Advantech ASMB-913I User Manual page 66

Note! 1.
2.
ASMB-913I User Manual
Intel® recommends exposing all 3 snoop modes as BIOS options
to the user due to the varying memory latency & bandwidth trad-
eoffs across SKUs for each snoop mode.
a). Intel® Xeon® Processor E5-2600 v3 Product Family supports
up to 3 different snoop modes (Early Snoop, Home Snoop, Cluster
on Die) to maintain memory coherency across the 2 sockets.
b). Choosing the optimal snoop mode setting is dependent on the
workload characteristics and the SKU that is used.
It is expected behavior for LCC SKUs (4-8 cores) in NUMA & Early
Snoop mode to have low remote bandwidth.
a). For workloads on LCC SKUs that need high local & remote
memory bandwidth, use NUMA & Home Snoop mode at the
expense of higher memory latency (up to 1.07x).
b). For workloads on LCC SKUs that have mostly remote memory
accesses, use UMA & either Early Snoop or Home Snoop mode.
Snoop Mode
Configuration
Early Snoop (ES)
Home Snoop (HS)
Cluster on Die (COD)
Not Supported - Invalid
Settings
56
Cluster on Die Early Snoop
Enable Mode
Disable Enable
Auto Auto
Auto Enable
Disable Auto
Disable Disable
Auto Disable
Enable Disable
Enable Auto
Enable Enable