问题描述
我同时安装了BLAS和OpenBLAS:
I have both BLAS and OpenBLAS installed:
$ dpkg -l \*blas\* | grep ^i
ii libblas-dev 1.2.20110419-7 amd64 Basic Linear Algebra Subroutines 3, static library
ii libblas3 1.2.20110419-7 amd64 Basic Linear Algebra Reference implementations, shared library
ii libopenblas-base 0.2.8-6ubuntu1 amd64 Optimized BLAS (linear algebra) library based on GotoBLAS2
ii libopenblas-dev 0.2.8-6ubuntu1 amd64 Optimized BLAS (linear algebra) library based on GotoBLAS2
但是,NumPy仍然说OpenBLAS不可用:
However, NumPy still says that OpenBLAS is not available:
>> np.__config__.show()
blas_info:
libraries = ['blas']
library_dirs = ['/usr/lib']
language = f77
lapack_info:
libraries = ['lapack']
library_dirs = ['/usr/lib']
language = f77
atlas_threads_info:
NOT AVAILABLE
blas_opt_info:
libraries = ['blas']
library_dirs = ['/usr/lib']
language = f77
define_macros = [('NO_ATLAS_INFO', 1)]
atlas_blas_threads_info:
NOT AVAILABLE
openblas_info:
NOT AVAILABLE
lapack_opt_info:
libraries = ['lapack', 'blas']
library_dirs = ['/usr/lib']
language = f77
define_macros = [('NO_ATLAS_INFO', 1)]
atlas_info:
NOT AVAILABLE
lapack_mkl_info:
NOT AVAILABLE
blas_mkl_info:
NOT AVAILABLE
atlas_blas_info:
NOT AVAILABLE
mkl_info:
NOT AVAILABLE
我该如何解决?
我不认为我可以卸载libblas3
,因为很多东西都依赖于它,包括libblas-dev
,甚至连libopenblas-dev
都依赖于它.
I don't think I can just uninstall libblas3
, beacuse many things depend on it, including libblas-dev
, on which even libopenblas-dev
depends.
我尝试了
$ sudo apt-get install --reinstall python-numpy
但这没有帮助.
这尤其令人惊讶,因为numpy
中的所有*.so
文件都链接到OpenBLAS:
This is especially surprising, because all of the *.so
files in numpy
link to OpenBLAS:
$ ldd `find /usr/lib/python2.7/dist-packages/numpy -name \*\.so` | grep libblas
libblas.so.3 => /usr/lib/libblas.so.3 (0x00007fba2ac96000)
libblas.so.3 => /usr/lib/libblas.so.3 (0x00007f04f7f54000)
libblas.so.3 => /usr/lib/libblas.so.3 (0x00007f9a941a9000)
$ ls -l /usr/lib/libblas.so.3 /etc/alternatives/libblas.so.3
lrwxrwxrwx 1 root root 35 Oct 22 2014 /etc/alternatives/libblas.so.3 -> /usr/lib/openblas-base/libblas.so.3
lrwxrwxrwx 1 root root 30 Oct 6 2014 /usr/lib/libblas.so.3 -> /etc/alternatives/libblas.so.3
推荐答案
基于ldd
输出,NumPy必须已经与OpenBLAS链接.它只是不知道,因为它是通过/usr/lib/libblas*
链接的,它被视为通用BLAS.
Based on the ldd
output, NumPy must already be linked with OpenBLAS. It just doesn't know it, because it's linked via /usr/lib/libblas*
, which it sees as generic BLAS.
这篇关于如何在Ubuntu中使NumPy使用OpenBlas?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!