VP9 Encoder causes GPU hang for tiled encode

intel / intel-vaapi-driver

VA-API user mode driver for Intel GEN Graphics family

https://01.org/linuxmedia

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VP9 Encoder causes GPU hang for tiled encode #452

Open sreerenjb opened 5 years ago

sreerenjb commented 5 years ago

How to reproduce the issue:

Instruct libva to encode with 2 columns tiles either in libva-utils or gstreamer-vaapi by setting the param: pic_param->log2_tile_columns=1

Immediate GPU hang "i915 0000:00:02.0: Resetting vcs0 for hang on vcs0"

Brainiarc7 commented 5 years ago

Hello there,

With ffmpeg, can you reproduce the same when you pass the -slices:v option to the vp9_vaapi encoder?

sreerenjb commented 5 years ago

I haven't tried. I don't have the ffmpeg vaapi stack. But It should be reproducible I guess because there is no specific logic involved with this, just the matter of assigning a non-zero value to tile_column attribute and it should hit the gpu hang. :)

xhaihao commented 5 years ago

Yes, the devices supported by this driver don't support vp9 encoding with multiple tiles.

Brainiarc7 commented 5 years ago

Ouch. That hurts.