QAT Service failed after build from QATLib Github source

OttoChow — Mon, 22 Apr 2024 09:45:48 GMT

The OS env. is Ubuntu 20.04 and the server HW is based on Xeon 5416S Server (2 Sockets). I downloaded the QAT Driver Software package - QAT20.L.1.1.40-00018.tar.gz from Intel website. I built the driver and QAT software, then install it as usual.

QAT Service can be started without issue. QAT Manager can show that QAT accelerator end points are available.

After 2 days of working on data compression functions of QAT accelerator, there are some questions regarding to QATLIB function. Overall, the HW functions as expected.

I found that there is a new release of QATLIB on Github. I decided to have a go, download the source and build it.

Then QAT Service cannot be started and qatmgr reports "No devices found". Nothing of QAT works. However, if I reverse back to QAT20L ... package, everything is back to normal.

I tried to compare these two version of QAT software. QAT20.L.1.1.40-0000=18, it starts the QAT Service by "ExecStart=/etc/init.d/qat_service start"; QATLIB from Github, it starts by "/usr/local/sbin/qatmgr --policy=${POLICY}. Wondering whether that is the reason why QAT Service does not start after updating with the Github version of QATLIB.

Anything I missed?

Regards,

Otto

Re:QAT Service failed after build from QATLib Github source

Ronny_G_Intel — Tue, 23 Apr 2024 19:48:48 GMT

Hi Otto,

There are two types of QAT driver, in-tree and out-of-tree.

If the qat driver is in kernel, it is in-tree otherwise it is out-of-tree.

If you use in-tree QAT driver then you install qatlib.

Make sure that the host and the guest all use in-tree qat driver.

You are using QAT20.L.1.1.40-00018.tar.gz which means out-of-tree driver.

If you want to use in-tree, before installing qatlib, you must uninstall the out-of-tree qat driver.

I hope this helps.

Regards,

Ronny G

topic QAT Service failed after build from QATLib Github source in Intel® QuickAssist Technology (Intel® QAT)

QAT Service failed after build from QATLib Github source

Re:QAT Service failed after build from QATLib Github source