *argv[])
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{
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HipTest::parseStandardArguments(argc, argv, true);
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unsigned blocks = (N+threadsPerBlock-1)/threadsPerBlock;
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if (blocks > 1024)
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blocks = 1024;
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if (blocks ==0 )
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blocks = 1;
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printf ("N=%zu (A+B+C= %6.1f MB total) blocks=%u threadsPerBlock=%u iterations=%d\n", N, ((double)3*N*sizeof(float))/1024/1024, blocks, threadsPerBlock, iterations);
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printf ("iterations=%d\n", iterations);
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size_t Nbytes = N*sizeof(float);
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float * A_h, *B_h, *C_h;
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float * A_d, *B_d, *C_d;
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HipTest::initArrays (&A_d, &B_d, &C_d, &A_h, &B_h, &C_h, N);
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hipEvent_t start, stop;
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// NULL stream check:
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HIPCHECK (hipEventCreate(&start));
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HIPCHECK (hipEventCreate(&stop));
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HIPCHECK ( hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice));
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HIPCHECK ( hipMemcpy(B_d, B_h, Nbytes, hipMemcpyHostToDevice));
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for (int i=0; i<iterations; i++) {
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//--- START TIMED REGION
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long long hostStart = HipTest::get_time();
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// Record the start event
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HIPCHECK (hipEventRecord(start, NULL));
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hipLaunchKernel(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, 0, A_d, B_d, C_d, N);
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HIPCHECK (hipEventRecord(stop, NULL));
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HIPCHECK (hipEventSynchronize(stop) );
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long long hostStop = HipTest::get_time();
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//--- STOP TIMED REGION
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float eventMs = 1.0f;
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HIPCHECK (hipEventElapsedTime(&eventMs, start, stop));
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float hostMs = HipTest::elapsed_time(hostStart, hostStop);
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printf ("host_time (gettimeofday) =%6.3fms\n", hostMs);
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printf ("kernel_time (hipEventElapsedTime) =%6.3fms\n", eventMs);
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printf ("\n");
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// Make sure timer is timing something...
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HIPASSERT(eventMs > 0.0f);
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}
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HIPCHECK (hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost));
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printf ("check:\n");
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HipTest::checkVectorADD(A_h, B_h, C_h, N, true);
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passed();
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}
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