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"""Get OS specific nvml wrapper. On OSX we use pynvx as drop in replacement for pynvml"""
import platform
from ..script import *
#
# BEGIN: Temporary workaround for nvml.dll load issue in Win10
#
# Remove once nicolargo/nvidia-ml-py3#2 and a new version of the module is released
# (OR fbcotter/py3nvml#10 but will require extra work to rename things)
# Refer https://forums.fast.ai/t/nvml-dll-loading-issue-in-nvidia-ml-py3-7-352-0-py-0/39684/8
import threading
from ctypes import *
nvmlLib = None
libLoadLock = threading.Lock()
def _LoadNvmlLibrary():
'''
Load the library if it isn't loaded already
'''
global nvmlLib
if (nvmlLib == None):
libLoadLock.acquire()
try:
if (nvmlLib == None):
try:
if (sys.platform[:3] == "win"):
searchPaths = [
os.path.join(os.getenv("ProgramFiles", r"C:\Program Files"), r"NVIDIA Corporation\NVSMI\nvml.dll"),
os.path.join(os.getenv("WinDir", r"C:\Windows"), r"System32\nvml.dll"),
]
nvmlPath = next((x for x in searchPaths if os.path.isfile(x)), None)
if (nvmlPath == None):
nvmlLib = None
else:
nvmlLib = CDLL(nvmlPath)
else:
nvmlLib = None
except OSError as ose:
nvmlLib = None
finally:
libLoadLock.release()
#
# END: Temporary workaround for nvml.dll load issue in Win10
#
def load_pynvml_env():
import pynvml # nvidia-ml-py3
#
# BEGIN: Temporary workaround for nvml.dll load issue in Win10 (continued)
_LoadNvmlLibrary()
pynvml.nvmlLib = nvmlLib
#
# END: Temporary workaround for nvml.dll load issue in Win10
#
if platform.system() == "Darwin":
try:
from pynvx import pynvml
except:
print("please install pynvx on OSX: pip install pynvx")
sys.exit(1)
pynvml.nvmlInit()
return pynvml
pynvml.nvmlInit()
return pynvml
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