Re: [Beowulf] memory bandwidth scaling

2015-10-05 Thread Bill Broadley
On 10/01/2015 09:27 AM, Orion Poplawski wrote: > We may be looking a getting a couple new compute nodes. I'm leery though of > going too high in processor core counts. Does anyone have any general > experiences with performance scaling up to 12 cores per processor with general > models like CM1/W

Re: [Beowulf] Semour Cray 90th Anniversary

2015-10-05 Thread Lawrence Stewart
> On 2015, Oct 2, at 11:42 AM, John Hearns wrote: > > http://www.theregister.co.uk/2015/10/02/seymour_cray_90_anniversary/ > > > > I remember learning about Gallium Arsenide and Emitter Coupled Logic when I > was but a

Re: [Beowulf] memory bandwidth scaling

2015-10-05 Thread Peter Kjellström
On Fri, 2 Oct 2015 20:18:41 -0600 Orion Poplawski wrote: > Well, that's the rub. If we compare: > > DUAL INTEL XEON 6C E5-2620V3 (2.4GHz/8GT/s/15MB)$870 > DUAL INTEL XEON 12C E5-2670V3 (2.3GHz/9.6GT/s/30MB) CPU [+$2400.00] > > So for the marginal cost we're close to being able to b