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input & output are different

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This commit is contained in:
Hieu Hoang 2016-09-16 17:55:14 +02:00
parent 7803f44a97
commit a4111bf1fe
1 changed files with 11 additions and 22 deletions
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33
src/test.cu
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@ -8,37 +8,20 @@
using namespace std; using namespace std;
/////////////////////////////////////////////////////// ///////////////////////////////////////////////////////
__global__ void gArgMax(float* arr, size_t rows, size_t cols) { __global__ void gArgMax(float *out, const float *data, size_t rows, size_t cols) {
for (size_t row = 0; row < rows; ++row) {
size_t startInd = row * cols;
float maxScore = -99999;
size_t maxInd = -1;
for (size_t col = 0; col < cols; ++col) {
size_t ind = startInd + col;
float score = arr[ind];
if (score > maxScore) {
maxScore = score;
maxInd = col;
}
}
arr[startInd] = maxInd;
}
}
__global__ void gArgMax2(float* arr, size_t rows, size_t cols) {
size_t row = blockIdx.x; size_t row = blockIdx.x;
size_t startInd = row * cols; size_t startInd = row * cols;
float maxScore = -99999; float maxScore = -99999;
size_t maxInd = -1; size_t maxInd = -1;
for (size_t col = 0; col < cols; ++col) { for (size_t col = 0; col < cols; ++col) {
size_t ind = startInd + col; size_t ind = startInd + col;
float score = arr[ind]; float score = data[ind];
if (score > maxScore) { if (score > maxScore) {
maxScore = score; maxScore = score;
maxInd = col; maxInd = col;
} }
} }
arr[startInd] = maxInd; out[row] = maxInd;
} }
string output(const std::vector<float> &vec) string output(const std::vector<float> &vec)
@ -62,13 +45,19 @@ void temp()
thrust::copy(hVec.begin(), hVec.end(), dVec.begin()); thrust::copy(hVec.begin(), hVec.end(), dVec.begin());
float *data = thrust::raw_pointer_cast(dVec.data()); float *data = thrust::raw_pointer_cast(dVec.data());
//gArgMax<<<10, 20, sizeof(float)>>>(data, 4, 2); thrust::device_vector<float> dLabel(4);
gArgMax2<<<4, 1, sizeof(float)>>>(data, 4, 2); float *labelPtr = thrust::raw_pointer_cast(dLabel.data());
gArgMax<<<4, 1, sizeof(float)>>>(labelPtr, data, 4, 2);
std::vector<float> hVec2(8); std::vector<float> hVec2(8);
thrust::copy(dVec.begin(), dVec.end(), hVec2.begin()); thrust::copy(dVec.begin(), dVec.end(), hVec2.begin());
cerr << "hVec2=" << output(hVec2) << endl; cerr << "hVec2=" << output(hVec2) << endl;
std::vector<float> hLabel(4);
thrust::copy(dLabel.begin(), dLabel.end(), hLabel.begin());
cerr << "hLabel=" << output(hLabel) << endl;
exit(0); exit(0);
} }