Support random ops in transparent pipelining

[rostan-t]

Category:

New feature (non-breaking change which adds functionality)

Description:

This PR add support for random operators in transparent pipelining, ensuring parity between eager and compiled modes. When parity is not possible, operators fall back to eager mode when detected during tracing, or error out if a discrepancy happens after tracing.

Additional information:

Affected modules and functionalities:

Dynamic mode, transparent pipelining

Key points relevant for the review:

• Is the parity between compiled and eager mode preserved?
• Are there cases where we could be less conservative?

Tests:

• Existing tests apply
  • test_compile.py
• New tests added
  • Python tests
  • GTests
  • Benchmark
  • Other
• N/A

Checklist

Documentation

• Existing documentation applies
• Documentation updated
  • Docstring
  • Doxygen
  • RST
  • Jupyter
  • Other
• N/A

Transparent pipelining doesn't have documentation yet.

DALI team only

Requirements

• Implements new requirements
• Affects existing requirements
• N/A

REQ IDs: N/A

JIRA TASK: DALI-4670

[greptile-apps]

Greptile Summary

This PR adds random-operator support to transparent pipelining. The main changes are:

• Compiled RNG tracking and random-state injection for pipeline graphs.
• Eager fallback and runtime checks for unsupported random-call patterns.
• RNG state helpers for lazy advancement, snapshots, and validation.
• Tests for compiled/eager parity, fallback behavior, RNG reuse, and GPU random ops.

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.

Important Files Changed

Filename	Overview
dali/python/nvidia/dali/experimental/dynamic/_compile.py	Adds compiled RNG ownership, pruning, call-order checks, state syncing, and graph wiring for random operators.
dali/python/nvidia/dali/experimental/dynamic/_ops.py	Routes random-state argument creation through shared RNG helper functions.
dali/python/nvidia/dali/experimental/dynamic/random.py	Refactors RNG state handling and adds helpers for drawn random-state tensors.
dali/test/python/experimental_mode/test_compile.py	Adds compiled random parity tests for multiple RNGs, fallback, reuse, epochs, and GPU execution.
dali/test/python/experimental_mode/test_random.py	Updates RNG tests for the helper-based state path and adds coverage for advance.

_{Reviews (3): Last reviewed commit: "Add compiled rng tests" | Re-trigger Greptile}

[rostan-t]

!build

[dali-automaton]

CI MESSAGE: [57815527]: BUILD STARTED

[dali-automaton]

CI MESSAGE: [57815527]: BUILD PASSED