Stata MCP Server

# Stata-MCP `run_selection` Parallel Test Report **Date:** 2025-12-22 **Test:** Parallel execution of `stata_run_selection` across 8 sessions --- ## Test Design Each session executed two sequential Stata selections: 1. **Initialize**: Set a local variable and display initialization message 2. **Compute**: Calculate `session_id * 100` and display current time --- ## Results | Session | Init Output | Computation | Result | Time | |---------|-------------|-------------|--------|------| | session_1 | "Session 1 initialized" | 1 × 100 | 100 | 11:41:02 | | session_2 | "Session 2 initialized" | 2 × 100 | 200 | 11:41:03 | | session_3 | "Session 3 initialized" | 3 × 100 | 300 | 11:41:01 | | session_4 | "Session 4 initialized" | 4 × 100 | 400 | 11:41:02 | | session_5 | "Session 5 initialized" | 5 × 100 | 500 | 11:41:05 | | session_6 | "Session 6 initialized" | 6 × 100 | 600 | 11:41:04 | | session_7 | "Session 7 initialized" | 7 × 100 | 700 | 11:41:01 | | session_8 | "Session 8 initialized" | 8 × 100 | 800 | 11:41:03 | --- ## Analysis ### Parallel Execution ✅ All 8 sessions executed within a **4-second window** (11:41:01 - 11:41:05). ``` 11:41:01 │ session_3, session_7 11:41:02 │ session_1, session_4 11:41:03 │ session_2, session_8 11:41:04 │ session_6 11:41:05 │ session_5 ``` This confirms **true parallel execution** - sessions are running simultaneously. ### Computation Accuracy ✅ All computations produced correct results: - 1 × 100 = 100 ✓ - 2 × 100 = 200 ✓ - 3 × 100 = 300 ✓ - 4 × 100 = 400 ✓ - 5 × 100 = 500 ✓ - 6 × 100 = 600 ✓ - 7 × 100 = 700 ✓ - 8 × 100 = 800 ✓ ### Session Isolation ✅ Each session: - Maintained its own state - Executed commands independently - Produced session-specific output - No cross-session interference ### No Errors ✅ - No log file locking errors - No session conflicts - All 16 Stata selections (2 per session × 8 sessions) executed successfully --- ## Conclusion The `stata_run_selection` tool successfully supports: - ✅ **Parallel execution** across multiple sessions - ✅ **Session isolation** with independent state - ✅ **Accurate computation** results - ✅ **Error-free operation** with no file locking issues The multi-session parallel execution feature is working correctly! --- ## Session State Persistence Test ### Test Design Test if sessions maintain data between consecutive API calls. ### Results **Session 1:** | Call | Operation | Result | |------|-----------|--------| | 1st | `set obs 100`, `gen x = runiform()` | Created 100 obs, x mean = 0.5447 | | 2nd | `gen y = x * 2` | ✅ SUCCESS - y mean = 1.089 (2× x) | **Session 2:** | Call | Operation | Result | |------|-----------|--------| | 1st | `set obs 100`, `gen x = runiform()` | Created 100 obs, x mean = 0.4663 | | 2nd | `gen y = x * 2` | ✅ SUCCESS - y mean = 0.9326 (2× x) | **Conclusion:** ✅ Sessions maintain state between API calls. Data persists correctly. --- ## Cross-Session Isolation Test ### Test Design Verify that sessions cannot see each other's data. ### Results | Session | Operation | Observations | |---------|-----------|--------------| | session_A | `set obs 50`, `gen test_var = 999` | 50 | | session_B | `display _N` | **0** (isolated!) | | session_A | `display _N` (verify) | 50 (unchanged) | **Conclusion:** ✅ Sessions are completely isolated. Session B cannot access Session A's data. --- ## Summary | Feature | Status | |---------|--------| | Parallel Execution | ✅ 8 sessions run simultaneously | | Computation Accuracy | ✅ All results correct | | State Persistence | ✅ Data persists between calls | | Session Isolation | ✅ Sessions cannot see each other's data | | Error-Free Operation | ✅ No log file or locking errors | **All session management features are working correctly!**