[gmx-users] new i9 processor

[Bernhard Reuter]

Dear Harry,

we have several nodes with single i9 7900 decacore processors and one 
gtx 1080ti each. So far they show very good performance compared with 
dual 16 core xeon nodes with two K20x and even K40x cards. We reach a 
performance of >40ns per day for >90000 atoms with the i9 system, 
compared to 50 ns/day with the dual xeon + dual K40x and 30 ns/day with 
the dual xeon + dual K20x. So your configuration should easily outrun 
the xeon setups... since you want to use the 16 core i9 the second gtx 
you propose might even make sense but mb you should reconsider if the 
5-10% speedup with the second card is really worth the buck ...

Best,

Bernhard


Am 16/10/17 um 11:59 schrieb Harry Mark Greenblatt:
> BS”D
>
> Dear All,
>
>    The new Skylake-X CPU’s have very high core counts, and could, in theory, take the place of a two socket 16 core Xeon system.  One could create a machine as follows:
>
> 1 x Core i9 7960X with 16 cores
> 2 x Geforce 1080 graphic cards,
>
> and run a simulation with 2 MPI ranks, coupling 8 cores to 1 gpu per rank.
>
> Would there be any technical problems arising from the single socket configuration, as opposed to a dual socket Xeon setup?  Any issues if a 14 core processor was used (7 cores per rank, i.e., an odd number)?
>
> Thanks
>
> Harry
>
>
>
>
> --------------------------------------------------------------------
> Harry M. Greenblatt
> Associate Staff Scientist
> Dept of Structural Biology           harry.greenblatt at weizmann.ac.il<../../owa/redir.aspx?C=QQgUExlE8Ueu2zs5OGxuL5gubHf97c8IyXxHOfOIqyzCgIQtXppXx1YBYaN5yrHbaDn2xAb8moU.&URL=mailto%3aharry.greenblatt%40weizmann.ac.il>
> Weizmann Institute of Science        Phone:  972-8-934-6340
> 234 Herzl St.                        Facsimile:   972-8-934-3361
> Rehovot, 7610001
> Israel
>

-- 
Dipl.-Phys. Bernhard Reuter
Theoretical Biophysics Subgroup
Theoretical Physics II
Institute of Physics
University of Kassel
Heinrich-Plett-Str. 40
34132 Kassel, Germany
Tel: +49 561 804 4482
Mobile: +40 152 27331699
https://www.researchgate.net/profile/Bernhard_Reuter