Evgeny Mankov
46 строки
1.2 KiB
Plaintext
46 строки
1.2 KiB
Plaintext
// RUN: %run_test hipify "%s" "%t" %hipify_args %clang_args
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// Taken from Jonathan Hui blog https://jhui.github.io/2017/03/06/CUDA
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#include <stdio.h>
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// CHECK: #include <hip/hip_runtime.h>
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#include <cuda.h>
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__global__ void staticReverse(int *d, int n)
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{
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// CHECK-NOT: HIP_DYNAMIC_SHARED(int, s);
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// CHECK: __shared__ int s[64];
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__shared__ int s[64];
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int t = threadIdx.x;
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int tr = n-t-1;
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s[t] = d[t];
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// Will not conttinue until all threads completed.
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__syncthreads();
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d[t] = s[tr];
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}
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int main(void)
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{
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const int n = 64;
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int a[n], r[n], d[n];
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for (int i = 0; i < n; i++) {
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a[i] = i;
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r[i] = n-i-1;
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d[i] = 0;
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}
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int *d_d;
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// CHECK: hipMalloc(&d_d, n * sizeof(int));
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cudaMalloc(&d_d, n * sizeof(int));
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// run version with static shared memory
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// CHECK: hipMemcpy(d_d, a, n*sizeof(int), hipMemcpyHostToDevice);
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cudaMemcpy(d_d, a, n*sizeof(int), cudaMemcpyHostToDevice);
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// CHECK: hipLaunchKernelGGL(staticReverse, dim3(1), dim3(n), 0, 0, d_d, n);
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staticReverse<<<1,n>>>(d_d, n);
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// CHECK: hipMemcpy(d, d_d, n*sizeof(int), hipMemcpyDeviceToHost);
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cudaMemcpy(d, d_d, n*sizeof(int), cudaMemcpyDeviceToHost);
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for (int i = 0; i < n; i++)
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if (d[i] != r[i]) printf("Error: d[%d]!=r[%d] (%d, %d)n", i, i, d[i], r[i]);
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}
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