Contrary to popular belief, I do actually know what I am talking about, so thanks very much for that..... I am involved with cluster design for a UK company that sells into the European cluster market. Working both with Intel and AMD, we actually prefer AMD, in the cases where the interconnect between the cluster nodes is high performance the AMD solutions nearly always give the best performance. those linked by Ethernet sometimes give better performance on Intel. We've generally found that the choice is usually quite simple, especially when dealing with academic establishments :-P , we've found that they just want to run their code as-is rather than optimising it to run faster. Typically such establishments specialise in their field which is not usually programming prowess... the code is usually very unelegant and not sophisticated in its approach, and it becomes a no-brainer if £1m Intel cluster runs it faster than AMD then they buy intel, but in reality some code tweaking could see a 30points improvement on the AMD cluster. The better the node interconnect the bigger lead AMD often gets... P. Joshua Baker-LePain wrote: >On Tue, 3 May 2005 at 10:19am, Peter Farrow wrote > > > >>Rather than drawing the whole of the Centos mailing list into this shoot >>out........I would love to chat with you offline..... >> >> > >I didn't mean for it to be a shoot out. It was just that your earlier >comments gave no indication that you actually knew what you were talking >about... ;) > > > >>Personally, and from a performance perspective, I'd want (and indeed >>use) the AMD 64 bit native offering.... >> >>What do you use? >> >> > >Oh, I'm a big fan of the Opterons and have several. > > >