Vibe Parallel Task Decomposition

vibe-parallel-task-decomposition

Large tasks are often collections of independent subtasks hiding behind a sequential mental model. Find the parallelism.

When to Use This Skill

• Facing a task with 5+ subtasks
• Multiple files need changes that don't depend on each other
• Implementation plan has steps that could run concurrently
• User asks to "speed this up" or "parallelize"

When NOT to Use This Skill

• Tasks with fewer than 3 subtasks
• All subtasks depend on each other sequentially
• Changes are all in the same file
• The overhead of coordination exceeds the benefit

Steps

1. List all subtasks from the plan or requirements

1. Build dependency graph — For each pair of tasks, ask:

• Do they modify the same file? → dependent
• Does task B need output from task A? → dependent
• Do they share mutable state? → dependent
• Otherwise → independent (can parallelize)

1. Group into batches:

• Batch 0: Tasks with no dependencies (run first, in parallel)
• Batch 1: Tasks that depend only on Batch 0 (run after Batch 0, in parallel)
• Batch N: Continue until all tasks assigned

1. Set parallelism limit — Max 4-6 concurrent agents (beyond this, coordination overhead dominates)

1. Create dispatch plan:

Output Format

Parallel Task Decomposition

Total Tasks: X Batches: Y Max Parallelism: Z agents Estimated Speedup: ~Nx vs sequential

Dependency Graph

Task A ──→ Task D
Task B ──→ Task D
Task C (independent)
Task D ──→ Task F
Task E (independent)

Dispatch Plan

| Batch | Tasks | Parallelism | Dependencies | |-------|-------|-------------|-------------| | 0 | A, B, C, E | 4 | None | | 1 | D | 1 | A, B | | 2 | F | 1 | D |

Per-Task Assignments

• Task A: [files], [description], [acceptance test]
• Task B: [files], [description], [acceptance test]

Integration Order

After all batches complete, integrate in order: [A, B, C, E] → D → F

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: ash1794
• Source: ash1794/vibe-engineering
• License: MIT

Install and usage instructions live in the source repository linked above.