MSI MS-9282 User Manual page 69

among the processors. The operating system is then unable to use NUMA
optimizations, and the memory space is treated as if the system were an SMP
system.
SW M em Hole Remap p
This setting enables the software to remap the physical memory to an address
higher than 00E0.
IOM MU
AMD64, one of the 64-bit architectures, contains a device called the IOMMU
(Input/Output Memory Management Unit). The IOMMU allows 32-bit devices to
see all of the (64-bit addressed) main memory although with a 32-bit address
bus you can only address a 32-bit address space. It is a MMU that translates
DMA virtual addresses to real physical addresses.
Size
This setting specifies the memory size for IOMMU.
ACPI SRAT Table
The Static Resource Affinity Table (SRAT) can be used to describe the physical
location of processors and memory in large-scale systems (such as CC-NUMA)
to the Microsoft W indows Server 2003 operating system, allowing threads and
memory to be grouped in an optimal manner.
ECC Options
ECC Mode
If all memory in the system supports ECC, enabling this will initial scrub DRAM
and enable system requests to DRAM to be checked and/or corrected.
ECC Error Checking
This setting enables/disables ECC (Error Correction Code) checking, a method
BIOS Setup
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