Ooops, I accidentally replied only to Bill. Here is what I sent to him.

I recently started working with a dual processor workstation bought from
Dell. My role is to support the hardware and get the software installed.
It is set up with two, Xeon E5645 6-core processors. Based on only about
2 hours of working with it -- they seem to make a significant speed
difference difference. This is with a mere 12 Gb of registered DDR3
memory (6 Gb per processor.) Unfortunately we can only do 12 Gb for now,
we were hitting the budget limit. I have a question out to my customer
asking about the actual experience with applications. My impression is
there is a lot more speed.

I have a second person who really maxes out cpu performance and I think
that person needs to go beyond the single processor stage. Maybe it is
time for multiple processors, each with loads of cache and cores, and
some serious memory.


On 9/21/11 9:35 AM, Bill Davidsen wrote:
> Bob Cochran wrote:
>> I want to build a new computer system that features dual processors, a
>> lot of memory, and is able to run Xen virtualization. Install Fedora and
>> Xen as the host on such a machine, and then start running a variety of
>> other operating systems as virtual machines.
>> What dual processor hardware configurations work well with Xen? For
>> example will any Supermicro brand dual processor motherboard be hardware
>> compatible with Xen? I am thinking of Supermicro boards with Xeon
>> processors. Or is there a better brand of motherboard?
> With 2-4-6 core CPUs out there, do you really need that level of cost 
> and complexity? I run an x58 ASUS Sabertooth board with i7-950 CPU and 
> 24GB ram, and it seems up to most of what I even plan to do. With 
> eight threads I can handle lots of VMs, although I am running most 
> with KVM rather than xen. Newer boards will go to six (hyperthreaded) 
> cores, but I believe only support four sticks of mempry.
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