Dear R-developers,
the following may seem a weird question for R-devel I try anyway, because it
does seem to be related to usage of R and R's way of interacting with the
hardware.
When running R (2.4.0) on my new dual core Windows XP system (Intel Core 2 Duo
E6600, Mainboard ASUS P5B, BeQuiet Power Unit), I observe various types of
sounds (not related to fans) when running at full usage of at least one of the
cores.
The most annoying sound a high-pitched noise like a whine I have so far
observed running simulations in R only and couldnt reproduce with any other
software (sometimes its also more a rustle than a whine, that one is not
disturbing). I can clearly track it down to particular instances of R as
soon as I left-click on a blue window bar in the affected R-Gui, the noise
stops (and there are sometimes other instances of R running in parallel which
are completely unrelated to the whine). Ive also stopped R when the computer
just whined and started SAS, fully using the CPU as well no whine. Shut down
SAS, restart R à whine again. Apparently, it can also be related to what
exactly R is doing at the particular moment. For example, I just discovered
that simulations of one type were finished, because the computer running
another simulation under full load on R in a quiet way started whining at
the moment it switched to the new type of simulation.
The hardware technician Ive asked about this issue does not have any idea and
suspects R to do something peculiar that causes the noise. Its not the
mainboards fault (that has already been changed for another reason, and the
behavior remains). I cant definitely locate the source of the sound. I
suspect that its the Power Unit, but there are so many parts close together
that I am not really sure.
I do not know enough about interactions of R with hardware to know whether it
is even possible for anyone deeper into the matter to develop an idea what
could be behind this behavior. For the moment, I can get rid of the whine by
using the mainboard tool AI Gear to reduce the processors speed from 2.4GHz
to 1.7GHz when I want to concentrate then the whine is gone (but the
simulation is slower).
Does anyone have any idea or hints regarding what else I could think about ?
Regards, Ulrike
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Prof. Dr. Ulrike Grömping
Fachbereich II
TFH Berlin
Luxemburger Str. 10
13353 Berlin
mail: [EMAIL PROTECTED]
www: www.tfh-berlin.de/~groemp/
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******************************
Prof. Dr. Ulrike Grömping
Fachbereich II
TFH Berlin
Luxemburger Str. 10
13353 Berlin
mail: [EMAIL PROTECTED]
www: www.tfh-berlin.de/~groemp/
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