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#!/usr/bin/env python3
"""
Monitor GPU stats and output as a formatted table.
"""
import subprocess
import time
import argparse
from datetime import datetime
def get_gpu_stats():
"""Query GPU stats using nvidia-smi."""
cmd = [
"nvidia-smi",
"--query-gpu=utilization.gpu,utilization.memory,memory.used,memory.total",
"--format=csv,noheader,nounits"
]
result = subprocess.run(cmd, capture_output=True, text=True)
if result.returncode != 0:
return None
values = result.stdout.strip().split(", ")
if len(values) != 4:
return None
return {
"gpu_util": int(values[0]),
"mem_util": int(values[1]),
"mem_used": int(values[2]),
"mem_total": int(values[3])
}
def print_header():
"""Print table header."""
print("+" + "-" * 25 + "+" + "-" * 12 + "+" + "-" * 12 + "+" + "-" * 18 + "+" + "-" * 18 + "+")
print(f"| {'Timestamp':<23} | {'GPU %':>10} | {'Mem %':>10} | {'Used (MiB)':>16} | {'Total (MiB)':>16} |")
print("+" + "-" * 25 + "+" + "-" * 12 + "+" + "-" * 12 + "+" + "-" * 18 + "+" + "-" * 18 + "+")
def print_row(stats):
"""Print a table row."""
timestamp = datetime.now().strftime("%Y/%m/%d %H:%M:%S.%f")[:-3]
print(f"| {timestamp:<23} | {stats['gpu_util']:>10} | {stats['mem_util']:>10} | {stats['mem_used']:>16} | {stats['mem_total']:>16} |")
def print_footer():
"""Print table footer."""
print("+" + "-" * 25 + "+" + "-" * 12 + "+" + "-" * 12 + "+" + "-" * 18 + "+" + "-" * 18 + "+")
def main():
parser = argparse.ArgumentParser(description="Monitor GPU stats as a formatted table")
parser.add_argument("-i", "--interval", type=float, default=2.0, help="Sampling interval in seconds (default: 2.0)")
parser.add_argument("-n", "--count", type=int, default=0, help="Number of samples (0 = infinite)")
args = parser.parse_args()
print_header()
count = 0
try:
while args.count == 0 or count < args.count:
stats = get_gpu_stats()
if stats:
print_row(stats)
else:
print("| ERROR: Could not get GPU stats" + " " * 47 + "|")
count += 1
if args.count == 0 or count < args.count:
time.sleep(args.interval)
except KeyboardInterrupt:
pass
print_footer()
if __name__ == "__main__":
main()
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