/parallel

/manifold:parallel - Parallel Task Execution

Execute multiple tasks in parallel using isolated git worktrees.

Usage

/manifold:parallel "task1" "task2" "task3" [options]

Options

Flag	Description
--auto-parallel	Enable automatic parallelization without confirmation
--max-parallel N	Maximum concurrent tasks (default: 4)
--verbose, -v	Show detailed output
--deep	Use deep analysis (slower but more accurate)
--timeout N	Task timeout in seconds (default: 300)
--strategy TYPE	Merge strategy: sequential, squash, rebase
--no-cleanup	Don't cleanup worktrees after completion
--dry-run	Analyze but don't execute
--file, -f FILE	Load tasks from YAML file

Process

1. Task Analysis - Parse task descriptions and identify file mentions
2. File Prediction - Predict which files each task will modify using:
   • Explicit mentions (95% confidence)
   • Pattern matching (80% confidence)
   • Module inference (70% confidence)
   • Git history (60% confidence)
   • Heuristics (50% confidence)
3. Overlap Detection - Identify file conflicts between tasks
4. Group Formation - Form safe parallel groups (no file overlap)
5. Resource Check - Verify disk, memory, CPU capacity
6. Parallel Execution - Create isolated worktrees and execute concurrently
7. Merge - Automatically merge results to main worktree
8. Cleanup - Remove temporary worktrees

Example

User: /manifold:parallel "Add login form" "Add signup form" "Add password reset" --dry-run

Response:
🔄 Analyzing tasks for parallelization...

PARALLELIZATION ANALYSIS
────────────────────────
Recommendation: ✅ PARALLELIZE (85% confidence)

Safe Parallel Groups:
  Group 1: [Add login form, Add signup form]
    └─ No file overlap detected
  Group 2: [Add password reset]
    └─ Overlaps with Group 1 on src/auth/utils.ts

Sequential Tasks: None

Estimated Speedup: 1.8x (2 parallel + 1 sequential)

ℹ️  Dry run mode - no execution performed

Configuration

Create .parallel.yaml in project root:

enabled: true
autoSuggest: true
autoParallel: false
maxParallel: 4
maxDiskUsagePercent: 90
maxMemoryUsagePercent: 85
maxCpuLoadPercent: 80
timeout: 300000
cleanupOnComplete: true
mergeStrategy: sequential

Constraints Satisfied

Constraint	Description	Implementation
B1	No merge conflicts	Overlap detection prevents file conflicts
B2	Faster than sequential	Parallel execution with resource-aware concurrency
B3	Auto-identify opportunities	Task analysis and file prediction
B4	Opt-in control	Configuration and explicit flags
T1	Clean branch state	Pre-check before worktree creation
T2	Isolated worktrees	Each task runs in separate worktree
T3	No same-file parallel	Overlap detector enforces

Execution Instructions

When this command is invoked:

1. Parse task descriptions from arguments
2. Load configuration from .parallel.yaml if present
3. Analyze tasks for dependencies and predict file modifications
4. Detect overlaps and form safe parallel groups
5. Check system resources (disk, memory, CPU)
6. If --dry-run, display analysis and exit
7. Create isolated git worktrees for each parallel task
8. Execute tasks concurrently using Claude Code agents
9. Merge completed worktrees back to main branch
10. Cleanup temporary worktrees unless --no-cleanup
11. Report results with timing and any failures

Requirements

• Git repository in clean state (no uncommitted changes)
• Sufficient disk space for worktrees (~500MB per worktree)
• Claude Code agent capabilities for task execution

Related Commands

• /manifold:m0-init - Initialize a constraint manifold
• /manifold:m-status - Show current manifold state

See Also

• Parallel Agents Documentation
• Constraint Manifold