[regression] Wrong EU count for i5-5250U, reducing OpenCL performance
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
beignet (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
I run a BOINC project which uses opencl_intel on my Kubunut system
On bioinc the tasks ran in 12,000 +/- 200 seconds.
They've been doing that for ~6 months.
I've now updated the system to cosmic, and the task are not taking 19,000 +/- 200s.
I have another system (which is still running Mint18.3 - and hasn't changed) which also runs these tasks and the timings there have not changed, so the tasks themselves are still equivalent.
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: beignet-opencl-icd 1.3.2-4
ProcVersionSign
Uname: Linux 4.18.0-10-generic x86_64
ApportVersion: 2.20.10-0ubuntu13
Architecture: amd64
CurrentDesktop: KDE
Date: Wed Oct 31 01:17:08 2018
InstallationDate: Installed on 2018-05-09 (174 days ago)
InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: beignet
UpgradeStatus: Upgraded to cosmic on 2018-10-26 (4 days ago)
---
ProblemType: Bug
ApportVersion: 2.20.10-0ubuntu13
Architecture: amd64
DistroRelease: Ubuntu 18.10
InstallationDate: Installed on 2018-03-23 (228 days ago)
InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180306.1)
Package: linux
PackageArchitec
ProcVersionSign
Tags: cosmic
Uname: Linux 4.18.0-10-generic x86_64
UpgradeStatus: Upgraded to cosmic on 2018-10-28 (9 days ago)
UserGroups:
_MarkForUpload: True
Was this report sent from the affected system? as it says the CPU is an i5-2500K, which is too old for beignet. (It shouldn't crash, but won't be running the computations, so the slowdown is probably from some other package.)
Please post the output of clinfo (from the clinfo package).