Re: [OMPI users] Existing and emerging interconnects for commodity PCs

2016-03-21 Thread Gilles Gouaillardet
When I was doing presales, the vast majority of our small to middle size procurements were for a three years duration. sometimes, the maintenance was extended for one year, but the cluster was generally replaced after three years. I can understand the fastest clusters might last longer (5 years

Re: [OMPI users] Existing and emerging interconnects for commodity PCs

2016-03-21 Thread Jeff Hammond
On Mon, Mar 21, 2016 at 6:06 AM, Gilles Gouaillardet < gilles.gouaillar...@gmail.com> wrote: > Durga, > > currently, the average life expectancy of a cluster is 3 years. > By average life expectancy, do you mean the average time to upgrade? DOE supercomputers usually run for 5-6 years, and some

Re: [OMPI users] Existing and emerging interconnects for commodity PCs

2016-03-21 Thread Jeff Squyres (jsquyres)
+1 on what Gilles says. 10 years is too lengthy of a horizon to guarantee knowledge in the fast-moving tech sector. All you can do is make good estimates based on your requirements and budget today (and what you can estimate over the next few years). > On Mar 21, 2016, at 6:06 AM, Gilles

Re: [OMPI users] Existing and emerging interconnects for commodity PCs

2016-03-21 Thread Gilles Gouaillardet
Durga, currently, the average life expectancy of a cluster is 3 years. si if you have to architect a cluster out of off the shelf components, I would recommend you take the "best" components available today or to be released in a very near future. so many things can happen in 10 years, so I can

[OMPI users] Existing and emerging interconnects for commodity PCs

2016-03-21 Thread dpchoudh .
Hello all I don't mean this to be a political conversation, but more of a research type. >From what I have been observing, some of the interconnects that had very good technological features as well as popularity in the past have basically gone down the history book and some others, with