Module expert_tier 

Structs

ArenaSlot

A destination slot in the residency ring: which slab, which slot within it.

ExpertResidency

The six sub-buffer device addresses (+ scalars) of one resident expert — exactly what the ptr-table patcher writes into the shadow tables.

PosixTier

Deterministic bounce oracle: pread the record (no O_DIRECT) into a host buffer, copy_h2d into a per-slot device buffer, stream-synced. This is the reference every other tier must match byte-for-byte.

UmaArenaTier

The zero-copy path: O_DIRECT the record straight into the pinned arena slot; the returned addresses point INTO the arena (GPU-addressable at the same VA), no copy_h2d.

Enums

TierKind

Traits

ExpertTier

Fetch an expert record into a slot; return the addresses to patch.

Functions

open_tier

Open the tier named by backend over a built store:

read_device

Copy len bytes from a device VA to a fresh host Vec (test/verify helper).