Hi, I am looking for an app that makes my CPU as hot as can be. This is to test various things that should make my PC silently running on a shoestring while staying stable as is. I googled, but only found cpuburn 1.4 While this works, it seems to be developed for PIII 450 machines. I have a rather modest machine by todays standards (P4, 2.8), but even starting multiple simultaneous instances of cpuburn never "really" challenge my cpu. Does anyone know of something more stressful that works on Linux? Thanks much and kind regards Eberhard -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
cat /dev/zero > /dev/null
:)
be carefull cpu temp may be very hot
On 5/24/07, Eberhard Roloff
Hi,
I am looking for an app that makes my CPU as hot as can be.
This is to test various things that should make my PC silently running on a shoestring while staying stable as is.
I googled, but only found cpuburn 1.4
While this works, it seems to be developed for PIII 450 machines. I have a rather modest machine by todays standards (P4, 2.8), but even starting multiple simultaneous instances of cpuburn never "really" challenge my cpu.
Does anyone know of something more stressful that works on Linux?
Thanks much and kind regards Eberhard
-- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
-- with best regards from Russia -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Eberhard Roloff wrote:
I am looking for an app that makes my CPU as hot as can be.
zmd. Just add lots of sources, and it should stress your CPU quite "well". -- Joe Morris Registered Linux user 231871 running openSUSE 10.2 x86_64 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Joe Morris (NTM) wrote:
Eberhard Roloff wrote:
I am looking for an app that makes my CPU as hot as can be.
zmd. Just add lots of sources, and it should stress your CPU quite "well".
Thanks for the suggestion. ;-) Imho Beagle would also be a good candidate, but: I am looking more for something that I can use to burn, then kill and be back to normal. I do not want to have zmd/beagle based "kill my hardware" things that run infinitely before I finally make up my mind and uninstall these brilliant tools. Until now, I found and downloaded StressLinux.org System High Load Test. http://www.stresslinux.org/. Will try later and report back if and how it works. regards Eberhard -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Hey,
I googled, but only found cpuburn 1.4
While this works, it seems to be developed for PIII 450 machines. I have a rather modest machine by todays standards (P4, 2.8), but even starting multiple simultaneous instances of cpuburn never "really" challenge my cpu.
Does anyone know of something more stressful that works on Linux?
I can think of reaim, which simulates real-work workload, http://sourceforge.net/projects/re-aim-7/. But in your case it is maybe better to write some program that makes use of every part of the CPU, eg. cache cleaner (calculations with cache missing nearly 100%), vector calculations, useless register rotating ... BTW, if you found some please write to list :)
Thanks much and kind regards Eberhard
-- Patrick Kirsch - Quality Assurance Department SUSE Linux Products GmbH GF: Markus Rex, HRB 16746 (AG Nuernberg) -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thu, May 24, 2007 at 02:33:37PM +0200, Eberhard Roloff wrote:
I am looking for an app that makes my CPU as hot as can be.
"Windows Vista". ;-) More seriously, perhaps running a couple of the distributed computing clients simultaneously - one (e.g. SETI@home) to hammer the FPU, and one (e.g. a key cracking client) to hammer the integer logic. -- David Smith Work Email: Dave.Smith@st.com STMicroelectronics Home Email: David.Smith@ds-electronics.co.uk Bristol, England GPG Key: 0xF13192F2 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thursday 24 May 2007 14:33, Eberhard Roloff wrote:
Hi,
I am looking for an app that makes my CPU as hot as can be.
This is to test various things that should make my PC silently running on a shoestring while staying stable as is.
I googled, but only found cpuburn 1.4
While this works, it seems to be developed for PIII 450 machines. I have a rather modest machine by todays standards (P4, 2.8), but even starting multiple simultaneous instances of cpuburn never "really" challenge my cpu.
Does anyone know of something more stressful that works on Linux?
Thanks much and kind regards Eberhard
take a look at lucifer (http://petertodd.ca/tech/lucifer/ ) -- /Rikard ----------------------------------------------------------------------------- email : rikard.j@rikjoh.com web : http://www.rikjoh.com mob: : +46 (0)763 19 76 25 ------------------------ Public PGP fingerprint ---------------------------- < 15 28 DF 78 67 98 B2 16 1F D3 FD C5 59 D4 B6 78 46 1C EE 56 >
Eberhard Roloff wrote:
Hi,
I am looking for an app that makes my CPU as hot as can be.
This is to test various things that should make my PC silently running on a shoestring while staying stable as is.
I googled, but only found cpuburn 1.4
While this works, it seems to be developed for PIII 450 machines. I have a rather modest machine by todays standards (P4, 2.8), but even starting multiple simultaneous instances of cpuburn never "really" challenge my cpu.
Does anyone know of something more stressful that works on Linux?
Thanks much and kind regards Eberhard
try cinelerra... a video editor, I never could make it run with my 512Mb ram. time ago it asked for a cluster of 40+ machines, now may be a quad cpu... jdd -- http://www.dodin.net http://gourmandises.orangeblog.fr/ -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Eberhard Roloff wrote:
[...] I am looking for an app that makes my CPU as hot as can be.
Compile the Linux kernel in an infinite loop with make's -j option for multiple jobs. Or use gcc source instead of the Linux kernel. In principle, this should test your CPU and RAM quite well. Th. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thursday 24 May 2007 07:33, Eberhard Roloff wrote:
I am looking for an app that makes my CPU as hot as can be.
This is to test various things that should make my PC silently running on a shoestring while staying stable as is. time echo "scale=1010; 16*a(1/5)-4*a(1/239)" |bc -lq
The above will compute PI to 1000+ decimal places in about 300-400 ms on a modern PC. But, if you set scale sufficiently high---- say, 200000 then the cpu will become quite warm... and will not damage anything. -- Kind regards, M Harris <>< -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
M Harris wrote:
On Thursday 24 May 2007 07:33, Eberhard Roloff wrote:
I am looking for an app that makes my CPU as hot as can be.
This is to test various things that should make my PC silently running on a shoestring while staying stable as is. time echo "scale=1010; 16*a(1/5)-4*a(1/239)" |bc -lq
The above will compute PI to 1000+ decimal places in about 300-400 ms on a modern PC. But, if you set scale sufficiently high---- say, 200000 then the cpu will become quite warm... and will not damage anything.
Hi, while it might not be a "purpose build stresstester", this one really did cut for me. Many thanks! Eberhard -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thu, 2007-05-24 at 15:44 -0500, M Harris wrote:
On Thursday 24 May 2007 07:33, Eberhard Roloff wrote:
I am looking for an app that makes my CPU as hot as can be.
This is to test various things that should make my PC silently running on a shoestring while staying stable as is. time echo "scale=1010; 16*a(1/5)-4*a(1/239)" |bc -lq
The above will compute PI to 1000+ decimal places in about 300-400 ms on a modern PC. But, if you set scale sufficiently high---- say, 200000 then the cpu will become quite warm... and will not damage anything.
That is very cleaver I sent it to my old computer professor who likes APL. Now there is a hard language. Ill see how fast his machine kicks. -- ___ _ _ _ ____ _ _ _ | | | | [__ | | | |___ |_|_| ___] | \/ | \ /|\ || |\ / |~~\ /~~\ /~~| //~~\ | \ / | \ || | X |__/| || |( `--. |__ | | \| \_/ / \ | \ \__/ \__| \\__/ -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
All these suggestions to run this or that application 'cause it runs the CPU utilization up to or near 100% are not really appropriate as true stress testers. The point of real CPU burn-in / stress test / thermal dissipation test programs is that they keep as much of the CPUs internal logic busy as possible. Arbitrary (and realistic, everyday) instruction mixes don't often do that. That's why specialized programs are written for this purpose. In addition to generating genuinely stressful instruction mixes, the good ones also verify the results, especially of arithmetic operations, to make sure the CPU is not generating erroneous results. If you really want to see what kind of thermal loads result or ensure that there are no anomalies in your CPU, then you should use one of the purpose-built stress testers. Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Thursday 24 May 2007 15:45, Randall R Schulz wrote:
Arbitrary (and realistic, everyday) instruction mixes don't often do that. Yup, but the PI routine does... really.
... and its measurable (its amazing). -- Kind regards, M Harris <>< -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
M Harris wrote:
On Thursday 24 May 2007 15:45, Randall R Schulz wrote:
Arbitrary (and realistic, everyday) instruction mixes don't often do that.
Yup, but the PI routine does... really.
... and its measurable (its amazing).
Maybe you should try one of those "infinite binary loops", that were so popular a few years back. They were supposedly able to trash a CPU! ;-) -- Use OpenOffice.org http://www.openoffice.org -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Maybe you should try one of those "infinite binary loops", that were so popular a few years back. They were supposedly able to trash a CPU! ;-) ... I've never actually been able to ruin a cpu that was properly sinked and vented... what the PI routine does not do is IO, not till its done anyway. But what it does do if scale is set high enough is to force the memory requirements off chip... so it exercises not just the ALU, but the bus logic as well... and it keeps those flops toggling long and fast which in turn draws lots of current which in turn creates lots of heat. Most of the time
On Thursday 24 May 2007 17:08, James Knott wrote: the processor in a linux machine is pretty much sitting there idle... that has always amazed me also.... -- Kind regards, M Harris <>< -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
M Harris wrote:
On Thursday 24 May 2007 17:08, James Knott wrote:
Maybe you should try one of those "infinite binary loops", that were so popular a few years back. They were supposedly able to trash a CPU! ;-)
... I've never actually been able to ruin a cpu that was properly sinked and vented... what the PI routine does not do is IO, not till its done anyway. But what it does do if scale is set high enough is to force the memory requirements off chip... so it exercises not just the ALU, but the bus logic as well... and it keeps those flops toggling long and fast which in turn draws lots of current which in turn creates lots of heat. Most of the time the processor in a linux machine is pretty much sitting there idle... that has always amazed me also....
I guess you missed the ";-)". That "infinite binary loop" was a bit of nonsense, that was going around a few years back. -- Use OpenOffice.org http://www.openoffice.org -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 James Knott wrote:
M Harris wrote:
On Thursday 24 May 2007 17:08, James Knott wrote:
Maybe you should try one of those "infinite binary loops", that were so popular a few years back. They were supposedly able to trash a CPU! ;-)
... I've never actually been able to ruin a cpu that was properly sinked and vented... what the PI routine does not do is IO, not till its done anyway. But what it does do if scale is set high enough is to force the memory requirements off chip... so it exercises not just the ALU, but the bus logic as well... and it keeps those flops toggling long and fast which in turn draws lots of current which in turn creates lots of heat. Most of the time the processor in a linux machine is pretty much sitting there idle... that has always amazed me also....
I guess you missed the ";-)". That "infinite binary loop" was a bit of nonsense, that was going around a few years back.
This reminds me... Some a years ago I came across I link where some guys overclocked a CPU and fried an egg on it while playing Doom. But hopefully this is not what is required here :-) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFGVpY9asN0sSnLmgIRAiA2AJ9QKtfw/RF7B3o8kAM1/0bl2QM0DACdE+IK MdF/7hvKYIvULs47sJ6uyxk= =c4Z5 -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
G T Smith wrote:
I guess you missed the ";-)". That "infinite binary loop" was a bit of nonsense, that was going around a few years back.
This reminds me... Some a years ago I came across I link where some guys overclocked a CPU and fried an egg on it while playing Doom. But hopefully this is not what is required here :-)
A while ago, I read something (from someone at Intel?) that the thermal density, that is amount of heat per volume was greater in modern CPU's than in nuclear reactor! Modern CPU's often draw as much power as a light bulb and a light bulb runs white hot! -- Use OpenOffice.org http://www.openoffice.org -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Thu, 24 May 2007, by tuxebi@gmx.de:
Hi,
I am looking for an app that makes my CPU as hot as can be.
Download and burn UBCD.
That has a good collection of tests for (almost) every piece of
hardware you can think of.
In the mean time, here's something that keeps the CPU busy for a
bit:
/*
* load50.c -- a simple busy-looping tool.
*
* Obviously, this runs with any kernel and any Unix
*/
#include
Another one: Client of the GIMPS project (www.mersenne.org) in stress-test-mode. Regards ....Volker -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Easy, Install the backup software "kdar" Backup you ALL partitions and exclude noting and use "full backup" do not create multiple files to an NFS drive and verify the installation = I have had my P4 shown on me reliable due critical temp overheat despite throttling which appear (not sure) to be overridden. Kdar can be found on a search of software management using the keyword "backup" in versions 10.0-10.2 - Happy frying Scott Eberhard Roloff wrote:
Hi,
I am looking for an app that makes my CPU as hot as can be.
This is to test various things that should make my PC silently running on a shoestring while staying stable as is.
I googled, but only found cpuburn 1.4
While this works, it seems to be developed for PIII 450 machines. I have a rather modest machine by todays standards (P4, 2.8), but even starting multiple simultaneous instances of cpuburn never "really" challenge my cpu.
Does anyone know of something more stressful that works on Linux?
Thanks much and kind regards Eberhard
participants (16)
-
Carl Spitzer -
David SMITH -
Dinar Valeev -
Eberhard Roloff -
G T Smith -
James Knott -
jdd -
Joe Morris (NTM) -
M Harris -
Patrick Kirsch -
Randall R Schulz -
Registration Account -
Rikard Johnels -
Theo v. Werkhoven -
Thomas Hertweck -
Volker Poplawski