【发布时间】：2017-09-20 12:38:47
【问题描述】：
我正在尝试运行 this script 来测试 Theano 对我的 GPU 的使用并得到以下错误：
ERROR (theano.gpuarray): Could not initialize pygpu, support disabled
Traceback (most recent call last):
File "/home/me/anaconda3/envs/py35/lib/python3.5/site-
packages/theano/gpuarray/__init__.py", line 164, in <module>
use(config.device)
File "/home/me/anaconda3/envs/py35/lib/python3.5/site-
packages/theano/gpuarray/__init__.py", line 151, in use
init_dev(device)
File "/home/me/anaconda3/envs/py35/lib/python3.5/site-
packages/theano/gpuarray/__init__.py", line 60, in init_dev
sched=config.gpuarray.sched)
File "pygpu/gpuarray.pyx", line 614, in pygpu.gpuarray.init
(pygpu/gpuarray.c:9419)
File "pygpu/gpuarray.pyx", line 566, in pygpu.gpuarray.pygpu_init
(pygpu/gpuarray.c:9110)
File "pygpu/gpuarray.pyx", line 1021, in
pygpu.gpuarray.GpuContext.__cinit__ (pygpu/gpuarray.c:13472)
pygpu.gpuarray.GpuArrayException: Error loading library: -1
我需要使用 nvidia-381 驱动程序，因为我的 GPU 是 1080 ti 并且与 nvidia-375 不兼容。我不确定这是否重要，但安装 nvcc 会覆盖 381，如果我在设置 nvcc 后重新安装 381 会导致一些错误，所以我不能使用 nvcc。
我可以毫无错误地导入pygpu，但如果我运行pygpu.test()，我会收到以下错误，并且我不知道如何在没有nvcc 的情况下指定DEVICE 变量。
======================================================================
ERROR: Failure: RuntimeError (No test device specified. Specify one using the DEVICE or GPUARRAY_TEST_DEVICE environment variables.)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/me/anaconda3/envs/py35/lib/python3.5/site-packages/nose/failure.py", line 39, in runTest
raise self.exc_val.with_traceback(self.tb)
File "/home/me/anaconda3/envs/py35/lib/python3.5/site-packages/nose/loader.py", line 418, in loadTestsFromName
addr.filename, addr.module)
File "/home/me/anaconda3/envs/py35/lib/python3.5/site-packages/nose/importer.py", line 47, in importFromPath
return self.importFromDir(dir_path, fqname)
File "/home/me/anaconda3/envs/py35/lib/python3.5/site-packages/nose/importer.py", line 94, in importFromDir
mod = load_module(part_fqname, fh, filename, desc)
File "/home/me/anaconda3/envs/py35/lib/python3.5/imp.py", line 234, in load_module
return load_source(name, filename, file)
File "/home/me/anaconda3/envs/py35/lib/python3.5/imp.py", line 172, in load_source
module = _load(spec)
File "<frozen importlib._bootstrap>", line 693, in _load
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 665, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/home/me/.local/lib/python3.5/site-packages/pygpu-0.6.2-py3.5-linux-x86_64.egg/pygpu/tests/test_tools.py", line 5, in <module>
from .support import (guard_devsup, rand, check_flags, check_meta, check_all,
File "/home/me/.local/lib/python3.5/site-packages/pygpu-0.6.2-py3.5-linux-x86_64.egg/pygpu/tests/support.py", line 32, in <module>
context = gpuarray.init(get_env_dev())
File "/home/me/.local/lib/python3.5/site-packages/pygpu-0.6.2-py3.5-linux-x86_64.egg/pygpu/tests/support.py", line 29, in get_env_dev
raise RuntimeError("No test device specified. Specify one using the DEVICE or GPUARRAY_TEST_DEVICE environment variables.")
RuntimeError: No test device specified. Specify one using the DEVICE or GPUARRAY_TEST_DEVICE environment variables.
----------------------------------------------------------------------
Ran 7 tests in 0.003s
FAILED (errors=7)
<nose.result.TextTestResult run=7 errors=7 failures=0>
【问题讨论】：
-
出现这种情况，可能是因为pygpu找不到合适的cuda版本。我相信 0.6.2 到 0.6.4 的 pygpu 版本适用于 Cuda 7.5，而 0.6.8 以上的版本适用于 Cuda 8.0