I’m working on a HD video decoding and present project. Our plan is to plug multiple
CUDA device (display card) into one system and expect one CUDA device for two HD
video decoding. My question is:
Does CUVID support multiple GPU? I can’t find any API to choose CUDA device in
CUVID.
What is the performance of CUVID? Let’s say 240GT, what is the maximum fps with CUVID?
I’m not an expert on CUVID, but I believe it uses the current CUDA context, so it will support multiple GPUs if you create the contexts on the right GPUs in the usual way.
The performance obviously depends on the codec and resolution. It’s certainly capable of decoding DVD / BluRay streams in real time. On my GTX260 here the sample code decodes a 720p MPEG 2 stream at about 140 fps.
I tried to decode a baseline 1080P movie on GTS250 and GT240, GT220. The result is strange – got about 60fps on GTS250, while 200fps on GT240 and 100fps on GT220.
Is that means the decode ability of VP4 is much much better than VP2?
For the multiple GPU:
When I plug GT240 and GT220 into my system, the decoder failed in initializing. The error message: