1 | # |
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2 | # This file is part of Glances. |
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3 | # |
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4 | # SPDX-FileCopyrightText: 2024 Nicolas Hennion <[email protected]> |
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5 | # |
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6 | # SPDX-License-Identifier: LGPL-3.0-only |
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7 | # |
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8 | |||
9 | """NVidia Extension unit for Glances' GPU plugin.""" |
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10 | |||
11 | from glances.globals import nativestr |
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12 | from glances.logger import logger |
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13 | |||
14 | try: |
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15 | import pynvml |
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16 | except Exception as e: |
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17 | nvidia_gpu_enable = False |
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18 | # Display debug message if import KeyError |
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19 | logger.warning(f"Missing Python Lib ({e}), Nvidia GPU plugin is disabled") |
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20 | else: |
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21 | nvidia_gpu_enable = True |
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22 | |||
23 | |||
24 | class NvidiaGPU: |
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25 | """GPU card class.""" |
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26 | |||
27 | def __init__(self): |
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28 | """Init Nvidia GPU card class.""" |
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29 | if not nvidia_gpu_enable: |
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30 | self.device_handles = [] |
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31 | else: |
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32 | try: |
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33 | pynvml.nvmlInit() |
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34 | self.device_handles = get_device_list() |
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35 | except Exception: |
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36 | logger.debug("pynvml could not be initialized.") |
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37 | self.device_handles = [] |
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38 | |||
39 | def exit(self): |
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40 | """Close NVidia GPU class.""" |
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41 | if self.device_handles != []: |
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42 | try: |
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43 | pynvml.nvmlShutdown() |
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44 | except Exception as e: |
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45 | logger.debug(f"pynvml failed to shutdown correctly ({e})") |
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46 | |||
47 | View Code Duplication | def get_device_stats(self): |
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48 | """Get Nvidia GPU stats.""" |
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49 | stats = [] |
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50 | |||
51 | for index, device_handle in enumerate(self.device_handles): |
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52 | device_stats = {} |
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53 | # Dictionary key is the GPU_ID |
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54 | device_stats['key'] = 'gpu_id' |
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55 | # GPU id (for multiple GPU, start at 0) |
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56 | device_stats['gpu_id'] = f'nvidia{index}' |
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57 | # GPU name |
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58 | device_stats['name'] = get_device_name(device_handle) |
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59 | # Memory consumption in % (not available on all GPU) |
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60 | device_stats['mem'] = get_mem(device_handle) |
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61 | # Processor consumption in % |
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62 | device_stats['proc'] = get_proc(device_handle) |
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63 | # Processor temperature in °C |
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64 | device_stats['temperature'] = get_temperature(device_handle) |
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65 | # Fan speed in % |
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66 | device_stats['fan_speed'] = get_fan_speed(device_handle) |
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67 | stats.append(device_stats) |
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68 | |||
69 | return stats |
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70 | |||
71 | |||
72 | def get_device_list(): |
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73 | """Get a list of NVML device handles, one per device. |
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74 | |||
75 | Can throw NVMLError. |
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76 | """ |
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77 | return [pynvml.nvmlDeviceGetHandleByIndex(i) for i in range(pynvml.nvmlDeviceGetCount())] |
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78 | |||
79 | |||
80 | def get_device_name(device_handle): |
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81 | """Get GPU device name.""" |
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82 | try: |
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83 | return nativestr(pynvml.nvmlDeviceGetName(device_handle)) |
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84 | except pynvml.NVMLError: |
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85 | return "NVIDIA" |
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86 | |||
87 | |||
88 | def get_mem(device_handle): |
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89 | """Get GPU device memory consumption in percent.""" |
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90 | try: |
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91 | memory_info = pynvml.nvmlDeviceGetMemoryInfo(device_handle) |
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92 | return memory_info.used * 100.0 / memory_info.total |
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93 | except pynvml.NVMLError: |
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94 | return None |
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95 | |||
96 | |||
97 | def get_proc(device_handle): |
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98 | """Get GPU device CPU consumption in percent.""" |
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99 | try: |
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100 | return pynvml.nvmlDeviceGetUtilizationRates(device_handle).gpu |
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101 | except pynvml.NVMLError: |
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102 | return None |
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103 | |||
104 | |||
105 | def get_temperature(device_handle): |
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106 | """Get GPU device CPU temperature in Celsius.""" |
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107 | try: |
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108 | return pynvml.nvmlDeviceGetTemperature(device_handle, pynvml.NVML_TEMPERATURE_GPU) |
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109 | except pynvml.NVMLError: |
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110 | return None |
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111 | |||
112 | |||
113 | def get_fan_speed(device_handle): |
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114 | """Get GPU device fan speed in percent.""" |
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115 | try: |
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116 | return pynvml.nvmlDeviceGetFanSpeed(device_handle) |
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117 | except pynvml.NVMLError: |
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118 | return None |
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119 |