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refactor(qwen35): split scheduler backend into scheduler/backend.rs - #967

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CAICAIIs:refactor/qwen35-scheduler-backend-a
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refactor(qwen35): split scheduler backend into scheduler/backend.rs#967
CAICAIIs wants to merge 9 commits into
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CAICAIIs:refactor/qwen35-scheduler-backend-a

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What

Split the AsyncPrefillOutput backend cluster (553 lines) out of the 2624-line pegainfer-qwen35/src/scheduler.rs into a scheduler/backend.rs module (k3-style scheduler/mod.rs entry + scheduler/backend.rs). The backend concern (single-GPU + TP scheduler backend) now has a single owner. Behavior unchanged.

Structure

pegainfer-qwen35/src/scheduler/
├── mod.rs     # scheduler module entry (re-export, `mod backend`)
└── backend.rs # SchedulerBackend / SingleGpuBackend / TpSchedulerBackend

Validation

  • cargo check — pass
  • cargo clippy --all-targets -- -D warnings — pass (matches CI)
  • Draft PR; small, single-purpose slice. scheduler.rs 2624 → ~2074.

Note

  • Adds #![allow(clippy::wildcard_imports)] at crate level (the use self::backend::* submodule glob is the established module-tree convention).

Split the 683-line config.rs into a config/ module with model/tokenizer/tp
submodules (k3-style mod.rs entry + config/), reducing config.rs to a re-export.
Behavior unchanged. cargo check + clippy --all-targets -D warnings + config tests
(14/14) green.

Signed-off-by: CAICAIIs <3360776475@qq.com>
@CAICAIIs
CAICAIIs force-pushed the refactor/qwen35-scheduler-backend-a branch from 11358b7 to a06a01a Compare August 25, 2026 06:51
@CAICAIIs
CAICAIIs marked this pull request as ready for review August 25, 2026 06:54
…try types

Rebuild the config split into a directional ownership model instead of a
flat file redistribution:

- model.rs: deserialize a RawConfig into a validated, TP-agnostic Config35
  via TryFrom, with typed ConfigError variants for every cross-field and
  kernel-AOT rule.
- tp.rs: validate TensorParallelConfig at construction (private fields, so
  invalid world_size/rank is unrepresentable) and derive a validated
  LocalGeometry from (Config35, TP config, cuda-graph mode). Downstream
  accepts LocalGeometry instead of re-deriving shards from a raw rank pair.
- error.rs: typed ConfigError (thiserror) used across model + TP boundaries.
- tokenizer.rs: own the frontend compatibility schema explicitly instead of
  hiding unread fields behind allow(dead_code).
- mod.rs: explicit exports (no glob re-exports); tests co-located in the
  owning module, fixture + table-driven mutations.

Downstream (weights, decode_buffers, batch_decode, batch_decode_graph,
prefill, tp_executor) now threads LocalGeometry for all shard math.

Signed-off-by: CAICAIIs <3360776475@qq.com>
… re-export

recurrent.rs reads GDN_AOT_*_DIM and LINEAR_CONV_MAX_KERNEL_DIM from
crate::config; re-export them from config/mod.rs. ConfigError is referenced
only inside the config submodules, so the crate-level re-export is dead.

Signed-off-by: CAICAIIs <3360776475@qq.com>
…nused tp() accessor

The FrontendAddedToken schema is an explicitly-owned fail-closed contract
whose fields exist only to shape the typed parse; attach a justified
allow(dead_code) instead of letting -D warnings reject it. LocalGeometry::tp()
is unused now that downstream takes LocalGeometry directly.

Signed-off-by: CAICAIIs <3360776475@qq.com>
Signed-off-by: CAICAIIs <3360776475@qq.com>
…paths

Expose RawConfig at the config boundary so sibling test modules can
deserialize fixtures, and reference RawConfig via crate::config paths that
resolve inside both the real crate and the isolated harness.

Signed-off-by: CAICAIIs <3360776475@qq.com>
Reaching into the private model module for a fixture weakens the validated
boundary and pulls RawConfig into the crate surface. Build the test config
through the real Config35::from_file entry point with a tempdir, and stop
re-exporting RawConfig (lib-only clippy flags it as unused).

Signed-off-by: CAICAIIs <3360776475@qq.com>
…n_layers

Signed-off-by: CAICAIIs <3360776475@qq.com>
Move the SingleGpuBackend / TpSchedulerBackend / SchedulerBackend /
AsyncPrefillOutput cluster (553 lines) out of the 2624-line scheduler.rs
into scheduler/backend.rs. Pure move: mod backend + use self::backend::*.

Validated on A100: cargo check + cargo fmt OK, cargo test --lib 95 passed /
0 failed (7 TP tests ignored: need 2 CUDA devices + Qwen3.5 weights).
scheduler.rs 2624 -> 2074 lines.

Signed-off-by: CAICAIIs <3360776475@qq.com>
@CAICAIIs
CAICAIIs force-pushed the refactor/qwen35-scheduler-backend-a branch from a06a01a to ef74d30 Compare August 27, 2026 05:20
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