46 líneas
1.4 KiB
C++
46 líneas
1.4 KiB
C++
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// RUN: %run_test hipify "%s" "%t" %hipify_args %clang_args
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// CHECK: #include <hip/hip_runtime.h>
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#include <math.h>
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__global__
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void add(int n, float *x, float *y)
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{
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int index = blockIdx.x * blockDim.x + threadIdx.x;
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int stride = blockDim.x * gridDim.x;
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for (int i = index; i < n; i += stride)
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y[i] = x[i] + y[i];
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}
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int main(int argc, char *argv[])
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{
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int numElements = 10;
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bool testResult = true;
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float *A, *B;
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// CHECK: hipMallocManaged(&A, numElements * sizeof(float));
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cudaMallocManaged(&A, numElements * sizeof(float));
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// CHECK: hipMallocManaged(&B, numElements * sizeof(float));
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cudaMallocManaged(&B, numElements * sizeof(float));
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for (int i = 0; i < numElements; i++) {
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A[i] = 1.0f;
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B[i] = 2.0f;
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}
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int blockSize = 256;
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int numBlocks = (numElements + blockSize - 1) / blockSize;
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dim3 dimGrid(numBlocks, 1, 1);
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dim3 dimBlock(blockSize, 1, 1);
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// CHECK: hipLaunchKernelGGL(add, dim3(dimGrid), dim3(dimBlock), 0, 0, numElements, A, B);
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add<<<dimGrid, dimBlock>>>(numElements, A, B);
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// CHECK: hipDeviceSynchronize();
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cudaDeviceSynchronize();
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float maxError = 0.0f;
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for (int i = 0; i < numElements; i++)
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maxError = fmax(maxError, fabs(B[i]-3.0f));
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// CHECK: hipFree(A);
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cudaFree(A);
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// CHECK: hipFree(B);
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cudaFree(B);
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if(maxError == 0.0f)
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return 0;
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return -1;
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}
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