Folding Forum

I do not mean cores i mean physical cpus. For example will FAH support two intel xeons and use both of them? or is FAH limited to a single cpu?

Multiples work just fine. I've got 3 old xeon based machines with two CPUs each (8 cores).

thank you

SuperCookie78 wrote:I do not mean cores i mean physical cpus. For example will FAH support two intel xeons and use both of them? or is FAH limited to a single cpu?

It does support multiple cpu's, back in the day the PPD king was a 4 processor machine. Not sure what the upper limit is but I know it scaled up to 8 processors without issue, these were only hex cores though so 48 threads. there were posts a long time ago referencing a 128 thread machine but I think they hit issues due to the number of threads.

Nathan_P wrote:there were posts a long time ago referencing a 128 thread machine but I think they hit issues due to the number of threads.

The issue I remember was closely related to the number of atoms in the protein being folded. Small proteins cannot fold on high-cpu-count machines; only large proteins. I think the proteins of that day were large enough for 48 but not large enough for 128.

The GPU FahCore_21 is currently being developed to handle proteins on GPUs that are even larger than were ever possible on CPUs. I don't expect software to be developed to run those proteins on CPUs. (Apparently that development has encountered many of the same issues.)