NastoohX
commented
1 year ago Hi,
Thank you for your question. Although, the card allows for linear increase in density, as an inverse function of FPS; however, at higher densities, other factors including PCIe traffic and control software overhead may show a diminishing return. You need to test for a stable density, in your specific use case. We report on typical use-cases here: https://xilinx.github.io/video-sdk/v3.0/specs_and_features.html#performance-tables.
To get performance numbers out of U30, use xrmadm /opt/xilinx/xrm/test/list_cmd.json command. For example if you were to decode a 4kp60 content, the decoder should report full utilisation:
"cu_3": {
"cuId ": "3",
"cuType ": "IP Kernel",
"kernelName ": "decoder",
"kernelAlias ": "DECODER_MPSOC",
"instanceName ": "decoder_1",
"cuName ": "decoder:decoder_1",
"kernelPlugin ": "/opt/xilinx/xma_plugins/libvcu-xma-dec-plg.so",
"maxCapacity ": "497664000",
"numChanInuse ": "1",
"usedLoad ": "1000000 of 1000000",
},
, whereas, if you were to decode a 4kp5 content, it will report 1/12th of utilisation:
"cu_3": {
"cuId ": "3",
"cuType ": "IP Kernel",
"kernelName ": "decoder",
"kernelAlias ": "DECODER_MPSOC",
"instanceName ": "decoder_1",
"cuName ": "decoder:decoder_1",
"kernelPlugin ": "/opt/xilinx/xma_plugins/libvcu-xma-dec-plg.so",
"maxCapacity ": "497664000",
"numChanInuse ": "1",
"usedLoad ": "83333 of 1000000",
},
Hope this helps.
Cheers,
kevinzezel
Hi,
I saw in the documentation that each Alveo U30 card can decode 16 streams at 1080p@30fps. If I lower the frame rate of the RTSP cameras to 5 FPS, can I increase the amount of stream per camera?
Is it correct to say: 16x 1080p@30fps 96x 1080p@5fps
How can I monitor card usage? Similar to htop for CPU and nvtop for GPU.
Regards, Kevin