[gmx-users] GMX and Celero

[schraven at mpip-mainz.mpg.de]

I don´t want to be rude, but celerons are probably not exactly the best buy for 
heavy computing, they are very (s)low on cache memory. A lower clockspeed P4 
may be a better idea (or hey, an AMD may even be best price/performance option 
in your case). 

Comparison of the L2 cache on P4 and celeron:
http://www.tomshardware.com/cpu/20020903/p4_celeron-01.html

Still, since you already bought it anyway, and are comparing two celerons with 
each other, you should see a difference of course. Did you use the same 
compiler options, used the right fftw libraries, etc? Maybe it is a good idea 
to do all the benchmarks om both systems and compare the results. It might 
become clearer then where the origin of your problem is (e.g. it might be a 
problem with your memory if the small systems are faster and the dppc system 
has the same speed, just guessing here).

Zitat von gmx-users-request at gromacs.org:

> From: Marcos Villarreal <arloa at dqb.fcq.unc.edu.ar>
> Subject: [gmx-users] GMX and Celeron
> 
> Hello,
> 
> I just acquired a Celeron 2.5 Ghz with a motherboard PcChips 925, then I 
> installed RedHat 9.0, and GMX 3.2.1.
> The problem is that on this cpu, GMX run at the same speed as in an older 
> Celeron 1.4 Ghz with the same OS, etc.
> Could please anybody suggest me where the problem could be?
> 
> PD: I know that this is not a totally GMX-related question, but I spend a 
> whole salary on this cpu, so please help me.



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