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.TH NUMA 7 2021-03-22 "Linux" "Linux Programmer's Manual"
.SH NAME
numa \- overview of Non-Uniform Memory Architecture
.SH DESCRIPTION
Non-Uniform Memory Access (NUMA) refers to multiprocessor systems
whose memory is divided into multiple memory nodes.
The access time of a memory node depends on
the relative locations of the accessing CPU and the accessed node.
(This contrasts with a symmetric multiprocessor system,
where the access time for all of the memory is the same for all CPUs.)
Normally, each CPU on a NUMA system has a local memory node whose
contents can be accessed faster than the memory in
the node local to another CPU
or the memory on a bus shared by all CPUs.
.SS NUMA system calls
The Linux kernel implements the following NUMA-related system calls:
.BR get_mempolicy (2),
.BR mbind (2),
.BR migrate_pages (2),
.BR move_pages (2),
and
.BR set_mempolicy (2).