search

mmozum / likwid

Automatically exported from code.google.com/p/likwid
GNU General Public License v3.0
0 stars 0 forks source link

Test and fix Nehalem Uncore events #6

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
The Uncore events on the Intel Nehalem processors are implemented but
do not yet work reliably.

Solution:

Test and fix the Uncore events.
Add appropriate events to the performance groups.

Original issue reported on code.google.com by jan.trei...@gmail.com on 28 Sep 2009 at 8:25

GoogleCodeExporter commented 9 years ago 
As it turned out this is an error in the Intel documentation.
It is fixed now and works but needs more testing.

Additionally it should b enforced that only one instance per socket 
measures these events.

Original comment by jan.trei...@gmail.com on 8 Feb 2010 at 4:13

GoogleCodeExporter commented 9 years ago 
This was a documentation error in the Intel Manual.
Works in new Perfmon modules.

Also a socket lock was added to allow only one thread to turn the 
Uncore events on and off.

Original comment by jan.trei...@gmail.com on 27 Apr 2010 at 8:29