hello,
does abinit take advantage of hyperthreading with intel I7 processor ?
I have noted that beyond 4 parallel threads there is no benefit in term of overall execution time.
so if there is no advantage with hyperthreading one would go with intel I5 rather that I7.
thank for your comments ...
intel I7 I5 and hyperthreading
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Please have a look at ~abinit/doc/config/build-config.ac in the source package for detailed and up-to-date information about the configuration of Abinit 8 builds.
For a video explanation on how to build Abinit 7.x for Linux, please go to: http://www.youtube.com/watch?v=DppLQ-KQA68.
IMPORTANT: when an answer solves your problem, please check the little green V-like button on its upper-right corner to accept it.
Re: intel I7 I5 and hyperthreading
hello,
In the pas I asked me the same question.
A good answer is given here:
http://www.drdobbs.com/go-parallel/blog ... new_1.html
In the pas I asked me the same question.
A good answer is given here:
http://www.drdobbs.com/go-parallel/blog ... new_1.html
Marco Mancini
LUTH, Observatoire de Paris
5, place Jules Janssen
92190 MEUDON - FRANCE
LUTH, Observatoire de Paris
5, place Jules Janssen
92190 MEUDON - FRANCE
Re: intel I7 I5 and hyperthreading
for those who are interested:
having tried Intel I7 860 cpu (asus motherboard) and I5 750 (on gigabyte motherboard) with intel fortran compiler, and with an equivalent overclocking the results are very similar ( I7 is very negligeably faster than the I5 ).
having tried Intel I7 860 cpu (asus motherboard) and I5 750 (on gigabyte motherboard) with intel fortran compiler, and with an equivalent overclocking the results are very similar ( I7 is very negligeably faster than the I5 ).