| """Quick test: allocate more RAM than available and verify swap catches it.""" | |
| import numpy as np | |
| import psutil | |
| def main(): | |
| mem = psutil.virtual_memory() | |
| swap = psutil.swap_memory() | |
| print(f"RAM: {mem.total / 1e9:.0f}GB total, {mem.available / 1e9:.0f}GB available") | |
| print(f"Swap: {swap.total / 1e9:.0f}GB total, {swap.used / 1e9:.0f}GB used") | |
| print() | |
| target_gb = 300 | |
| chunk_gb = 10 | |
| chunks = [] | |
| print(f"Allocating {target_gb}GB in {chunk_gb}GB chunks...") | |
| for i in range(target_gb // chunk_gb): | |
| chunks.append(np.ones(int(chunk_gb * 1e9 / 8), dtype=np.float64)) | |
| allocated = (i + 1) * chunk_gb | |
| swap_now = psutil.swap_memory() | |
| mem_now = psutil.virtual_memory() | |
| print(f" {allocated:>4}GB allocated | RAM used: {mem_now.used / 1e9:.1f}GB | swap used: {swap_now.used / 1e9:.1f}GB") | |
| print() | |
| print("SUCCESS: allocated 300GB without OOM. Swap is working.") | |
| del chunks | |
| if __name__ == "__main__": | |
| main() | |