我有一个使用numpy
的脚本,其中约50%的运行时间花费在以下代码中:
s = numpy.dot(v1, v1)
其中
v1 = v[1:]
v
是一个包含4000个元素的连续内存的1D ndarray
,其数据类型为float64
(v.strides
为(8,)
)。
有什么建议可以加速这个过程吗?
编辑 这是在英特尔硬件上。这是我numpy.show_config()
的输出:
atlas_threads_info:
libraries = ['lapack', 'ptf77blas', 'ptcblas', 'atlas']
library_dirs = ['/usr/local/atlas-3.9.16/lib']
language = f77
include_dirs = ['/usr/local/atlas-3.9.16/include']
blas_opt_info:
libraries = ['ptf77blas', 'ptcblas', 'atlas']
library_dirs = ['/usr/local/atlas-3.9.16/lib']
define_macros = [('ATLAS_INFO', '"\\"3.9.16\\""')]
language = c
include_dirs = ['/usr/local/atlas-3.9.16/include']
atlas_blas_threads_info:
libraries = ['ptf77blas', 'ptcblas', 'atlas']
library_dirs = ['/usr/local/atlas-3.9.16/lib']
language = c
include_dirs = ['/usr/local/atlas-3.9.16/include']
lapack_opt_info:
libraries = ['lapack', 'ptf77blas', 'ptcblas', 'atlas']
library_dirs = ['/usr/local/atlas-3.9.16/lib']
define_macros = [('ATLAS_INFO', '"\\"3.9.16\\""')]
language = f77
include_dirs = ['/usr/local/atlas-3.9.16/include']
lapack_mkl_info:
NOT AVAILABLE
blas_mkl_info:
NOT AVAILABLE
mkl_info:
NOT AVAILABLE