DELL 2 x Intel Xeon E7-4860 338-BFMX 用户手册
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338-BFMX
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Datasheet Volume 2 of 2
IODC is supported only in 4 socket configurations with 2 IOH or less. It is also not
supported with 8 socket tracker modes 4 and 5.
supported with 8 socket tracker modes 4 and 5.
IODC and DAS features are orthogonal. They can not be supported together.
DAS targets memory latency improvements for snoop bound topologies and IODC
targeting streams memory bandwidth improvement. 4/2 sockets topologies are not
expected to benefit from DAS since the latency is memory bound. Similarly streams
bandwidths for 8 socket topologies are limited by Intel QPI utilization and are unlikely
to improve with IODC.
targeting streams memory bandwidth improvement. 4/2 sockets topologies are not
expected to benefit from DAS since the latency is memory bound. Similarly streams
bandwidths for 8 socket topologies are limited by Intel QPI utilization and are unlikely
to improve with IODC.
Also DAS feature is beneficial for 8 socket topology where snoop latency is the
bottleneck and IODC feature is beneficial for 4 socket topologies where memory
bandwidth is a bigger concern.
bottleneck and IODC feature is beneficial for 4 socket topologies where memory
bandwidth is a bigger concern.
All inter-socket mirroring configurations will need to disable IODC.
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