Re-use device buffer in yuy2 cuda helper #11737
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- add a new device buffer class which only re-allocated on demand - make the buffer instances static to preserve them between frames Github issue: IntelRealSense#11692 (comment)
attiladoor
commented
Apr 27, 2023
| static T* allocateBuffer(std::size_t const reserve_size) | ||
| { | ||
| T* datatemp{nullptr}; | ||
| cudaMalloc(&datatemp, reserve_size * sizeof(T)); |
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maybe i can add an assert to the return value of cudaMalloc and cudaFree above. What do you think?
| result = cudaGetLastError(); | ||
| assert(result == cudaSuccess); | ||
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| cudaDeviceSynchronize(); |
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In my opinion, this is unnecessary, but better to use async copy and use the same stream across the whole function and do a stream syncronization before we return from this function. By that we can avoid extra syncing, however the gain would be probably not very significant.
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Thanks for the PR, we will investigate this issue & fix :) |
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Related issue: #11692 (comment)
Nsight systems profiling:
As we can see, there is no allocation being done at the yuy2 conversion