CODEWITHSUNDEEP
c++
SkyRipper
SkyRipper

Reputation: 175

cudaMalloc doesn't work with template

template <typename T, std::size_t N>
void gpu_load(T (&data)[N])
{
    cudaMalloc((void**)data, N*sizeof(T));
}

I call it like this:

float data[2];
gpu_load(data);

But it doesn't work. I guss it must be something with the & and points...

Upvotes: 0

Views: 436

Answers (1)

Jherico
Jherico

Reputation: 29240

You can't just convert a pointer to a pointer to a pointer. data is of type T* but cudaMalloc wants a void **.

Try this:

cudaMalloc(static_cast<void**>(&d), N*sizeof(T));

Note the new ampersand.

Edit: added the static cast as suggested in the comments.

Upvotes: 1

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