On 08/12/14 11:57 PM, Joshua Mora wrote:
Hello Doug.
AMD CPUs are connected together with a coherent fabric named Hypertransport.
It allows to build shared memory system with coherency upto 8 numanodes.
Currently, AMD CPUs have 1 numanode or 2 numanodes. The first is in 1
package/socket named C32 and the second in a 1 package/socket named G34.
The package G34 has 2 numanodes connected with Hypertransport.
That is the way you can get in a single package upto 16 cores.
Hypertransport technology allows only upto 8 numanodes.
Therefore you can have mother boards that connect upto 8 C32 sockets or 4 G34
sockets.
Hypertransport consortium has designed extensions to overcome this limit,
named high (numa) node count.
Adding below a link to the specification.
http://www.hypertransport.org/default.cfm?page=HighNodeCountSpecification
Without the intend to flood this list with marketing BS:
Not taking away from any of the cool things which you can do with this..
I suspect the OP was trying to increase his density. What you mentioned
would require 2 motherboards and also an interconnect between them.
I believe Cray may have a high density blade setup, but I'm not sure if
there's anything like this for mere mortals.
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