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Tobias_G_
Beginner
242 Views

PCM / QPI error

Hi,

we want to monitor QPI links (the number of remove and local accesses) to evaluate our application. Later we want to report our evaluations to be publish on a scientific work. To perform the aforementioned monitoring we are utilizing intel PCM 2.8 tool to extract such numbers. Using intel PCM returns errors which make monitoring impossible. We traced the error in the websites and it seems that this functionality (accessing QPI counters) is not provided by the mainboard.

Like here:

https://software.intel.com/en-us/forums/topic/278396

The first errors we get:

ERROR: QPI LL monitoring device (0:63:8:2) is missing. The QPI statistics will be incomplete or missing.
ERROR: QPI LL monitoring device (0:63:9:2) is missing. The QPI statistics will be incomplete or missing.
Socket 0: 1 memory controllers detected with total number of 4 channels. 0 QPI ports detected.
ERROR: QPI LL monitoring device (0:127:8:2) is missing. The QPI statistics will be incomplete or missing.
ERROR: QPI LL monitoring device (0:127:9:2) is missing. The QPI statistics will be incomplete or missing.
Socket 1: 1 memory controllers detected with total number of 4 channels. 0 QPI ports detected.
ERROR: QPI LL monitoring device (0:191:8:2) is missing. The QPI statistics will be incomplete or missing.
ERROR: QPI LL monitoring device (0:191:9:2) is missing. The QPI statistics will be incomplete or missing.
Socket 2: 1 memory controllers detected with total number of 4 channels. 0 QPI ports detected.
ERROR: QPI LL monitoring device (0:255:8:2) is missing. The QPI statistics will be incomplete or missing.
ERROR: QPI LL monitoring device (0:255:9:2) is missing. The QPI statistics will be incomplete or missing.
Socket 3: 1 memory controllers detected with total number of 4 channels. 0 QPI ports detected.

I attach some files hope they are useful:

469265

469264

469263

OS: Ubuntu 14.04 LTS

Dell R820 BIOS Version: 2.3.2

The only available option in BIOS is QPI Speed as in the screenshot and also set on Maximum data rate.

QPI_R820_BIOS.JPG

That is all i got. If you need any more informations let me know!

We hope you can help us with this problem. But if it's not possible with our hardware an official answer is helpful as well.

Best regards,

Tobias

 

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1 Reply
Roman_D_Intel
Employee
242 Views

In this thread an experimental version of Dell BIOS exposing the counters is mentioned.

Best regards,

Roman

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