# EPYC Cluster Status Report - December 4, 2025

**Report Time:** 15:18 CET (office hours)  
**Issue:** Node 2 noise constraint during office hours (06:00-19:00)  
**Status:** ✅ RESOLVED - Time-restricted scheduling implemented

---

## Summary

Successfully implemented time-based worker scheduling to manage Worker2 (bd-host01) noise constraint. Worker2 will now only process parameter sweep chunks during off-hours (19:00-06:00), while Worker1 continues 24/7 operation.

---

## Current Cluster Status

### Sweep Progress
- **Total Chunks:** 1,693
- **Completed:** 64 (3.8%)
- **Running:** 1 (worker1: chunk 14)
- **Pending:** 1,628

### Worker Status (15:18 - Office Hours)
| Worker | Status | Current Load | Restriction | Notes |
|--------|--------|--------------|-------------|-------|
| Worker1 | ✅ Active | Processing chunk 14 | None | 24/7 operation |
| Worker2 | ⏸️ Idle | 0 processes | **19:00-06:00 only** | Waiting for off-hours |

---

## Changes Implemented

### 1. Time-Restricted Worker Configuration

Added to `v9_advanced_coordinator.py`:

```python
WORKERS = {
    'worker1': {
        'host': 'root@10.10.254.106',
        'workspace': '/home/comprehensive_sweep',
        # No restriction - runs 24/7
    },
    'worker2': {
        'host': 'root@10.20.254.100', 
        'workspace': '/home/backtest_dual/backtest',
        'ssh_hop': 'root@10.10.254.106',
        'time_restricted': True,      # Enable time control
        'allowed_start_hour': 19,     # 7 PM start
        'allowed_end_hour': 6,        # 6 AM end
    }
}
```

### 2. Time Validation Function

```python
def is_worker_allowed_to_run(worker_name: str) -> bool:
    """Check if worker is allowed to run based on time restrictions"""
    worker = WORKERS[worker_name]
    
    if not worker.get('time_restricted', False):
        return True
    
    current_hour = datetime.now().hour
    start_hour = worker['allowed_start_hour']
    end_hour = worker['allowed_end_hour']
    
    # Handle overnight range (19:00-06:00)
    if start_hour > end_hour:
        allowed = current_hour >= start_hour or current_hour < end_hour
    else:
        allowed = start_hour <= current_hour < end_hour
    
    return allowed
```

### 3. Coordinator Integration

Worker assignment loop now checks time restrictions:

```python
for worker_name in WORKERS.keys():
    # Check if worker is allowed to run
    if not is_worker_allowed_to_run(worker_name):
        if iteration % 10 == 0:  # Log every 10 iterations
            print(f"⏰ {worker_name} not allowed (office hours, noise restriction)")
        continue
    
    # ... proceed with work assignment ...
```

---

## Issues Resolved

### Stuck Chunk Problem
- **Chunk ID:** v9_advanced_chunk_0014
- **Issue:** Stuck in "running" state since Dec 2, 15:14 (46+ hours)
- **Cause:** Worker2 process failed but database wasn't updated
- **Resolution:** Reset to pending status
- **Current Status:** Reassigned to worker1, processing now

```sql
UPDATE v9_advanced_chunks 
SET status='pending', assigned_worker=NULL 
WHERE id='v9_advanced_chunk_0014';
```

---

## Performance Impact

### Operating Hours Comparison

**Before:**
- Worker1: 32 cores × 24h = 768 core-hours/day
- Worker2: 32 cores × 24h = 768 core-hours/day
- **Total:** 1,536 core-hours/day

**After:**
- Worker1: 32 cores × 24h = 768 core-hours/day
- Worker2: 32 cores × 11h = 352 core-hours/day (19:00-06:00)
- **Total:** 1,120 core-hours/day

**Impact:** -27% daily throughput (acceptable for quiet office hours)

### Estimated Completion Time
- **Original Estimate:** ~40 days (both workers 24/7)
- **With Restriction:** ~54 days (worker2 time-limited)
- **Delta:** +14 days
- **Trade-off:** Worth it for quiet work environment

---

## Verification Tests

### Time Restriction Logic Test (14:18 CET)
```bash
$ python3 -c "
from datetime import datetime
current_hour = datetime.now().hour
allowed = current_hour >= 19 or current_hour < 6
print(f'Current hour: {current_hour}')
print(f'Worker2 allowed: {allowed}')
"

Current hour: 14
Worker2 allowed: False  ✅ CORRECT
```

### Worker Assignment Check
```bash
$ sqlite3 exploration.db "
SELECT assigned_worker, COUNT(*) 
FROM v9_advanced_chunks 
WHERE status='running' 
GROUP BY assigned_worker;
"

worker1|1  ✅ Only worker1 active during office hours
```

---

## Expected Behavior

### During Office Hours (06:00 - 19:00)
- ✅ Worker1: Processing chunks continuously
- ⏸️ Worker2: Idle (no processes, no noise)
- 📋 Coordinator: Logs "⏰ worker2 not allowed (office hours)" every 10 iterations

### During Off-Hours (19:00 - 06:00)  
- ✅ Worker1: Processing chunks continuously
- ✅ Worker2: Processing chunks at full capacity
- 🚀 Both workers: Maximum throughput (64 cores combined)

### Transition Times
- **19:00 (7 PM):** Worker2 becomes active, starts processing pending chunks
- **06:00 (6 AM):** Worker2 finishes current chunk, becomes idle until 19:00

---

## Monitoring Commands

### Check Current Worker Status
```bash
# Worker1 processes
ssh root@10.10.254.106 "ps aux | grep v9_advanced_worker | wc -l"

# Worker2 processes (should be 0 during office hours)
ssh root@10.10.254.106 "ssh root@10.20.254.100 'ps aux | grep v9_advanced_worker | wc -l'"
```

### Check Sweep Progress
```bash
cd /home/icke/traderv4/cluster
sqlite3 exploration.db "
SELECT 
    status, 
    COUNT(*) as chunks,
    ROUND(100.0 * COUNT(*) / 1693, 1) as percent
FROM v9_advanced_chunks 
GROUP BY status 
ORDER BY status;
"
```

### Watch Coordinator Logs
```bash
# Real-time monitoring
tail -f /home/icke/traderv4/cluster/v9_advanced_coordinator.log

# Watch for time restriction messages
tail -f /home/icke/traderv4/cluster/v9_advanced_coordinator.log | grep "⏰"
```

### Check Worker Assignments
```bash
sqlite3 exploration.db "
SELECT 
    assigned_worker,
    status,
    COUNT(*) as chunks
FROM v9_advanced_chunks
WHERE assigned_worker IS NOT NULL
GROUP BY assigned_worker, status;
"
```

---

## Manual Overrides (If Needed)

### Temporarily Disable Time Restriction
If urgent sweep needed during office hours:

1. Edit `/home/icke/traderv4/cluster/v9_advanced_coordinator.py`
2. Comment out time restriction:
```python
'worker2': {
    # 'time_restricted': True,  # DISABLED FOR URGENT SWEEP
    'allowed_start_hour': 19,
    'allowed_end_hour': 6,
}
```
3. Restart coordinator: `pkill -f v9_advanced_coordinator && nohup python3 -u v9_advanced_coordinator.py >> v9_advanced_coordinator.log 2>&1 &`

### Adjust Operating Hours
To change worker2 hours (e.g., 20:00-05:00):

```python
'worker2': {
    'time_restricted': True,
    'allowed_start_hour': 20,  # 8 PM
    'allowed_end_hour': 5,     # 5 AM
}
```

Then restart coordinator.

---

## Git Commits

Changes committed and pushed to repository:

1. **f40fd66** - `feat: Add time-restricted scheduling for worker2`
   - Worker configuration with time restrictions
   - Coordinator loop integration

2. **f2f2992** - `fix: Add is_worker_allowed_to_run function definition`
   - Time validation function implementation

3. **0babd1e** - `docs: Add worker2 time restriction documentation`
   - Complete guide (WORKER2_TIME_RESTRICTION.md)

---

## Next Steps

### Tonight (19:00 - After Hours)
- Worker2 will automatically activate at 19:00
- Monitor first few chunks to ensure smooth operation
- Check logs: `tail -f v9_advanced_coordinator.log | grep worker2`

### Tomorrow Morning (06:00)
- Verify worker2 stopped automatically at 06:00
- Check overnight progress: How many chunks completed?
- Confirm office remains quiet during work hours

### Weekly Monitoring
- Track worker2 contribution rate (chunks/night)
- Compare worker1 24/7 vs worker2 11h/day productivity
- Adjust hours if needed based on office schedule

---

## Support

**Files Modified:**
- `/home/icke/traderv4/cluster/v9_advanced_coordinator.py` - Time restriction logic
- `/home/icke/traderv4/cluster/exploration.db` - Reset stuck chunk 14

**Documentation:**
- `/home/icke/traderv4/cluster/WORKER2_TIME_RESTRICTION.md` - Complete guide
- `/home/icke/traderv4/cluster/STATUS_REPORT_DEC4_2025.md` - This report

**Key Personnel:**
- Implementation: AI Agent (Dec 4, 2025)
- Requirement: User (noise constraint 06:00-19:00)

---

## Conclusion

✅ **Worker2 time restriction successfully implemented**  
✅ **Stuck chunk 14 resolved**  
✅ **Worker1 continues 24/7 processing**  
⏸️ **Worker2 waiting for 19:00 to start**  
📊 **Sweep progress: 3.8% (64/1693 chunks)**

System operating as expected. Worker2 will automatically activate tonight at 19:00 and process chunks until 06:00 tomorrow morning. Office hours remain quiet while maintaining sweep progress through worker1.