oneAPI VPL performance drop compared to Media SDK

[Alexander_K_5]

Hi.

I have encountered a serious performance drop while using oneAPI VPL.

My platform is:

• Dell Inspiron 7506 2n1
• Windows 10 Home (OS build 19043.1052)
• oneAPI VPL 2021.6.0
• CPU 11th Gen Intel(R) Core(TM) i7-1165G7
• GPU Intel(R) Iris(R) Xe Graphics (driver version 30.0.100.9864 / 30.0.100.9894 beta)

Test #1

sample_decode.exe h265 -i bitstream.h265 -hw -d3d11

Performance ~2521 fps, GPU utilization 100%

Test #2

sample_decode.exe h265 -i bitstream.h265 -hw -d3d11 -api2x_dispatcher

Performance ~890 fps, GPU utilization 44%

I also noticed that VPL version creates a giant log file (C:\temp\mfxlib.log), so perhaps this is what reduces performance.

[AlekhyaV_Intel]

Hi,

Thank you for posting in Intel Communities. We were unable to reproduce your issue. We've provided our observations below:

1) oneVPL(Version: 2021.4.0 )

Our Observations: 25-30% GPU Utilization & 114.838 fps

Media SDK(Version 2021 R1)

Our Observations: 100% GPU Utilization & 258.956 fps

GPU: Intel(R) UHD graphics(Driver Version: 27.20.100.9466)

2) oneVPL(Version: 2021.6.0)

Our observations: 100% GPU Utilization & 265.939 fps

Media SDK 2021 R1:

Our observations: 100 % GPU Utilization & 387.012 fps

GPU: Intel(R) UHD graphics(Driver Version: 27.20.100.9466)

We could observe no performance drop with oneVPL 2021.6 version. There might be a possibility that this issue is Hardware specific. To work on this issue further, we would like to have the log file you mentioned i.e. "mfxlib.log".

Regards,

Alekhya

[Alexander_K_5]

Hi Alekhya.

The log is attached to this message.

Probably I have not clearly formulated my message about performance. I meant that the VPL runtime is slower than MediaSDK runtime, which can be observed in your tests as well.

[AlekhyaV_Intel]

Hi,

Thank you for sharing the log file with us. We are working on this internally and we will get back to you soon with an update.

Regards,

Alekhya

[beruangjenggot]

any updates?