The ABINIT Users Mailing List ( CLOSED )

[Anglade Pierre-Matthieu <anglade@gmail.com>]

Hi,
I haven't test all these configuration yet here are some basic considerations:
-ECC memory is slower. It would provide you a little more safety
regarding some critical data. It is not mandatory at all for
scientific calculations.
-Since abinit uses heavily double precision computations with few
branches, the pipelines problem of p4 might not affect you too much
here. (Otherwise you would have easily chosen the AMD)
-Yet abinit like most dft code is very bandwith sensitive. That's why
the P4- 830 might not suit your goals. Indeed they share the memory
bandwith and it might have a strong impact on your computations.
-With Xeon you'll get half the computation power (only one core right?)
-Then my best guess is for the athlon X2.
-Note that for small calculations abinit is cach sensitive. You might
prefer some athlon 64X2 with large caches (4000+ is the same frequency
with twice more cache)
regards,
--
Pierre-Matthieu Anglade