forked from numpy/numpy
-
Notifications
You must be signed in to change notification settings - Fork 0
/
openblas_support.py
229 lines (216 loc) · 8.12 KB
/
openblas_support.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
from __future__ import division, absolute_import, print_function
import os
import sys
import textwrap
import platform
try:
from urllib.request import urlopen
from urllib.error import HTTPError
except:
#Python2
from urllib2 import urlopen, HTTPError
from tempfile import mkstemp, gettempdir
import zipfile
import tarfile
OPENBLAS_V = 'v0.3.7'
OPENBLAS_LONG = 'v0.3.7'
BASE_LOC = ''
RACKSPACE = 'https://3f23b170c54c2533c070-1c8a9b3114517dc5fe17b7c3f8c63a43.ssl.cf2.rackcdn.com'
ARCHITECTURES = ['', 'windows', 'darwin', 'arm', 'x86', 'ppc64']
IS_32BIT = sys.maxsize < 2**32
def get_arch():
if platform.system() == 'Windows':
ret = 'windows'
elif platform.system() == 'Darwin':
ret = 'darwin'
# Python3 returns a named tuple, but Python2 does not, so we are stuck
elif 'arm' in os.uname()[-1]:
ret = 'arm';
elif 'aarch64' in os.uname()[-1]:
ret = 'arm';
elif 'x86' in os.uname()[-1]:
ret = 'x86'
elif 'ppc64' in os.uname()[-1]:
ret = 'ppc64'
else:
ret = ''
assert ret in ARCHITECTURES
return ret
def download_openblas(target, arch):
filename = ''
if arch == 'arm':
# ARMv8 OpenBLAS built using script available here:
# https://github.com/tylerjereddy/openblas-static-gcc/tree/master/ARMv8
# build done on GCC compile farm machine named gcc115
# tarball uploaded manually to an unshared Dropbox location
filename = ('https://www.dropbox.com/s/vdeckao4omss187/'
'openblas-{}-armv8.tar.gz?dl=1'.format(OPENBLAS_V))
typ = 'tar.gz'
elif arch == 'ppc64':
# build script for POWER8 OpenBLAS available here:
# https://github.com/tylerjereddy/openblas-static-gcc/blob/master/power8
# built on GCC compile farm machine named gcc112
# manually uploaded tarball to an unshared Dropbox location
filename = ('https://www.dropbox.com/s/yt0d2j86x1j8nh1/'
'openblas-{}-ppc64le-power8.tar.gz?dl=1'.format(OPENBLAS_V))
typ = 'tar.gz'
elif arch == 'darwin':
filename = '{0}/openblas-{1}-macosx_10_9_x86_64-gf_1becaaa.tar.gz'.format(
RACKSPACE, OPENBLAS_LONG)
typ = 'tar.gz'
elif arch == 'windows':
if IS_32BIT:
suffix = 'win32-gcc_7_1_0.zip'
else:
suffix = 'win_amd64-gcc_7_1_0.zip'
filename = '{0}/openblas-{1}-{2}'.format(RACKSPACE, OPENBLAS_LONG, suffix)
typ = 'zip'
elif arch == 'x86':
if IS_32BIT:
suffix = 'manylinux1_i686.tar.gz'
else:
suffix = 'manylinux1_x86_64.tar.gz'
filename = '{0}/openblas-{1}-{2}'.format(RACKSPACE, OPENBLAS_LONG, suffix)
typ = 'tar.gz'
if not filename:
return None
try:
with open(target, 'wb') as fid:
fid.write(urlopen(filename).read())
except HTTPError:
print('Could not download "%s"' % filename)
return None
return typ
def setup_openblas(arch=get_arch()):
'''
Download and setup an openblas library for building. If successful,
the configuration script will find it automatically.
Returns
-------
msg : str
path to extracted files on success, otherwise indicates what went wrong
To determine success, do ``os.path.exists(msg)``
'''
_, tmp = mkstemp()
if not arch:
raise ValueError('unknown architecture')
typ = download_openblas(tmp, arch)
if not typ:
return ''
if arch == 'windows':
if not typ == 'zip':
return 'expecting to download zipfile on windows, not %s' % str(typ)
return unpack_windows_zip(tmp)
else:
if not typ == 'tar.gz':
return 'expecting to download tar.gz, not %s' % str(typ)
return unpack_targz(tmp)
def unpack_windows_zip(fname):
import sysconfig
with zipfile.ZipFile(fname, 'r') as zf:
# Get the openblas.a file, but not openblas.dll.a nor openblas.dev.a
lib = [x for x in zf.namelist() if OPENBLAS_LONG in x and
x.endswith('a') and not x.endswith('dll.a') and
not x.endswith('dev.a')]
if not lib:
return 'could not find libopenblas_%s*.a ' \
'in downloaded zipfile' % OPENBLAS_LONG
target = os.path.join(gettempdir(), 'openblas.a')
with open(target, 'wb') as fid:
fid.write(zf.read(lib[0]))
return target
def unpack_targz(fname):
target = os.path.join(gettempdir(), 'openblas')
if not os.path.exists(target):
os.mkdir(target)
with tarfile.open(fname, 'r') as zf:
# TODO: check that all the zf.getnames() files do not escape the
# extract directory (no leading '../', '/')
zf.extractall(target)
return target
def make_init(dirname):
'''
Create a _distributor_init.py file for OpenBlas
'''
with open(os.path.join(dirname, '_distributor_init.py'), 'wt') as fid:
fid.write(textwrap.dedent("""
'''
Helper to preload windows dlls to prevent dll not found errors.
Once a DLL is preloaded, its namespace is made available to any
subsequent DLL. This file originated in the numpy-wheels repo,
and is created as part of the scripts that build the wheel.
'''
import os
from ctypes import WinDLL
import glob
if os.name == 'nt':
# convention for storing / loading the DLL from
# numpy/.libs/, if present
try:
basedir = os.path.dirname(__file__)
except:
pass
else:
libs_dir = os.path.abspath(os.path.join(basedir, '.libs'))
DLL_filenames = []
if os.path.isdir(libs_dir):
for filename in glob.glob(os.path.join(libs_dir,
'*openblas*dll')):
# NOTE: would it change behavior to load ALL
# DLLs at this path vs. the name restriction?
WinDLL(os.path.abspath(filename))
DLL_filenames.append(filename)
if len(DLL_filenames) > 1:
import warnings
warnings.warn("loaded more than 1 DLL from .libs:\\n%s" %
"\\n".join(DLL_filenames),
stacklevel=1)
"""))
def test_setup(arches):
'''
Make sure all the downloadable files exist and can be opened
'''
for arch in arches:
if arch == '':
continue
try:
target = setup_openblas(arch)
except:
print('Could not setup %s' % arch)
raise
if not target:
raise RuntimeError('Could not setup %s' % arch)
print(target)
def test_version(expected_version):
"""
Assert that expected OpenBLAS version is
actually available via NumPy
"""
import numpy
import ctypes
dll = ctypes.CDLL(numpy.core._multiarray_umath.__file__)
get_config = dll.openblas_get_config
get_config.restype=ctypes.c_char_p
res = get_config()
print('OpenBLAS get_config returned', str(res))
check_str = b'OpenBLAS %s' % expected_version[0].encode()
assert check_str in res
if __name__ == '__main__':
import argparse
parser = argparse.ArgumentParser(
description='Download and expand an OpenBLAS archive for this ' \
'architecture')
parser.add_argument('--test', nargs='*', default=None,
help='Test different architectures. "all", or any of %s' % ARCHITECTURES)
parser.add_argument('--check_version', nargs=1, default=None,
help='Check provided OpenBLAS version string against available OpenBLAS')
args = parser.parse_args()
if args.check_version is not None:
test_version(args.check_version)
elif args.test is None:
print(setup_openblas())
else:
if len(args.test) == 0 or 'all' in args.test:
test_setup(ARCHITECTURES)
else:
test_setup(args.test)