Einstein linux crunches faster on Fedora than ubuntu???
14 Oct 2006 17:40:33 UTC
Topic 191944
(moderation:
How come einstein for linux crunches faster on Fedora Core 5 x64 than on Ubuntu 6.06 x64? I have an Athlon x2 4200+ on an ECS mobo with 1GB of ram. I loaded ubuntu 6.06 x64 on it and ran a few WU's that were in the 45000sec range. Hmm.... I know that CPU can do better than that. Wiped it and loaded winxp home edition - now WU's run in the 21000 sec range! Hmmm...homey doesn't do windows. Checked the leaderboards and found that all the fast athlon systems were running some version of the fedora kernel. Loaded the Fedora core 5 x64 version and blam-o, short WU's running in the 2100 sec range. Multiply by 10 to get an approximation of what a long WU would be (2100x10=21000sec) and we see that FC5 has something that einstein wants. What is it???? Can it be loaded onto an ubuntu system (my preferred linux distro).
Einstein linux crunches faster on Fedora than ubuntu???
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Ubuntu has powernowd, power saving mode, enabled by default on desktops. As a result, your CPU is probably throttled back 50%, which explains the time difference. Change the config file for powernowd to allow "niced" processes to use 100% CPU, or disable powernowd alltogether.
M
RE: RE: How come einstein
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Thanks for the info! I was really disappointed with ubuntu performance. Now there's hope. I removed powernowd from the rc scripts and have the system crunching away. When it finishes some WU, i'll post more info.
Thanks!
RE: RE: RE: How come
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OK. I disabled powernowd in the RC scripts. For some reason you can't remove it with package manager without removing your whole desktop environment, but the problem is solved. Thanks for the help.
Good to hear it helped. I
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Good to hear it helped. I find the desktop packages kinda annoying as well. I guess the solution is to remove the desktop package and add each individual packages that you want. Since that really only saves a little hard drive space, I just leave those types of packages there (for me it's evolution), even though part of me hates the clutter.
Cheers
RE: RE: RE: Ubuntu has
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The reason is that ubuntu is designed for folk who want to run linux the way people run windows or a mac, but even easier to set up (and without the licence fees). If ubuntu were going to make this optional their style would be to do so somewhere in the gui based system config tools so you could switch it back on easily if you changed your mind. They may even have done so - did you look there?
If you don't like that policy it means you are not one of their target users. Nor am I, but I do see the point of what they are trying to do. I am glad someone is targetting those users with free software even if for those users it is only free as in beer.
River~~
~~gravywavy
RE: OK. I disabled
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Removing powernowd will not remove the whole desktop, just the ubuntu-desktop package which is safe to remove.
http://packages.ubuntulinux.org/dapper/base/ubuntu-desktop
I also use ubuntu linux and
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I also use ubuntu linux and didnt know about this one. I have wasted heaps and hgeaps of crunching power as ive run it for over a year. Thank you for letting me know about his and throtle is back to 100% i hope. lets see if this gets me more usefull crunching :)
I say again a huge TY
RE: The reason is that
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Yes there is a GUI-alternative to uninstalling the package. System->Administration->Services
CPU-frequency managment (powernowd) is turned on by default. Just unhook it.
In my case, i ran lshw (terminal), it reported cpu capacity: 1 GHz. Disabled the service; 2.2GHz.
There are other linux
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There are other linux distributions that do just as well.
My Athlon XP 2600+ (2.133 GHz) computer running Sabayon is averaging around 21k seconds per task.
Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws.
Douglas Adams (1952 - 2001)
I found a similar problem
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I found a similar problem when running ubuntu with a AMD or Core 2 Duo. Ubuntu intentionally throttles the performance for chips that allow it. The solution is to add "CPU Frequency Scaling Monitor" to the taskbar. Then you need to run a command (one time only) to give your userid permission to change the setting by running this in a terminal:
sudo dpkg-reconfigure gnome-applets
Now you can set your frequency to the maximum. However, I found that I needed to reset it to the max after every reboot.
You can read more here:
http://ubuntu.wordpress.com/2005/11/04/enabling-cpu-frequency-scaling/
Reno, NV Team: SETI.USA