Is that possible to use NVIDIA GPIDirect RDMA with NVIDIA nvJPEG?
From the description of RDMA technology that should be possible but seems nvJPEG interfaces expect only host memory input.
2 Answers
You can use nvJPEG for encoding raw data from device memory, with the output in device memory. You could use nvjpegEncodeImage() followed by nvjpegEncodeRetrieveBitstreamDevice().
Regarding the decoding, you can use the batched API with the _DEVICE backends! It allows to pass device pointers
Nvidia nvJPEG uses a hybrid approach for JPEG decoding. Some of the code is executed on the CPU, some of it on the GPU.
See especially the decoupled functions https://docs.nvidia.com/cuda/nvjpeg/index.html#nvjpeg-decoupled-decode-api
So, no, it is not possible.
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