[gmx-users] overheating problem

[David van der Spoel]

On 2012-02-03 23:49, ahmet yıldırım wrote:
> Dear Mark,
>
>
> Believe me, I tried all methods that you said but unfortunately the
> result doesnt change :(

It used to be like this that GROMACS ran more efficient on AMD cpus than 
the official AMD burn-in code, and therefore also hotter. You could run 
gromacs on fewer cores to see if that helps, but it seems like a 
hardware problem. Have any warranty on your computers?

>
> 2012/2/4 Mark Abraham <Mark.Abraham at anu.edu.au
> <mailto:Mark.Abraham at anu.edu.au>>
>
>     On 4/02/2012 8:24 AM, ahmet yıldırım wrote:
>>     Dear users,
>>
>>     I am using ubuntu 11.1 (64 bit). The Ubuntu normally runs when I
>>     dont run the Gromacs program. i.e there is not heating problem.
>>     But the CPU is excessive heating (82 degree) when I run the gromacs.
>
>     There are various "stress test" programs you can get if you Google
>     around. I expect these will produce the same symptoms.
>
>
>>     I am using the all cores at 100%. Now I have 2 PC.I use them
>>     separately
>>     1.first: It has Intel i7 920 CPU and Asus P6T SE motherboard
>>     2.second: It has Intel I7 960 and Gıgabyte x58A-UD5 LGA 1366
>>     motherboard
>>     I have the problem of warming/overheating on both computers. I
>>     could not figure out this problem for two weeks :(
>>     By the way:
>>     -I dont use an older compiler to get the binary. I am using gcc
>>     4.6 and I am using Gromacs 4.5.4
>>     -I watch the temperatures by "lm sensor" program
>>     -I installed ubuntu 32-bit but the result didnt change again
>>     -I have sufficient cooling on both PC
>
>     I'd say this is evidence that you don't have sufficient cooling.
>
>
>>     It is likely something related to the program because no problem
>>     with any hardware related to computers according to experts say.
>
>     If things are installed correctly. For example, cheap thermal paste
>     between the CPU and heat sink can cause these symptoms.
>
>
>>
>>     what do you suggest? :(
>
>     Get more cooling. Maybe lower the clock speed (if possible). Run a
>     less efficient MD code!
>
>     Mark
>
>
>>
>>     *atk0110-acpi-0
>>     Adapter: ACPI interface
>>     Vcore Voltage:       +1.22 V  (min =  +0.80 V, max =  +1.60 V)
>>      +3.3 Voltage:       +3.31 V  (min =  +2.97 V, max =  +3.63 V)
>>      +5 Voltage:         +5.00 V  (min =  +4.50 V, max =  +5.50 V)
>>      +12 Voltage:       +12.03 V  (min = +10.20 V, max = +13.80 V)
>>     CPU FAN Speed:      2163 RPM  (min =  600 RPM)
>>     CHASSIS1 FAN Speed:    0 RPM  (min =  600 RPM)
>>     CHASSIS2 FAN Speed: 2033 RPM  (min =  600 RPM)
>>     POWER FAN Speed:       0 RPM  (min =    0 RPM)
>>     CPU Temperature:     +82.0°C  (high = +60.0°C, crit = +75.0°C)
>>     MB Temperature:      +45.0°C  (high = +45.0°C, crit = +75.0°C)
>>
>>     radeon-pci-0200
>>     Adapter: PCI adapter
>>     temp1:        +60.5°C *
>>
>>
>>     --
>>     Ahmet Yıldırım
>>
>>
>>
>
>
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>
>
> --
> Ahmet Yıldırım
>
>
>


-- 
David van der Spoel, Ph.D., Professor of Biology
Dept. of Cell & Molec. Biol., Uppsala University.
Box 596, 75124 Uppsala, Sweden. Phone:	+46184714205.
spoel at xray.bmc.uu.se    http://folding.bmc.uu.se