Go Back   HWBOT forum > Overclocking & benchmarking > Benchmark software

Benchmark software Discuss benchmarking software.

Reply
 
Thread Tools Display Modes
  #1  
Old 06-21-2017
TAGG TAGG is online now
robo cop
 
Join Date: Oct 2015
Location: Austria
Posts: 221
Thanks: 13
Thanked 29 Times in 20 Posts
TAGG
Default Superpi 1M efficiency down the drain on singlecore

I'm currently trying to figure out, why my efficiency is so bad when benching singlecore chips:
TAGG`s SuperPi - 1M score: 16sec 656ms with a Celeron 420
With Dualcore CPUs the setup keeps up with submissions that have more or less the same core and RAM clocks/ timings, with this Celeron however the efficiency is terrible.
Tweaks done:
Maxmem 600
PCI lock
Performance for Background tasks
RAM as Systemcache (large system cache)
Pagefile 512 MB
Realtime Priority
Green Theme
Low resolution and color depth during bench
Superpi files on individual partition
kill explorer
no wazza

I'm sure I' missing some major tweak for singlecore chips here, since there is allmost a second difference...
Hope someone is willing to help me
__________________
Reply With Quote
  #2  
Old 06-22-2017
TASOS TASOS is online now
transformer
 
Join Date: Jul 2006
Location: Hellas
Posts: 955
Thanks: 106
Thanked 157 Times in 85 Posts
TASOS
Default Re: Superpi 1M efficiency down the drain on singlecore

What i could think of , is

Memory sub-timings (not the primary ones)

... and bios version.
__________________
H.O.T. Team Captain
Reply With Quote
  #3  
Old 06-22-2017
Massman's Avatar
Massman Massman is offline
In the distance
 
Join Date: Jul 2006
Location: Taipei
Posts: 22,579
Thanks: 808
Thanked 1,136 Times in 557 Posts
Massman has a spectacular aura aboutMassman has a spectacular aura aboutMassman has a spectacular aura about
Send a message via MSN to Massman
Default Re: Superpi 1M efficiency down the drain on singlecore

If I remember correctly, for Wolfdale processors SuperPI 1M would have a good boost if you use a BIOS that has a microcode that does not support the Wolfdale processors.
__________________
Where courage, motivation and ignorance meet, a persistent idiot awakens.

For all HWBOT community related questions, contact Christian Ney or Websmile. For any other questions, contact me at pieter@hwbot.org.
Reply With Quote
  #4  
Old 06-22-2017
TAGG TAGG is online now
robo cop
 
Join Date: Oct 2015
Location: Austria
Posts: 221
Thanks: 13
Thanked 29 Times in 20 Posts
TAGG
Default Re: Superpi 1M efficiency down the drain on singlecore

[MENTION=47]Massman[/MENTION] I know about the wolfdale bug, it only works on 45nm though, this Celeron is a 65nm Chip, will try different BIOS versions anyhow, once i have time (maybe try removing the microcode for this Conroe-L from the BIOS would work?) [MENTION=249]TASOS[/MENTION] Subs are not increddibly loose, and as mentioned the same setup is way better with same timings and RAM clock when using a dualcore CPU... Hence me thinking it's an OS/BIOS problem...
__________________
Reply With Quote
  #5  
Old 06-22-2017
TaPaKaH TaPaKaH is offline
robot overlord
 
Join Date: Dec 2006
Location: The Netherlands
Posts: 2,808
Thanks: 34
Thanked 268 Times in 102 Posts
TaPaKaH
Send a message via ICQ to TaPaKaH Send a message via Skype™ to TaPaKaH
Default Re: Superpi 1M efficiency down the drain on singlecore

If the computation size (1M) is bigger than your L2 cache (512K), you need copywaza.

Last edited by TaPaKaH; 06-22-2017 at 21:07.
Reply With Quote
The Following User Says Thank You to TaPaKaH For This Useful Post:
TAGG (06-23-2017)
  #6  
Old 06-23-2017
TAGG TAGG is online now
robo cop
 
Join Date: Oct 2015
Location: Austria
Posts: 221
Thanks: 13
Thanked 29 Times in 20 Posts
TAGG
Default Re: Superpi 1M efficiency down the drain on singlecore

Thanks a lot, once I'm done with Sandy i'll fire the REX up again and try using wazza even for 1M
__________________
Reply With Quote
  #7  
Old 06-24-2017
elmor's Avatar
elmor elmor is offline
transformer
 
Join Date: Nov 2006
Posts: 549
Thanks: 6
Thanked 628 Times in 145 Posts
elmor has a spectacular aura aboutelmor has a spectacular aura aboutelmor has a spectacular aura about
Default Re: Superpi 1M efficiency down the drain on singlecore

Quote:
Originally Posted by TaPaKaH View Post
If the computation size (1M) is bigger than your L2 cache (512K), you need copywaza.
1M decimals vs 512K bytes?
__________________
Elmor's lab
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 11:29.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright HWBOT 2004 - 2015