├── LICENSE ├── README.md ├── gpu_monitor.py └── servers.txt /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Remote GPU Monitor 2 | 3 | This Python script allows to check for free Nvidia GPUs in remote servers. 4 | Additional features include to list the type of GPUs and who's using them. 5 | The idea is to speed up the work of finding a free GPU in institutions that share multiple GPU servers. 6 | 7 | The script works by using your account to SSH into the servers and running `nvidia-smi`. 8 | 9 | ## Features 10 | 11 | - Show all free GPUs across servers 12 | - Show all current users of all GPUs (-l or --list) 13 | - Show all GPUs used by yourself (-m or --me) 14 | - Resolve usernames to real names (-f or --finger) 15 | 16 | ## Requirements 17 | 18 | - python3 19 | - SSH access to some Linux servers with Nvidia GPUs 20 | - If the server you connect to uses a different user name than your local name, you either have to specify your name on the servers using the `-s` option, or set up access as described in [setup for convenience](#setup-for-convenience). 21 | 22 | ## Usage 23 | 24 | For checking for free GPUs on some server(s), simply add their address(es) after the script name. 25 | You might need to enter your password. To avoid that, follow the steps in [setup for convenience](#setup-for-convenience). 26 | 27 | ``` 28 | > ./gpu_monitor.py myserver.com 29 | 30 | Server myserver.com: 31 | GPU 5, Tesla K80 32 | GPU 7, Tesla K80 33 | ``` 34 | 35 | If you have some set of servers that you regularily check, specify them in the file `servers.txt`, one address per line. 36 | Once you did that, running just `./gpu_monitor.py` checks all servers specified in this file by default. 37 | 38 | If you want to list all GPUs and who currently uses them, you can use the `-l` flag: 39 | ``` 40 | > ./gpu_monitor.py -l myserver.com 41 | 42 | Server myserver.com: 43 | GPU 0 (Tesla K80): Used by userA 44 | GPU 1 (Tesla K80): Used by userB 45 | GPU 2 (Tesla K80): Used by userA 46 | GPU 3 (Tesla K80): Used by userC 47 | GPU 4 (Tesla K80): Used by userC 48 | GPU 5 (Tesla K80): Free 49 | GPU 6 (Tesla K80): Used by userD 50 | GPU 7 (Tesla K80): Free 51 | ``` 52 | 53 | If you just want to see the GPUs used by yourself, you can use the `--me` flag. 54 | This requires that your user name is the same as remotely, or that you specify the name using the `-s` flag. 55 | ``` 56 | > ./gpu_monitor.py --me myserver.com 57 | Server myserver.com: 58 | GPU 3 (Tesla K80): Used by userC 59 | ``` 60 | 61 | Finally, if you also want to see the real names of users, you can use the `-f` flag. 62 | This uses Linux's `finger` command. 63 | ``` 64 | > ./gpu_monitor.py -f myserver.com 65 | 66 | Server myserver.com: 67 | GPU 0 (Tesla K80): Used by userA (Sue Parsons) 68 | GPU 1 (Tesla K80): Used by userB (Tim MacDonald) 69 | GPU 2 (Tesla K80): Used by userA (Sue Parsons) 70 | GPU 3 (Tesla K80): Used by userC (Neil Piper) 71 | GPU 4 (Tesla K80): Used by userC (Neil Piper) 72 | GPU 5 (Tesla K80): Free 73 | GPU 6 (Tesla K80): Used by userD (Brandon Ross) 74 | GPU 7 (Tesla K80): Free 75 | ``` 76 | 77 | ## Setup for Convenience 78 | 79 | ### Setting up an SSH key 80 | If you want to avoid having to enter your password all the time, you can setup an SSH key to login into your server. 81 | If you did this already, you are fine. 82 | 83 | 1. Open a terminal and run `cd .ssh` 84 | 2. Run `ssh-keygen` and follow the instructions. 85 | It might be a good idea to not use the default file but to specify a specific filename reflecting the servers you are connecting to. 86 | 3. Run `ssh-copy-id @`, where `@` is the server you want to connect. If you chose a different filename for your key, you need to pass the filename with the `-i` option. 87 | 4. Repeat step 3 for every server you want to connect to (not necessary if you have a shared home directory on all the servers). 88 | 5. Try to connect to the server using `ssh @`. 89 | The first time you connect, it should ask you for the password of the SSH key. 90 | If you are asked for the password multiple times, you might need to manually activate your SSH key using `ssh-add `. 91 | If it still does not work, follow with the next steps. 92 | 93 | ### If you have a different user name on your local machine 94 | 95 | This will show you how to avoid having to give your user name if you use the script (and SSH). 96 | 97 | 1. Go to the folder `.ssh` in your home and open the file `config`. 98 | If it is not there, create it. 99 | 2. Add something like this: 100 | ``` 101 | Host myserver.com 102 | User myusername 103 | ``` 104 | If you are connecting to multiple servers under the same domain, you can also use `Host *.mydomain.com` to indicate that you are using the same user name for all of them. 105 | 3. If you have an SSH key with a different name, you also add the line `IdentityFile path_to_ssh_key` after the `User` line. 106 | 107 | -------------------------------------------------------------------------------- /gpu_monitor.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | """Script to check the state of GPU servers 3 | 4 | This script is most useful in conjunction with an ssh-key, so a password does 5 | not have to be entered for each SSH connection. 6 | """ 7 | import argparse 8 | import logging 9 | import os 10 | import pwd 11 | import subprocess 12 | import sys 13 | import xml.etree.ElementTree as ET 14 | from collections import defaultdict 15 | from functools import partial 16 | from logging import debug, info, error 17 | 18 | # Default timeout in seconds after which SSH stops trying to connect 19 | DEFAULT_SSH_TIMEOUT = 3 20 | 21 | # Default timeout in seconds after which remote commands are interrupted 22 | DEFAULT_CMD_TIMEOUT = 10 23 | 24 | # Default server file 25 | DEFAULT_SERVER_FILE = 'servers.txt' 26 | SERVER_FILE_PATH = os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])), 27 | DEFAULT_SERVER_FILE) 28 | 29 | parser = argparse.ArgumentParser(description='Check state of GPU servers') 30 | parser.add_argument('-v', '--verbose', action='store_true', 31 | help='Be verbose') 32 | parser.add_argument('-l', '--list', action='store_true', help='Show used GPUs') 33 | parser.add_argument('-f', '--finger', action='store_true', 34 | help='Attempt to resolve user names to real names') 35 | parser.add_argument('-m', '--me', action='store_true', 36 | help='Show only GPUs used by current user') 37 | parser.add_argument('-u', '--user', help='Shows only GPUs used by a user') 38 | parser.add_argument('-s', '--ssh-user', default=None, 39 | help='Username to use to connect with SSH') 40 | parser.add_argument('--ssh-timeout', default=DEFAULT_SSH_TIMEOUT, 41 | help='Timeout in seconds after which SSH stops to connect') 42 | parser.add_argument('--cmd-timeout', default=DEFAULT_CMD_TIMEOUT, 43 | help=('Timeout in seconds after which nvidia-smi ' 44 | 'is interrupted')) 45 | parser.add_argument('--server-file', default=SERVER_FILE_PATH, 46 | help='File with addresses of servers to check') 47 | parser.add_argument('servers', nargs='*', default=[], 48 | help='Servers to probe') 49 | 50 | # SSH command 51 | SSH_CMD = ('ssh -o "ConnectTimeout={ssh_timeout}" {server} ' 52 | 'timeout {cmd_timeout}') 53 | 54 | # Command for running nvidia-smi locally 55 | NVIDIASMI_CMD = 'nvidia-smi -q -x' 56 | 57 | # Command for running nvidia-smi remotely 58 | REMOTE_NVIDIASMI_CMD = '{} {}'.format(SSH_CMD, NVIDIASMI_CMD) 59 | 60 | # Command for running ps locally 61 | PS_CMD = 'ps -o pid= -o ruser= -p {pids}' 62 | 63 | # Command for running ps remotely 64 | REMOTE_PS_CMD = '{} {}'.format(SSH_CMD, PS_CMD) 65 | 66 | # Command for getting real names remotely 67 | # See https://stackoverflow.com/a/38235661 68 | REAL_NAMES_CMD = """<<-"EOF" 69 | import pwd 70 | for user in [{users}]: 71 | try: 72 | print(pwd.getpwnam(user).pw_gecos) 73 | except KeyError: 74 | print('Unknown') 75 | EOF 76 | """ 77 | REMOTE_REAL_NAMES_CMD = '{} python - {}'.format(SSH_CMD, REAL_NAMES_CMD) 78 | 79 | 80 | def run_command(cmd): 81 | debug('Running command: "{}"'.format(cmd)) 82 | 83 | try: 84 | res = subprocess.check_output(cmd, shell=True) 85 | except subprocess.TimeoutExpired as e: 86 | debug(('Command timeouted with output "{}", ' 87 | 'and stderr "{}"'.format(e.output.decode('utf-8'), e.stderr))) 88 | return None 89 | except subprocess.CalledProcessError as e: 90 | debug(('Command failed with exit code {}, output "{}", ' 91 | 'and stderr "{}"'.format(e.returncode, 92 | e.output.decode('utf-8'), 93 | e.stderr))) 94 | return None 95 | 96 | return res 97 | 98 | 99 | def run_nvidiasmi_local(): 100 | res = run_command(NVIDIASMI_CMD) 101 | return ET.fromstring(res) if res is not None else None 102 | 103 | 104 | def run_nvidiasmi_remote(server, ssh_timeout, cmd_timeout): 105 | cmd = REMOTE_NVIDIASMI_CMD.format(server=server, 106 | ssh_timeout=ssh_timeout, 107 | cmd_timeout=cmd_timeout) 108 | res = run_command(cmd) 109 | return ET.fromstring(res) if res is not None else None 110 | 111 | 112 | def run_ps_local(pids): 113 | cmd = PS_CMD.format(pids=','.join(pids)) 114 | res = run_command(cmd) 115 | return res.decode('ascii') if res is not None else None 116 | 117 | 118 | def run_ps_remote(server, pids, ssh_timeout, cmd_timeout): 119 | cmd = REMOTE_PS_CMD.format(server=server, 120 | pids=','.join(pids), 121 | ssh_timeout=ssh_timeout, 122 | cmd_timeout=cmd_timeout) 123 | res = run_command(cmd) 124 | return res.decode('ascii') if res is not None else None 125 | 126 | 127 | def get_real_names_local(users): 128 | real_names_by_users = {} 129 | for user in users: 130 | try: 131 | real_names_by_users[user] = pwd.getpwnam(user).pw_gecos 132 | except KeyError: 133 | pass 134 | return defaultdict(lambda: 'Unknown', real_names_by_users) 135 | 136 | 137 | def get_real_names_remote(server, users, ssh_timeout, cmd_timeout): 138 | users_str = ','.join(('\'{}\''.format(user) for user in users)) 139 | cmd = REMOTE_REAL_NAMES_CMD.format(server=server, 140 | users=users_str, 141 | ssh_timeout=ssh_timeout, 142 | cmd_timeout=cmd_timeout) 143 | res = run_command(cmd) 144 | if res is not None: 145 | res = res.decode('utf-8') 146 | real_names_by_users = {user: s.strip() 147 | for user, s in zip(users, res.split('\n'))} 148 | return defaultdict(lambda: 'Unknown', real_names_by_users) 149 | else: 150 | return None 151 | 152 | 153 | def get_users_by_pid(ps_output): 154 | users_by_pid = {} 155 | for line in ps_output.strip().split('\n'): 156 | pid, user = line.split() 157 | users_by_pid[pid] = user 158 | 159 | return users_by_pid 160 | 161 | 162 | def get_gpu_infos(nvidiasmi_output): 163 | gpus = nvidiasmi_output.findall('gpu') 164 | 165 | gpu_infos = [] 166 | for idx, gpu in enumerate(gpus): 167 | model = gpu.find('product_name').text 168 | processes = gpu.findall('processes')[0] 169 | pids = [process.find('pid').text for process in processes] 170 | gpu_infos.append({'idx': idx, 'model': model, 'pids': pids}) 171 | 172 | return gpu_infos 173 | 174 | 175 | def print_free_gpus(server, gpu_infos): 176 | free_gpus = [info for info in gpu_infos if len(info['pids']) == 0] 177 | 178 | if len(free_gpus) == 0: 179 | info('Server {}: No free GPUs :('.format(server)) 180 | else: 181 | info('Server {}:'.format(server)) 182 | for gpu_info in free_gpus: 183 | info('\tGPU {}, {}'.format(gpu_info['idx'], gpu_info['model'])) 184 | 185 | 186 | def print_gpu_infos(server, gpu_infos, run_ps, run_get_real_names, 187 | filter_by_user=None, 188 | translate_to_real_names=False): 189 | pids = [pid for gpu_info in gpu_infos for pid in gpu_info['pids']] 190 | if len(pids) > 0: 191 | ps = run_ps(pids=pids) 192 | if ps is None: 193 | error('Could not reach {} or error running ps'.format(server)) 194 | return 195 | 196 | users_by_pid = get_users_by_pid(ps) 197 | else: 198 | users_by_pid = {} 199 | 200 | if translate_to_real_names: 201 | all_users = set((users_by_pid[pid] for gpu_info in gpu_infos 202 | for pid in gpu_info['pids'])) 203 | real_names_by_users = run_get_real_names(users=all_users) 204 | 205 | info('Server {}:'.format(server)) 206 | for gpu_info in gpu_infos: 207 | users = set((users_by_pid[pid] for pid in gpu_info['pids'])) 208 | if filter_by_user is not None and filter_by_user not in users: 209 | continue 210 | 211 | if len(gpu_info['pids']) == 0: 212 | status = 'Free' 213 | else: 214 | if translate_to_real_names: 215 | users = ['{} ({})'.format(user, real_names_by_users[user]) 216 | for user in users] 217 | 218 | status = 'Used by {}'.format(', '.join(users)) 219 | 220 | info('\tGPU {} ({}): {}'.format(gpu_info['idx'], 221 | gpu_info['model'], 222 | status)) 223 | 224 | 225 | def main(argv): 226 | args = parser.parse_args(argv) 227 | 228 | logging.basicConfig(format='%(message)s', 229 | level=logging.DEBUG if args.verbose else logging.INFO) 230 | 231 | if len(args.servers) == 0: 232 | try: 233 | debug('Using server file {}'.format(args.server_file)) 234 | with open(args.server_file, 'r') as f: 235 | servers = (s.strip() for s in f.readlines()) 236 | args.servers = [s for s in servers if s != ''] 237 | except OSError as e: 238 | error('Could not open server file {}'.format(args.server_file)) 239 | return 240 | 241 | if len(args.servers) == 0: 242 | error(('No GPU servers to connect to specified.\nPut addresses in ' 243 | 'the server file or specify them manually as an argument')) 244 | return 245 | 246 | if args.ssh_user is not None: 247 | args.servers = ['{}@{}'.format(args.ssh_user, server) 248 | for server in args.servers] 249 | if args.me: 250 | if args.ssh_user is not None: 251 | args.user = args.ssh_user 252 | else: 253 | args.user = pwd.getpwuid(os.getuid()).pw_name 254 | if args.user or args.finger: 255 | args.list = True 256 | 257 | for server in args.servers: 258 | if server == '.' or server == 'localhost' or server == '127.0.0.1': 259 | run_nvidiasmi = run_nvidiasmi_local 260 | run_ps = run_ps_local 261 | run_get_real_names = get_real_names_local 262 | else: 263 | run_nvidiasmi = partial(run_nvidiasmi_remote, 264 | server=server, 265 | ssh_timeout=args.ssh_timeout, 266 | cmd_timeout=args.cmd_timeout) 267 | run_ps = partial(run_ps_remote, 268 | server=server, 269 | ssh_timeout=args.ssh_timeout, 270 | cmd_timeout=args.cmd_timeout) 271 | run_get_real_names = partial(get_real_names_remote, 272 | server=server, 273 | ssh_timeout=args.ssh_timeout, 274 | cmd_timeout=args.cmd_timeout) 275 | 276 | nvidiasmi = run_nvidiasmi() 277 | if nvidiasmi is None: 278 | error(('Could not reach {} or ' 279 | 'error running nvidia-smi').format(server)) 280 | continue 281 | 282 | gpu_infos = get_gpu_infos(nvidiasmi) 283 | 284 | if args.list: 285 | print_gpu_infos(server, gpu_infos, run_ps, run_get_real_names, 286 | filter_by_user=args.user, 287 | translate_to_real_names=args.finger) 288 | else: 289 | print_free_gpus(server, gpu_infos) 290 | 291 | 292 | if __name__ == '__main__': 293 | main(sys.argv[1:]) 294 | -------------------------------------------------------------------------------- /servers.txt: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mseitzer/gpu-monitor/84ef56814d08694b694043d6548870c7d5161705/servers.txt --------------------------------------------------------------------------------