The multi-core scalability issue with BIOS v1008

  • Thread starter Thread starter stefanbanev
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stefanbanev

SBJ: The multi-core scalability issue with BIOS v1008:

After update BIOS from v.1007 to v.1008, the speed of heavily threaded
applications, gets slower around ~ 1.48 times. All 4 cores are loaded
only 55-70% comparatively to 90% with BIOS v1007. After flash back to
BIOS v.1007 the speed gets normal as it was. This test has been
performed extensively multiple times; the result is the same; v.1008
kills the multi-core scalability to the ground.
 
SBJ: The multi-core scalability issue with BIOS v1008:

After update BIOS from v.1007 to v.1008, the speed of heavily threaded
applications, gets slower around ~ 1.48 times. All 4 cores are loaded only
55-70% comparatively to 90% with BIOS v1007. After flash back to BIOS
v.1007 the speed gets normal as it was. This test has been performed
extensively multiple times; the result is the same; v.1008 kills the
multi-core scalability to the ground.
Click to expand...

What motherboard are you using?. which OS?, if you are using Linux which
kernel?. This post is pointless without that information.
 
General said:
What motherboard are you using?. which OS?, if you are using Linux which
kernel?. This post is pointless without that information.
Click to expand...



MB ASUS K8N-DL rev 1.03
2 X socket 940 (dual Opteron 280)
CPU Speed : 2.4GHz

Memory Vendor : Corsair
*Memory Model : CM72SD1024RLP-3200 (X4)
*Memory Capacity : 4GB (A1B1A3B3)

HDD Vendor : Western Digital
HDD Model : WD2500YD (X2)
HDD Capacity : 250GB (X2 RAID0)

Operating System : WinXP
 
MB ASUS K8N-DL rev 1.03
2 X socket 940 (dual Opteron 280)
CPU Speed : 2.4GHz

Memory Vendor : Corsair
*Memory Model : CM72SD1024RLP-3200 (X4) *Memory Capacity : 4GB (A1B1A3B3)

HDD Vendor : Western Digital
HDD Model : WD2500YD (X2)
HDD Capacity : 250GB (X2 RAID0)

Operating System : WinXP
Click to expand...

Multitasking is handled by the OS, I can't think of how the BIOS could
effect it. However power management is handled by the BIOS and that would
effect performance. I don't don't know much about XP but I think that
there is a control panel that controls the performance mode. Make sure all
of the cores are running at full speed.
 
June issue of Maximum PC Lists all the fixes you need to do for dual core.
If you foolishly installed the cool and quiet driver to cause your self even
more problems, go to AMDzone.com to get the fix for that. Then you have to
create a registry key to enable it(described in full in the mag.). AMD also
has a patch at www.amd.com/us-en/assets/content_type/utilities/amdcpu.exe.
Plus the normal affinity stuff.

--
Sapphire X1600 Pro 512mb AGP
MSI Theater 550Pro TV Tuner
Thermaltake LanFire Midtower(4X80mm fans),Antec 550 Watt PSU
Gigabyte GA-K8NSC-939 nForce3, A64 3500+, Stock Cooler IdleTemp 28 C
2 Gb Dual Channel PC3200 OCZ Platinum 2-3-2-5 CL2.5
Viewsonic A91f 19in Moniter
2XSATA WD 320gb Raid Edition, PATA WD 120Gb HD
Pioneer 110D+Liteon 1693S Dual Layer burner
Logitech MX 310 Optical Mouse
Microsoft Sidewinder Precision 2 Joystick
Microsoft ergonomic keyboard
Cheap computer speakers with Sennheiser HD 477 Headphones

3DMark05Free-Overall-3134 1024X768, 4XAA/8XAF 6.4Drivers
Cpu -4405
3Dmark2001 - 8702 4XAA/8XAF 1280X1024

Games I'm Playing- Battlezone II, IL-2 Sturmovick Series
Empire Earth 2, Need For Speed: Underground 2,
Civ IV
 
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