Supermicro X11DPG-OT-CPU - Page 77

Chapter 4: BIOS
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• Number of IIO
• Current UPI Link Speed
• Current UPI Link Frequency
• UPI Global MMIO Low Base/Limit
• UPI Global MMIO High Base/Limit
• UPI PCI-E Confi guration Base/Size
Degrade Precedence
Use this feature to select the degrading precedence option for Ultra Path Interconnect
connections. Select Topology Precedent to degrade UPI features if system options are in
confl ict. Select Feature Precedent to degrade UPI topology if system options are in confl ict.
The options are Topology Precedence and Feature Precedence.
Link L0p Enable
Select Enable to enable Link L0p. The options are Disable, Enable, and Auto.
Link L1 Enable
Select Enable to enable Link L1 (Level 1 link). The options are Disable, Enable, and Auto.
IO Directory Cache (IODC)
Select Enable for the IODC (I/O Directory Cache) to generate snoops instead of generating
memory lockups for remote IIO (InvIToM) and/or WCiLF (Cores). Select Auto for the IODC to
generate snoops (instead of memory lockups) for WCiLF (Cores). The options are Disable,
Auto, Enable for Remote InvItoM Hybrid Push, InvItoM AllocFlow, Enable for Remote
InvItoM Hybrid AllocNonAlloc, and Enable for Remote InvItoM and Remote WViLF.
Isoc Mode
Select Enable to enable Isochronous support to meet QoS (Quality of Service) requirements.
This feature is especially important for Virtualization Technology. The options are Disable,
Enable, and Auto.
SNC (Sub NUMA Cluster)
Select Enable for Sub-NUMA (Non-uniform memory access) Cluster support. Select Auto for
1-cluster or 2-cluster support depending on the satuts of IMC (Integrated Memory Controller)
Interleaving. The options are Disable, Enable, and Auto.
Stale AtoS (A to S)
Select Enable to remove the contents and the structures of the fi les that are no longer
needed in the remote host server but are still in use by the local client machine from
Directory A to Directory S in the NFS (Network File System) to optimize system performance.
The options are Disable, Enable, and Auto.