dispenso::ThreadGroup Struct Reference

A scheduling group of CPUs for fork-join thread pool assignment. More...

#include <cpu_set.h>

Public Attributes
std::vector< int32_t >	cpus
	CPU IDs in this group (sorted)
CpuSet	affinityMask
	Pre-built CpuSet for binding threads in this group.

Detailed Description

A scheduling group of CPUs for fork-join thread pool assignment.

Thread groups are the fundamental scheduling and wake unit. Each group:

• Contains at most DISPENSO_MAX_GROUP_SIZE threads (configurable)
• Is L3-coherent (all CPUs share an L3 cache)
• Never splits an L2 cache group (SMT siblings stay together)
• Stays within L3 cache boundaries when possible

Groups are built bottom-up from cache topology: L2 atoms are packed into groups within L3 boundaries. On systems without cache topology detection, CPUs are chunked contiguously by maxGroupSize.

See also

CpuSet::buildThreadGroups()

Definition at line 361 of file cpu_set.h.

Member Data Documentation

affinityMask

CpuSet dispenso::ThreadGroup::affinityMask

Pre-built CpuSet for binding threads in this group.

Definition at line 363 of file cpu_set.h.

cpus

std::vector<int32_t> dispenso::ThreadGroup::cpus

CPU IDs in this group (sorted)

Definition at line 362 of file cpu_set.h.

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The documentation for this struct was generated from the following file:

• /github/workspace/dispenso/cpu_set.h