1660236
Description
Mind Map by ealexandermolina, updated more than 1 year ago
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Created by ealexandermolina
over 10 years ago
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An Overview of Non-Uniform
Memory Access
- These systems required modified operating-system kernels with NUMA support that explicitly
understood the topological properties of the system’s memory.
- These products had to modify the Linux kernel
to support NUMA
- Processors are so fast they usually require memory
to be directly attached to the socket they are on.
- it requires the traversal of the memory
interconnect first.
- These products had to modify the Linux kernel
to support NUMA
- NUMA systems today are mostly encountered on
multisocket systems.
- non-NUMA Linux system
- Zones are used to describe memory ranges
required required to support devices that are not
able to perform DMA
- to all memory locations. Zones are also used to mark
memory for other special needs.
- Requires explicit mappings for access by the
kernel (HIGHMEM).
- Zones are used to describe memory ranges
required required to support devices that are not
able to perform DMA
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