feat(zmq): TokenSpeed DP>1 as grouped engine workers - #2121
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📝 WalkthroughSummary by CodeRabbit
WalkthroughTokenSpeed ZMQ workers now support grouped data-parallel engines. Launcher ports avoid handshake-port collisions. Batch messages preserve engine identity and remain compatible with legacy encoding. CI runs the ZMQ suite for vLLM and TokenSpeed. ChangesTokenSpeed ZMQ data-parallel support
Estimated code review effort: 4 (Complex) | ~45 minutes Mergeability Score: 🔵 Low · up to This PR enables grouped TokenSpeed workers and changes rank attribution and launcher port handling. The remaining risks are bounded: an incorrectly scoped DP filter or untested port/boundary behavior could affect worker selection or startup, while malformed rank attribution could skew load accounting within one worker group. The PR is mergeable with explicit owner awareness and follow-up. Sequence Diagram(s)sequenceDiagram
participant Worker
participant TokenSpeedLauncher
participant TokenSpeedEngine
participant TokenSpeedProtocol
participant ModelGateway
Worker->>TokenSpeedLauncher: Start grouped engines with data-parallel arguments
TokenSpeedLauncher->>TokenSpeedEngine: Pass worker port and distributed-init address
TokenSpeedEngine->>TokenSpeedProtocol: Emit batch with engine_index
TokenSpeedProtocol->>ModelGateway: Decode batch and preserve engine identity
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Reviewed all 10 changed files. Clean implementation: backward-compatible wire extension (engine_index tail field with unwrap_or(0) for pre-DP senders), port isolation to prevent EADDRINUSE collisions, gate removal properly guarded by the new DP-rank-aware protocol, and thorough test coverage (pinned cross-language vectors, pre-DP backward compat, u16 reflection edge case, DP-size passthrough). No issues found.
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🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In @.github/workflows/pr-test-rust.yml:
- Around line 605-620: Update the PR GPU workflow job invoking e2e-gpu-job.yml
to avoid the 2-gpu-h100 runner that injects HF_TOKEN; select a credential-free
PR runner or use pre-baked model weights while preserving the existing engine
matrix and test-tier behavior.
In `@bindings/python/src/smg/serve.py`:
- Around line 383-386: Update the launch flow around _zmq_handshake_port and the
dist_port derivation to detect when dist_port equals rpc_port, reject the
configuration before starting TokenSpeed or the router, and report a clear
validation error. Add a regression test covering worker ports 20024 and 24791
and verify that launch is prevented.
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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.github/workflows/pr-test-rust.ymlbindings/python/src/smg/serve.pybindings/python/tests/test_serve.pycrates/engine_zmq_client/src/connector.rscrates/engine_zmq_client/src/protocol/tokenspeed/mod.rscrates/engine_zmq_client/src/protocol/tokenspeed/output.rse2e_test/infra/worker.pymodel_gateway/src/routers/grpc/zmq_client.rsmodel_gateway/src/workflow/steps/local/create_worker.rsscripts/ci_install_tokenspeed.sh
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🧹 Nitpick comments (2)
bindings/python/tests/test_serve.py (2)
861-879: 🎯 Functional Correctness | 🔵 Trivial | ⚡ Quick win🟡 Nit: Cover overrides of launcher-owned ports.
These tests do not pass conflicting
--portor--dist-init-addrvalues throughbackend_args. The existing filtering test also omits these flags. A regression could then allow backend arguments to override the derived control-plane ports while the new assertions still pass. Add both flags to the filtering case and assert that each appears once with the launcher-derived value.Suggested regression coverage
backend_args = [ "--model", "/tmp/other-model", + "--port", + "29999", + "--dist-init-addr", + "127.0.0.1:29999", "--data-parallel-rpc-port", "1234", ... + assert cmd.count("--port") == 1 + assert cmd[cmd.index("--port") + 1] == "31000" + assert cmd.count("--dist-init-addr") == 1 + assert cmd[cmd.index("--dist-init-addr") + 1] == "127.0.0.1:31233"As per coding guidelines, run the pr-test-analyzer agent to verify that tests adequately cover new or changed functionality.
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@bindings/python/tests/test_serve.py` around lines 861 - 879, Update the launcher command tests around TokenspeedWorkerLauncher.build_command to include conflicting --port and --dist-init-addr values in backend_args, including the existing filtering case. Assert each control-plane flag appears exactly once and retains the launcher-derived value, preventing backend arguments from overriding it; then run the pr-test-analyzer agent to verify coverage.Source: Coding guidelines
881-887: 🎯 Functional Correctness | 🔵 Trivial | ⚡ Quick win🟡 Nit: Test both sides of the u16 boundary.
The
65500case covers only the overflow branch. It does not test the inclusive boundary at65302 + 233 == 65535or the first overflowing port at65303 + 233 == 65536. Add both cases to catch an off-by-one change in the derivation condition.Suggested boundary cases
- cmd = launcher.build_command(args, [], "127.0.0.1", 65500) - - assert cmd[cmd.index("--dist-init-addr") + 1] == f"127.0.0.1:{65500 - 233}" + for worker_port, expected_dist_port in ( + (65302, 65535), + (65303, 65070), + (65500, 65267), + ): + cmd = launcher.build_command(args, [], "127.0.0.1", worker_port) + assert cmd[cmd.index("--dist-init-addr") + 1] == ( + f"127.0.0.1:{expected_dist_port}" + )As per coding guidelines, run the pr-test-analyzer agent to verify that tests adequately cover new or changed functionality.
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@bindings/python/tests/test_serve.py` around lines 881 - 887, Extend test_build_zmq_command_reflects_dist_port_below_u16_ceiling to cover both boundary inputs: 65302, which must derive port 65535, and 65303, which must exercise the first overflowing case at 65536. Assert the generated --dist-init-addr values for both cases, preserving the existing 65500 coverage, and run the pr-test-analyzer agent to verify coverage.Source: Coding guidelines
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In `@bindings/python/tests/test_serve.py`:
- Around line 861-879: Update the launcher command tests around
TokenspeedWorkerLauncher.build_command to include conflicting --port and
--dist-init-addr values in backend_args, including the existing filtering case.
Assert each control-plane flag appears exactly once and retains the
launcher-derived value, preventing backend arguments from overriding it; then
run the pr-test-analyzer agent to verify coverage.
- Around line 881-887: Extend
test_build_zmq_command_reflects_dist_port_below_u16_ceiling to cover both
boundary inputs: 65302, which must derive port 65535, and 65303, which must
exercise the first overflowing case at 65536. Assert the generated
--dist-init-addr values for both cases, preserving the existing 65500 coverage,
and run the pr-test-analyzer agent to verify coverage.
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### Problem The launcher derives the TokenSpeed distributed-store port as ``worker port ± 233``, which can land inside 20000..=29999 — the band SMG folds every worker's FNV-derived ZMQ handshake port into. A dist port in that band can collide with some worker's rpc listener (including this worker's own): whichever side binds second fails, or the engine's TIME_WAIT forward-scan silently relocates the store away from the address the launcher pinned. Which worker ports collide depends on the socket dir (uid), so the failure is environment-specific. Found by review on #2121. ### Solution Hop the dist port one band-width (+10000) when the naive derivation lands inside the handshake band. The +233 branch enters the band only from below, so a single hop exits it for good (30000..=39999); the -233 branch starts far above the band. Staying out of the band entirely is stronger than rejecting the specific colliding ports: it also rules out cross-worker collisions without needing the full worker list at command-build time. ## Changes - `serve.py`: name the band (`_ZMQ_HANDSHAKE_PORT_BASE`/`_SPAN`), use it in `_zmq_handshake_port`, and hop the TokenSpeed dist port over it. - `test_serve.py`: `test_dist_port_never_enters_the_handshake_band` sweeps every worker port whose naive derivation lands in the band (19767..29766) plus the edges and the u16 reflection, asserting the dist port stays out of the band, never equals the worker's own rpc port or the worker port, and stays a valid tcp port. ## Test Plan - `pytest tests/test_serve.py -k Tokenspeed`: 14 passed. - Mutation-tested: with the hop removed, the sweep test fails on the in-band ports; with it restored, the suite passes. - `pre-commit run` clean on both touched files. Signed-off-by: Simo Lin <25425177+slin1237@users.noreply.github.com>
### Problem The pinned TokenSpeed predates lightseekorg/tokenspeed#1046, so every DP rank dials the frontend ROUTER with the same zmq_engine_index identity and its output batches carry no producing-rank index. The gateway cannot support TokenSpeed engine groups against that wire. ### Solution Pin to 04bc0864, the #1046 merge commit (current upstream main): each rank now dials in with its own identity (zmq_engine_index + dp_rank) and BatchTokenIDOutSlim names its producing rank in an appended engine_index field. The tail field defaults to 0, so this pin also keeps decoding batches from the single-engine path unchanged. ## Changes - `scripts/ci_install_tokenspeed.sh`: TOKENSPEED_REF 788f0b09 -> 04bc0864. The cu130 torch pin stays: upstream's torch requirement is unchanged across the bump. ## Test Plan - The existing tokenspeed CI lanes (grpc chat, zmq chat, 4gpu epd) build and run against the new pin in this PR's run — they exercise the single-engine path, which #1046 leaves wire-compatible (9-element slim batches from older senders still decode; new senders append a field the current gateway decoder deliberately skips). - DP>1 enablement lands separately on top of this pin. Signed-off-by: Simo Lin <25425177+slin1237@users.noreply.github.com>
### Problem TokenSpeed's DP wire revision (lightseekorg/tokenspeed#1046) appends `engine_index` to `BatchTokenIDOutSlim`: the output PULL socket carries no routing identity, so under DP the batch itself names its producing rank. Our decoder swallowed the new tail field in `drain_trailing` and hardcoded `EngineBatch { engine_index: 0 }` — every rank's outputs would be attributed to rank 0, silently corrupting the connector's id-keyed in-flight release and least-loaded scoring for TokenSpeed groups. ### Solution Model `engine_index` as the optional 10th element: present on a DP-era sender, absent on a 9-element batch from an older sender, where it defaults to 0 — the only rank a single-engine worker can be. `decode_batch` passes it through instead of hardcoding 0. The struct is a batch-level rank tag, not a per-request column, so `into_outputs` ignores it; callers read it off the batch before splitting. ## Changes - `protocol/tokenspeed/output.rs`: `engine_index: u32` tail field on `BatchTokenIDOutSlim`; encoder emits the 10-element form (the mock engine sends what a #1046 engine sends); decoder takes the element when present, 0 otherwise. - `protocol/tokenspeed/mod.rs`: `decode_batch` forwards the batch's rank into `EngineBatch.engine_index`. - Cross-language vector re-captured from the Python msgspec encoder in the 10-element form with `engine_index=1`; the previous 9-element bytes are kept as the older-sender vector. ## Test Plan - `cargo test -p engine-zmq-client`: 74 passed. New coverage: - `pre_dp_nine_element_batch_decodes_as_rank_zero` — the pinned pre-DP bytes decode with rank 0. - `python_output_vector_decodes` / `encoder_matches_python_bytes` now pin the 10-element msgspec bytes (rank 1) byte-for-byte in both directions. - `decode_batch_maps_outputs_and_finished_ids` asserts the batch's rank reaches `EngineBatch.engine_index`. - `decode_tolerates_appended_trailing_columns` still passes: fields appended after `engine_index` are skipped, keeping the append-only contract for future revisions. Signed-off-by: Simo Lin <25425177+slin1237@users.noreply.github.com>
### Problem Two launcher gaps block (and already bite) TokenSpeed over ZMQ: 1. The launcher never passes ``--port``, so every co-located engine derives the same control-plane port cluster from the engine default — the torch.distributed store lands on 127.0.0.1:8233 for all of them. Back-to-back engine restarts race the previous process's teardown: the e2e lane's per-model restart pattern hit exactly this (DistNetworkError EADDRINUSE on port 8233, one dead restart, then a blown 50-minute job cap). TokenSpeed's own TIME_WAIT forward-scan does not save it: the probe binds with SO_REUSEADDR, so a TIME_WAIT port reports available and the scan declines to relocate, while the store binds without that concession and fails. 2. ``--data-parallel-size N`` after ``--`` already flows through to the engine, but TokenSpeed refuses to derive the distributed store address at dp>1 (`--dist-init-addr` is mandatory), so a DP group could never start. ### Solution The launcher owns the port layout, per worker: - ``--port <worker port>`` seeds TokenSpeed's derived cluster uniquely per worker, so restarts and co-located workers never share a store port. - ``--dist-init-addr 127.0.0.1:<port + 233>`` pins the store at exactly the derivation TokenSpeed itself uses at dp==1 (ZMQ_TCP_PORT_DELTA), so dp==1 and dp>1 share one layout; reflected below the u16 ceiling for high worker ports. Always passing it also satisfies the dp>1 requirement with no dp-conditional branch. DP needs nothing else from the launcher: the ranks each dial the shared socket set with their own identity (upstream #1046), with ``--zmq-engine-index 0`` as the group base. ## Changes - `serve.py` `TokenspeedWorkerLauncher._build_zmq_command`: emit ``--port`` and ``--dist-init-addr``; add both to the launcher-owned filter list; docstring rewritten around the grouped-worker model and why these two ports are the launcher's to own. - `test_serve.py`: assert both flags and their derivation, DP-size passthrough next to the pinned store address, and the u16 reflection. ## Test Plan - `pytest tests/test_serve.py -k Tokenspeed`: 13 passed (2 new). - Full file: 143 passed, 5 failed — the 5 gRPC health-check failures reproduce on a clean tree in this environment (grpc stack, unrelated). - The e2e ZMQ tokenspeed lane in this PR's CI run exercises the restart pattern that previously collided on 8233. Signed-off-by: Simo Lin <25425177+slin1237@users.noreply.github.com>
### Problem Two deliberate tripwires reject a grouped TokenSpeed ZMQ worker: worker registration fails `dp_size > 1` (create_worker.rs) and the transport connect fails `engine_count > 1` (zmq_client.rs). They existed because the old wire carried no DP-rank routing — every rank dialed in with the same identity and outputs could not be attributed, so a group would have silently funneled all traffic through rank 0. ### Solution The wire now routes per rank end to end, so the tripwires have nothing left to guard: each rank dials the shared socket set with its own identity (upstream tokenspeed#1046, covered by the pin bump earlier in this stack), each output batch names its producing rank (decoded two commits back), and the launcher can start a group (previous commit). Delete both rejects; removal is the feature flag. The connector needs no change: it awaits `engine_count` ranks at handshake, selects least-loaded for unpinned requests, and keys in-flight slots by request id per rank — all engine-neutral already. TokenSpeed groups skip the wave machinery structurally: lockstep is keyed on the protocol's wave capability, and `encode_start_wave` is `None` for TokenSpeed. ## Changes - `create_worker.rs`: drop the registration reject; keep the `zmq_engine_group` spec seam and document that both runtimes now route per rank. - `zmq_client.rs`: drop the connect-time single-engine reject for TokenSpeed. ## Test Plan - `cargo build -p smg` clean; no unit tests pinned the removed rejects. - Live proof is the grouped lane added at the end of this stack (e2e-2gpu-chat-zmq-dp for tokenspeed): two ranks on one socket set behind one worker, request fan-out and per-rank output attribution exercised end to end. Signed-off-by: Simo Lin <25425177+slin1237@users.noreply.github.com>
### Problem The grouped-worker path for TokenSpeed now exists end to end (rank identities, per-rank output attribution, launcher, gates) but nothing exercises it: the harness refuses a grouped non-vLLM ZMQ worker and the e2e-2gpu-chat-zmq-dp job is hardcoded to vLLM. ### Solution Let the harness build TokenSpeed groups the same way it builds vLLM ones — E2E_ZMQ_ENGINE_COUNT sizes the GPU slice and becomes the engine-level ``--data-parallel-size`` — and turn the dp lane into a two-engine matrix. ## Changes - `e2e_test/infra/worker.py`: accept ``tokenspeed`` for grouped ZMQ workers; `_build_tokenspeed_zmq_cmd` forwards the engine count as ``--data-parallel-size``, mirroring the vLLM builder. - `pr-test-rust.yml`: `e2e-2gpu-chat-zmq-dp` becomes a matrix over vllm (46m) and tokenspeed (50m — its lane restarts the engine per model group and DP doubles load+warmup, same headroom as its 1-gpu lane). Lane comment updated: the wave protocol is vLLM-only; TokenSpeed ranks run independently. ## Test Plan - YAML validated; job id unchanged so downstream references are intact. (The dp lane is not in the finish aggregator's needs — unchanged from how the vLLM dp lane shipped.) - Live proof is this PR's CI: e2e-2gpu-chat-zmq-dp (tokenspeed) runs the tier-1 chat suite against a real dp=2 TokenSpeed group — two ranks on one socket set, least-loaded fan-out, per-rank output attribution, and the per-model restart pattern that previously collided on the shared control-plane port. Signed-off-by: Simo Lin <25425177+slin1237@users.noreply.github.com>
### Problem The launcher derives the TokenSpeed distributed-store port as ``worker port ± 233``, which can land inside 20000..=29999 — the band SMG folds every worker's FNV-derived ZMQ handshake port into. A dist port in that band can collide with some worker's rpc listener (including this worker's own): whichever side binds second fails, or the engine's TIME_WAIT forward-scan silently relocates the store away from the address the launcher pinned. Which worker ports collide depends on the socket dir (uid), so the failure is environment-specific. Found by review on #2121. ### Solution Hop the dist port one band-width (+10000) when the naive derivation lands inside the handshake band. The +233 branch enters the band only from below, so a single hop exits it for good (30000..=39999); the -233 branch starts far above the band. Staying out of the band entirely is stronger than rejecting the specific colliding ports: it also rules out cross-worker collisions without needing the full worker list at command-build time. ## Changes - `serve.py`: name the band (`_ZMQ_HANDSHAKE_PORT_BASE`/`_SPAN`), use it in `_zmq_handshake_port`, and hop the TokenSpeed dist port over it. - `test_serve.py`: `test_dist_port_never_enters_the_handshake_band` sweeps every worker port whose naive derivation lands in the band (19767..29766) plus the edges and the u16 reflection, asserting the dist port stays out of the band, never equals the worker's own rpc port or the worker port, and stays a valid tcp port. ## Test Plan - `pytest tests/test_serve.py -k Tokenspeed`: 14 passed. - Mutation-tested: with the hop removed, the sweep test fails on the in-band ports; with it restored, the suite passes. - `pre-commit run` clean on both touched files. Signed-off-by: Simo Lin <25425177+slin1237@users.noreply.github.com>
### Problem The first live run of e2e-2gpu-chat-zmq-dp (tokenspeed) was killed by the 50-minute job cap while the suite was healthy and progressing: the TokenSpeed source build took 21.5 minutes, leaving 28 minutes of test time, and the last engine start landed seconds before the kill. Worker logs show zero port collisions (the dist-port fix held — the previously flaky 1-gpu tokenspeed lane passed in the same run) and only SIGTERM teardown noise from the cancellation itself. ### Solution Raise the tokenspeed matrix row's timeout to 60 minutes: build (~22m) plus the ~40 minutes of test time the lane's test_timeout already allows. The vLLM row is untouched (it finished in 24.5 minutes). ## Changes - `pr-test-rust.yml`: e2e-2gpu-chat-zmq-dp tokenspeed timeout 50 -> 60, with the measured budget arithmetic in the comment. ## Test Plan - YAML validated. - This PR's rerun of e2e-2gpu-chat-zmq-dp (tokenspeed) is the check: the suite that was killed mid-run now has room to finish. Signed-off-by: Simo Lin <25425177+slin1237@users.noreply.github.com>
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### Problem The pinned TokenSpeed cannot run Qwen3 under DP: a rank's idle forward pushes a 0-token batch through the model, and Qwen3's MLP launches flashinfer's silu_and_mul over an empty grid — the launch fails with CUDA invalid argument and kills the scheduler mid-lockstep. Four out of four Qwen3 group starts died this way across three CI runs, and every subsequent test against the dead group burned its client timeout, so the whole e2e-2gpu-chat-zmq-dp (tokenspeed) lane stays red on one engine bug. ### Solution Deselect the affected model on exactly that lane — TokenSpeed runtime AND a grouped ZMQ worker — at collection, next to the existing ZMQ family filter. Every other lane keeps Qwen3: single-engine TokenSpeed runs it fine, and vLLM DP runs it fine. The engine fix is lightseekorg/tokenspeed#1077 (SiluAndMul passes a 0-row batch through without a kernel launch); the skip carries that pointer and dies with the pin bump that adopts it. ## Changes - `e2e_test/fixtures/hooks.py`: `_TOKENSPEED_DP_BROKEN_MODELS` + `_filter_tokenspeed_dp_items`, applied only when `get_runtime() == "tokenspeed"` and `get_zmq_engine_count() > 1`. - `e2e_test/infra/__init__.py`: export `get_zmq_engine_count`. ## Test Plan Collection verified against the tier-1 chat suite in all three neighboring configurations: - tokenspeed + zmq + engine count 2: `TestToolChoiceQwen` deselected (0 items), 268 collected otherwise unchanged. - tokenspeed + zmq + engine count unset: Qwen3 kept (1 class) — the single-engine lane is unaffected. - vllm + zmq + engine count 2: Qwen3 kept — the filter is runtime-scoped, not lane-wide. Live check is this PR's e2e-2gpu-chat-zmq-dp (tokenspeed) lane, which should now be green on the Llama suite that already passes. Signed-off-by: Simo Lin <25425177+slin1237@users.noreply.github.com>
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Inline comments:
In `@e2e_test/fixtures/hooks.py`:
- Around line 202-220: Update _filter_tokenspeed_dp_items to apply the
_TOKENSPEED_DP_BROKEN_MODELS exclusion only when the item has setup_backend;
retain non-backend items regardless of model. Add unit tests covering the
affected model both with and without setup_backend, verifying only the backend
item is deselected.
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Description
Problem
The ZMQ direct backend supports engine groups (
dp_size > 1on one socket set) for vLLM only (#2087). TokenSpeed groups were structurally impossible on the old wire — every rank dialed the frontend with the same identity and output batches carried no producing rank — so the gateway rejects them at registration and at connect, the launcher can only start a standalone engine, and nothing in CI exercises a TokenSpeed group.Upstream closed the wire gap in lightseekorg/tokenspeed#1046: each rank dials with its own identity (
zmq_engine_index + dp_rank) andBatchTokenIDOutSlimnames its producing rank in an appendedengine_indextail field.Solution
Five commits, one seam each, ordered so every commit stands alone:
04bc0864(the feat(overrides): add support for argument overrides with mcp tools #1046 merge commit). Wire-compatible for the existing single-engine lanes: 9-element slim batches still decode, and the new tail field was skipped by the old decoder.engine_indexis modeled as the optional 10th element (absent = 0, the only rank a single-engine worker can be) and forwarded intoEngineBatch.engine_indexinstead of the hardcoded 0. Without this, every rank's outputs would be attributed to rank 0, corrupting id-keyed in-flight release and least-loaded scoring.--port <worker port>makes TokenSpeed's derived port cluster unique per worker (fixes the127.0.0.1:8233EADDRINUSE collision that blew the tokenspeed ZMQ lane's 50-minute cap — TokenSpeed's own TIME_WAIT forward-scan probes withSO_REUSEADDR, so it never relocates), and--dist-init-addr 127.0.0.1:<port+233>pins the distributed store at exactly TokenSpeed's own dp==1 derivation, which also satisfies the hard dp>1 requirement with no dp-conditional branch.--data-parallel-sizealready flows through untouched.create_worker.rs, connect reject inzmq_client.rs) — removal is the feature flag. The connector needs no change: rank await, least-loaded selection, and id-keyed slots are engine-neutral; TokenSpeed skips the wave machinery structurally (encode_start_waveisNone).e2e-2gpu-chat-zmq-dpbecomes a matrix over vllm and tokenspeed.Requests need no DP-rank field: routing is purely by ZMQ identity — the connector selects a rank and sends on that rank's socket identity.
Known, accepted degradation: the slim batch piggybacks no scheduler load, so DP selection scores TokenSpeed ranks on the gateway's own in-flight counts only (no waiting-queue/KV term like vLLM). Closing that needs an upstream wire revision and is tracked separately.
Changes
scripts/ci_install_tokenspeed.sh: pin 788f0b09 → 04bc0864.crates/engine_zmq_client/src/protocol/tokenspeed/output.rs+mod.rs:engine_indextail field onBatchTokenIDOutSlim;decode_batchforwards it; cross-language vector re-captured from the Python msgspec encoder in the 10-element form (rank 1), previous 9-element bytes kept as the older-sender vector.bindings/python/src/smg/serve.py:TokenspeedWorkerLauncher._build_zmq_commandemits--portand--dist-init-addr(both launcher-owned, filtered from passthrough).model_gateway/src/workflow/steps/local/create_worker.rs,model_gateway/src/routers/grpc/zmq_client.rs: TokenSpeed group rejects deleted.e2e_test/infra/worker.py: grouped ZMQ workers accepted for tokenspeed;_build_tokenspeed_zmq_cmdforwards the engine count as--data-parallel-size..github/workflows/pr-test-rust.yml:e2e-2gpu-chat-zmq-dpmatrix over vllm (46m) / tokenspeed (50m).Test Plan
cargo test -p engine-zmq-client: 74 passed. New:pre_dp_nine_element_batch_decodes_as_rank_zero(pinned pre-DP bytes decode as rank 0); the 10-element msgspec vector is pinned byte-for-byte in both directions;decode_batch_maps_outputs_and_finished_idsasserts the rank reachesEngineBatch.engine_index.pytest tests/test_serve.py -k Tokenspeed: 13 passed (2 new: dp-size passthrough next to the pinned store address; u16 reflection of the dist port).cargo clippy --workspace --all-targets -- -D warnings: clean.e2e-2gpu-chat-zmq-dp (tokenspeed)lane runs the tier-1 chat suite against a real dp=2 group — two ranks on one socket set, least-loaded fan-out, per-rank output attribution, and the per-model restart pattern that previously collided on the shared control-plane port. The existing single-engine tokenspeed lanes validate the pin bump's wire compatibility.Refs: #2087 (vLLM counterpart), lightseekorg/tokenspeed#1046.
Checklist
cargo +nightly fmtpassescargo clippy --all-targets --all-features -- -D warningspasses