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努比。利纳格。inv(M)在一个系统上比另一个系统慢得多

linear-algebra numpy python

tgbrooks · 技术社区 · 4 年前

在我的笔记本电脑上,以下代码只需要3毫秒。在我的集群计算服务器上,大约需要10秒的时间才能使速度降低1000倍以上。为什么?我该怎么修呢?

import numpy
mat = numpy.random.random((150,150))
%timeit numpy.linalg.inv(mat)

我查过了 numpy.show_config() 并得到以下结果。在快速笔记本电脑上:

blas_mkl_info:
  NOT AVAILABLE
blis_info:
  NOT AVAILABLE
openblas_info:
    library_dirs = ['D:\\a\\1\\s\\numpy\\build\\openblas_info']
    libraries = ['openblas_info']
    language = f77
    define_macros = [('HAVE_CBLAS', None)]
blas_opt_info:
    library_dirs = ['D:\\a\\1\\s\\numpy\\build\\openblas_info']
    libraries = ['openblas_info']
    language = f77
    define_macros = [('HAVE_CBLAS', None)]
lapack_mkl_info:
  NOT AVAILABLE
openblas_lapack_info:
    library_dirs = ['D:\\a\\1\\s\\numpy\\build\\openblas_lapack_info']
    libraries = ['openblas_lapack_info']
    language = f77
    define_macros = [('HAVE_CBLAS', None)]
lapack_opt_info:
    library_dirs = ['D:\\a\\1\\s\\numpy\\build\\openblas_lapack_info']
    libraries = ['openblas_lapack_info']
    language = f77
    define_macros = [('HAVE_CBLAS', None)]

在慢速服务器上:

blas_mkl_info:
  NOT AVAILABLE
blis_info:
  NOT AVAILABLE
openblas_info:
    libraries = ['openblas', 'openblas']
    library_dirs = ['/usr/local/lib']
    language = c
    define_macros = [('HAVE_CBLAS', None)]
blas_opt_info:
    libraries = ['openblas', 'openblas']
    library_dirs = ['/usr/local/lib']
    language = c
    define_macros = [('HAVE_CBLAS', None)]
lapack_mkl_info:
  NOT AVAILABLE
openblas_lapack_info:
    libraries = ['openblas', 'openblas']
    library_dirs = ['/usr/local/lib']
    language = c
    define_macros = [('HAVE_CBLAS', None)]
lapack_opt_info:
    libraries = ['openblas', 'openblas']
    library_dirs = ['/usr/local/lib']
    language = c
    define_macros = [('HAVE_CBLAS', None)]

我真的不知道如何阅读这些,因为它没有记录在案,但除了 language 背景我尝试改用Fortran有序数组,但没有产生重大影响。

编辑:跑步 import numpy.distutils.system_info as sysinfo 和 sysinfo.get_info('openblas') 给出以下内容。在快速笔记本电脑上:

Could not locate executable g77
Could not locate executable f77
Could not locate executable ifort
Could not locate executable ifl
Could not locate executable f90
Could not locate executable DF
Could not locate executable efl
Could not locate executable gfortran
Could not locate executable f95
Could not locate executable g95
Could not locate executable efort
Could not locate executable efc
Could not locate executable flang
don't know how to compile Fortran code on platform 'nt'

在慢速服务器上:

{'libraries': ['openblas', 'openblas'],
 'library_dirs': ['/usr/lib64'],
 'language': 'c',
 'define_macros': [('HAVE_CBLAS', None)]}

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