我创建了一个新的conda环境
user@machine:~/project$ conda create -n test-env -c numba python=3.5.2 llvmdev=3.8
Fetching package metadata ...........
Solving package specifications: .
Package plan for installation in environment /home/user/anaconda2/envs/test-env:
The following NEW packages will be INSTALLED:
llvmdev: 3.8.1-7 numba
openssl: 1.0.2k-0
pip: 9.0.1-py35_1
python: 3.5.2-0
readline: 6.2-2
setuptools: 27.2.0-py35_0
sqlite: 3.13.0-0
system: 5.8-2 numba
tk: 8.5.18-0
wheel: 0.29.0-py35_0
xz: 5.2.2-1
zlib: 1.2.8-3
Proceed ([y]/n)? y
#
# To activate this environment, use:
# > source activate test-env
#
# To deactivate this environment, use:
# > source deactivate test-env
#
然后激活它并尝试使用专门的pip(而不是conda)来安装llvmlite和numba,这似乎是成功的 . (注意:我也尝试了 --no-cache-dir
并且它没有改变任何东西 . )
user@machine:~/project$ source activate test-env
(test-env) user@machine:~/project$ pip install llvmlite==0.15 numba==0.30.1
Collecting llvmlite==0.15
Collecting numba==0.30.1
Collecting numpy (from numba==0.30.1)
Using cached numpy-1.12.0-cp35-cp35m-manylinux1_x86_64.whl
Installing collected packages: llvmlite, numpy, numba
Successfully installed llvmlite-0.15.0 numba-0.30.1 numpy-1.12.0
但是库没有正确安装,
(test-env) user@machine:~/project$ python
Python 3.5.2 |Continuum Analytics, Inc.| (default, Jul 2 2016, 17:53:06)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numba
Traceback (most recent call last):
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/ffi.py", line 42, in <module>
lib = ctypes.CDLL(os.path.join(_lib_dir, _lib_name))
File "/home/user/anaconda2/envs/test-env/lib/python3.5/ctypes/__init__.py", line 347, in __init__
self._handle = _dlopen(self._name, mode)
OSError: /home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/libllvmlite.so: undefined symbol: _ZNKSt14error_category23default_error_conditionEi
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/numba/__init__.py", line 9, in <module>
from . import config, errors, runtests, types
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/numba/config.py", line 11, in <module>
import llvmlite.binding as ll
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/__init__.py", line 6, in <module>
from .dylib import *
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/dylib.py", line 4, in <module>
from . import ffi
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/ffi.py", line 47, in <module>
lib = ctypes.CDLL(_lib_name)
File "/home/user/anaconda2/envs/test-env/lib/python3.5/ctypes/__init__.py", line 347, in __init__
self._handle = _dlopen(self._name, mode)
OSError: libllvmlite.so: cannot open shared object file: No such file or directory
为什么来自numba通道的 llvmdev
的conda安装失败"just work" .
在我的用例中,我来到一个具有pip样式的requirements.txt文件的项目,我需要从该文件创建conda环境 . 一些项目开发人员将使用venv pip,一些将使用conda,并且其中包含的某些软件包在任何anaconda渠道中都找不到,因此必须安装pip . 除了requirements.txt之外,我们不想维护单独的envrionment.yaml,因此从conda环境中的requirements.txt安装是我的约束的一部分 .
一切似乎没问题,除了numba / llvmlite的pip安装,它需要llvm 3.8的系统依赖性 . 我想将其作为conda环境的一部分来满足 .
我怎样才能从conda环境中确保只存在用于安装numba和llvmlite的正确llvmdev?
2 回答
在理想情况下,安装llvmlite后应该存在所需的共享库 .
如果test-env中没有此文件,则在安装llvmlite时出现问题 .
另外,反过来考虑这种方法 . 您不需要将要求文件与conda环境文件分开 . 您可以在conda环境文件本身中拥有两个依赖项:
在第二个注释中,您可以安装“numba”conda通道本身所需的预构建二进制文件 . 附:
Installing llvmdev :通过在您的 Channels 中添加conda-forge,可以实现从conda-forge Channels 安装llvmdev:
启用
conda-forge
Channels 后,可以安装llvmdev
:可以列出您平台上可用的llvmdev的所有版本: