In March 2026, NVIDIA/TensorRT-LLM delivered significant enhancements to performance profiling and distributed execution. The team added Nsight options support for RayExecutor, profiling via collective RPC, a new target_ranks parameter for asynchronous calls, and start/stop profiling APIs, equipping engineers with richer observability and tunable parallelism.

In 2025-08 (Volcengine/verl), delivered a focused documentation fix for Nsight Profiling terminology. Corrected the configuration key from 'profile' to 'profiler' in nsight_profiling.md to reflect the intended profiling parameter, improving clarity and accuracy in the profiling guide. This aligns docs with code and reduces potential user misconfiguration. Commits: b4a410197cf3fbd2dadad93bc91976ae09db66b7; ddb27ef2b82a33377212e1b5f3e8a7df28c745f5 (both: [doc] fix: fix a documentation typo for nsys (#3214)).

July 2025 monthly summary for volcengine/verl focusing on profiling enhancements and observability. Delivered two profiling-related features and improvements with a strong emphasis on performance visibility and data quality. Key deliverables include (1) Profiling Framework Modernization and Nsight Profiling Documentation — centralized profiler configuration across VERL workers, standardized start/stop profiling, consolidation of profiler config for actor_rollout_ref, and updated Nsight profiling docs clarifying options (all_ranks, ranks, discrete) and output file naming conventions (commits 1dfc1359dae35d1f3942d9d35aa66e0fc7275fb7; ada82bb719e4d15ed4974f118bc86ec4d78c871d). (2) Continuous Profiling Step Consolidation — introduced trainer.profile_continous_steps to merge continuous profiling steps into a single database for better visibility between steps (commit 4a651f542528e2b5e311543b7488cb3730a0252e). No major bugs fixed this month. Overall impact: streamlined profiling instrumentation, consistent cross-worker profiling data, and a unified data store that accelerates performance diagnostics and optimization. Technologies and skills demonstrated: performance profiling tooling, Nsight integration, configuration management, documentation contribution, and cross-team collaboration."