[None][chore] Removing cpp/tensorrt_llm/pybind

[Linda-Stadter]

Summary by CodeRabbit

• Refactor
  • Removed Python language bindings for core library components including batch manager, executor, runtime, and related modules. Python API access to these components is no longer available.

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Description

• Continuation of PR [None][chore] Removing pybind11 bindings and references #10550
• Removing folder cpp/tensorrt_llm/pybind containing all tensort_llm pybind11 bindings.

Test Coverage

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[Linda-Stadter]

/bot run

[tensorrt-cicd]

PR_Github #33729 [ run ] triggered by Bot. Commit: 0061b3b

[tensorrt-cicd]

PR_Github #33729 [ run ] completed with state SUCCESS. Commit: 0061b3b
/LLM/main/L0_MergeRequest_PR pipeline #26014 completed with status: 'FAILURE'

⚠️ Action Required:

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[Linda-Stadter]

/bot run

[tensorrt-cicd]

PR_Github #33743 [ run ] triggered by Bot. Commit: 0061b3b

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR completely removes the pybind11-based Python bindings infrastructure for TensorRT LLM, including the CMakeLists.txt build configuration and binding implementations across all modules (batch_manager, executor, runtime, testing, thop, userbuffers, process_group, and common utilities).

Changes

Cohort / File(s)	Summary
CMake Build Configuration cpp/tensorrt_llm/pybind/CMakeLists.txt	Removes entire CMake build configuration that assembled the Python bindings module, including pybind11 module definition, source enumeration, include paths, link libraries (torch, Python, CUDA, th_common, pg_utils), and build properties.
Batch Manager Bindings cpp/tensorrt_llm/pybind/batch_manager/{algorithms, bindings, buffers, cacheTransceiver, kvCacheConnector, kvCacheManager, kvCacheManagerV2Utils, llmRequest}.*	Removes Python bindings for batch manager components: scheduling algorithms (CapacityScheduler, MicroBatchScheduler), request/buffer management (GenericLlmRequest, DecoderInputBuffers, DecoderOutputBuffers), KV cache operations (KVCacheManager, CacheTransceiver, KvCacheConnector), and associated utility functions.
Executor Module Bindings cpp/tensorrt_llm/pybind/executor/{bindings, executor, executorConfig, request}.*	Removes Python bindings for executor functionality: core Executor class with constructor/lifecycle methods, configuration structures (ExecutorConfig, DynamicBatchConfig, SchedulerConfig, KvCacheConfig, etc.), and request/response types (Request, Response, Result, with extensive nested configurations).
Runtime Module Bindings cpp/tensorrt_llm/pybind/runtime/{bindings, hostfunc, moeBindings}.*	Removes Python bindings for runtime components: decoder/generation infrastructure (ITensor, GptDecoderBatched, DecodingInput/Output), CUDA utilities (CudaEvent, CudaStream, HostFunc), MOE load balancing (MoeLoadBalancer), and virtual memory management.
Testing & Torch Operation Bindings cpp/tensorrt_llm/pybind/{testing/modelSpecBinding, thop/bindings}.*	Removes Python bindings for test infrastructure (ModelSpec with configuration options) and torch operations (attention kernel, Helix workspace computation, MoE A2A metadata).
User Buffers & Process Group Bindings cpp/tensorrt_llm/pybind/{userbuffers, process_group}/bindings.*	Removes Python bindings for user buffer management (UBBuffer, allocation/deallocation) and process group initialization.
Common Binding Utilities cpp/tensorrt_llm/pybind/common/{bindTypes, customCasters, tllmExceptions}.*	Removes shared binding infrastructure: container binding helpers (bindList/bindSet templates), type casters for Pybind11 (OptionalRef, filesystem paths, CUDA streams, Tensors/ITensors), and exception translation (RequestSpecificException).
Main Binding Entry Point cpp/tensorrt_llm/pybind/bindings.cpp	Removes the central pybind11 module initialization that wired all submodules (batch_manager, executor, runtime, testing, thop, userbuffers, process_group), exposed enums/classes (DataType, ModelConfig, WorldConfig, SamplingConfig, MpiComm, etc.), and registered binding initializers.

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~60 minutes

Possibly related PRs

• [None][chore] Removing pybind11 bindings and references #10550: Replaces pybind11 bindings infrastructure with nanobind implementation across the same modules and file locations.

Suggested reviewers

• kaiyux
• poweiw
• QiJune
• pcastonguay
• venkywonka

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	PR description is vague and lacks specific details about why this change is needed and what the impact is.	Expand the description to explain the rationale for removing pybind bindings, expected impact on users, migration path for dependent code, and reference the continuation from PR #10550 more clearly.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	Title clearly identifies the main change: removing cpp/tensorrt_llm/pybind folder and its pybind11 bindings.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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• 📝 Generate docstrings

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[tensorrt-cicd]

PR_Github #33743 [ run ] completed with state SUCCESS. Commit: 0061b3b
/LLM/main/L0_MergeRequest_PR pipeline #26026 completed with status: 'SUCCESS'
Pipeline passed with automatic retried tests. Check the rerun report for details.

[QiJune]

LGTM