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
|
import sys
import subprocess
import os
import platform
import collections
import re
import tempfile
def fix_win_bin_name(name):
res = os.path.normpath(name)
if not os.path.splitext(name)[1]:
return res + '.exe'
return res
def find_compiler_bindir(command):
for idx, word in enumerate(command):
if '--compiler-bindir' in word:
return idx
return None
def is_clang(command):
cmplr_dir_idx = find_compiler_bindir(command)
return cmplr_dir_idx is not None and 'clang' in command[cmplr_dir_idx]
def fix_win(command, flags):
if platform.system().lower() == "windows":
command[0] = fix_win_bin_name(command[0])
cmplr_dir_idx = find_compiler_bindir(command)
if cmplr_dir_idx is not None:
key, value = command[cmplr_dir_idx].split('=')
command[cmplr_dir_idx] = key + '=' + fix_win_bin_name(value)
def main():
try:
sys.argv.remove('--y_skip_nocxxinc')
skip_nocxxinc = True
except ValueError:
skip_nocxxinc = False
spl = sys.argv.index('--cflags')
cmd = 1
mtime0 = None
if sys.argv[1] == '--mtime':
mtime0 = sys.argv[2]
cmd = 3
if sys.argv[cmd] == '--custom-pid':
custom_pid = sys.argv[4]
cmd = 5
command = sys.argv[cmd:spl]
cflags = sys.argv[spl + 1 :]
dump_args = False
if '--y_dump_args' in command:
command.remove('--y_dump_args')
dump_args = True
fix_win(command, cflags)
executable = command[0]
if not os.path.exists(executable):
print >> sys.stderr, '{} not found'.format(executable)
sys.exit(1)
if is_clang(command):
# nvcc concatenates the sources for clang, and clang reports unused
# things from .h files as if they they were defined in a .cpp file.
cflags += ['-Wno-unused-function', '-Wno-unused-parameter']
if not is_clang(command) and '-fopenmp=libomp' in cflags:
cflags.append('-fopenmp')
cflags.remove('-fopenmp=libomp')
skip_list = [
'-gline-tables-only',
# clang coverage
'-fprofile-instr-generate',
'-fcoverage-mapping',
'/Zc:inline', # disable unreferenced functions (kernel registrators) remove
'-Wno-c++17-extensions',
'-flto',
'-faligned-allocation',
'-fsized-deallocation',
# While it might be reasonable to compile host part of .cu sources with these optimizations enabled,
# nvcc passes these options down towards cicc which lacks x86_64 extensions support.
'-msse2',
'-msse3',
'-mssse3',
'-msse4.1',
'-msse4.2',
]
if skip_nocxxinc:
skip_list.append('-nostdinc++')
for flag in skip_list:
if flag in cflags:
cflags.remove(flag)
skip_prefix_list = [
'-fsanitize=',
'-fsanitize-coverage=',
'-fsanitize-blacklist=',
'--system-header-prefix',
]
new_cflags = []
for flag in cflags:
if all(not flag.startswith(skip_prefix) for skip_prefix in skip_prefix_list):
if flag.startswith('-fopenmp-version='):
new_cflags.append(
'-fopenmp-version=45'
) # Clang 11 only supports OpenMP 4.5, but the default is 5.0, so we need to forcefully redefine it.
else:
new_cflags.append(flag)
cflags = new_cflags
if not is_clang(command):
def good(arg):
if arg.startswith('--target='):
return False
return True
cflags = filter(good, cflags)
cpp_args = []
compiler_args = []
# NVCC requires particular MSVC versions which may differ from the version
# used to compile regular C++ code. We have a separate MSVC in Arcadia for
# the CUDA builds and pass it's root in $Y_VC_Root.
# The separate MSVC for CUDA may absent in Yandex Open Source builds.
vc_root = os.environ.get('Y_VC_Root')
cflags_queue = collections.deque(cflags)
while cflags_queue:
arg = cflags_queue.popleft()
if arg == '-mllvm':
compiler_args.append(arg)
compiler_args.append(cflags_queue.popleft())
continue
if arg[:2].upper() in ('-I', '/I', '-B'):
value = arg[2:]
if not value:
value = cflags_queue.popleft()
if arg[1] == 'I':
cpp_args.append('-I{}'.format(value))
elif arg[1] == 'B': # todo: delete "B" flag check when cuda stop to use gcc
pass
continue
match = re.match(r'[-/]D(.*)', arg)
if match:
define = match.group(1)
# We have C++ flags configured for the regular C++ build.
# There is Y_MSVC_INCLUDE define with a path to the VC header files.
# We need to change the path accordingly when using a separate MSVC for CUDA.
if vc_root and define.startswith('Y_MSVC_INCLUDE'):
define = os.path.expandvars('Y_MSVC_INCLUDE={}/include'.format(vc_root))
cpp_args.append('-D' + define.replace('\\', '/'))
continue
compiler_args.append(arg)
command += cpp_args
if compiler_args:
command += ['--compiler-options', ','.join(compiler_args)]
# --keep is necessary to prevent nvcc from embedding nvcc pid in generated
# symbols. It makes nvcc use the original file name as the prefix in the
# generated files (otherwise it also prepends tmpxft_{pid}_00000000-5), and
# cicc derives the module name from its {input}.cpp1.ii file name.
command += ['--keep', '--keep-dir', tempfile.mkdtemp(prefix='compile_cuda.py.')]
# nvcc generates symbols like __fatbinwrap_{len}_{basename}_{hash}_{pid} where
# {basename} is {input}.cpp1.ii with non-C chars translated to _, {len} is
# {basename} length, {hash} is the hash of first exported symbol in
# {input}.cpp1.ii if there is one, otherwise it is based on its modification
# time (converted to string in the local timezone) and the current working
# directory, and {pid} is a pid of nvcc process. To stabilize the names of
# these symbols we need to fix mtime, timezone, cwd and pid.
preload = [os.environ.get('LD_PRELOAD', ''), mtime0, custom_pid]
os.environ['LD_PRELOAD'] = ' '.join(filter(None, preload))
os.environ['TZ'] = 'UTC0' # POSIX fixed offset format.
os.environ['TZDIR'] = '/var/empty' # Against counterfeit /usr/share/zoneinfo/$TZ.
if dump_args:
sys.stdout.write('\n'.join(command))
else:
sys.exit(subprocess.Popen(command, stdout=sys.stderr, stderr=sys.stderr, cwd='/').wait())
if __name__ == '__main__':
main()
|
