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BUG: Fix GPU memory leak when creating texture object #614

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merged 1 commit into from
Sep 3, 2024
Merged

BUG: Fix GPU memory leak when creating texture object #614

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8 changes: 1 addition & 7 deletions src/rtkCudaUtilities.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -103,12 +103,6 @@ prepareScalarTextureObject(int size[3],
static cudaChannelFormatDesc channelDesc = cudaCreateChannelDesc(32, 0, 0, 0, cudaChannelFormatKindFloat);
cudaExtent volExtent = make_cudaExtent(size[0], size[1], size[2]);

// Allocate an intermediate memory space to extract the components of the input volume
float * singleComponent;
size_t numel = size[0] * size[1] * size[2];
cudaMalloc(&singleComponent, numel * sizeof(float));
CUDA_CHECK_ERROR;

// Copy image data to arrays. The tricky part is the make_cudaPitchedPtr.
// The best way to understand it is to read
// https://stackoverflow.com/questions/16119943/how-and-when-should-i-use-pitched-pointer-with-the-cuda-api
Expand All @@ -120,7 +114,7 @@ prepareScalarTextureObject(int size[3],
cudaMalloc3DArray(&threeDArray, &channelDesc, volExtent);
CUDA_CHECK_ERROR;

// Fill it with the current singleComponent
// Fill it
cudaMemcpy3DParms CopyParams = {};
CopyParams.srcPtr = make_cudaPitchedPtr(dev_ptr, size[0] * sizeof(float), size[0], size[1]);
CUDA_CHECK_ERROR;
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