def runScript(N):
script = 'elemwise_time_test.py'
path = os.path.dirname(os.path.abspath(__file__))
proc = subprocess.Popen(['python', script, '--script', '-N', str(N)],
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
cwd=path)
(out, err) = proc.communicate()
if err:
print(err)
sys.exit()
return list(map(float, decode_with(out, console_encoding).split(" ")))
def runScript(N):
script = 'elemwise_time_test.py'
path = os.path.dirname(os.path.abspath(__file__))
proc = subprocess.Popen(['python', script, '--script', '-N',
str(N)],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=path)
(out, err) = proc.communicate()
if err:
print(err)
sys.exit()
return list(map(float, decode_with(out, console_encoding).split(" ")))
def compile_str(module_name,
src_code,
location=None,
include_dirs=[],
lib_dirs=[],
libs=[],
preargs=[],
rpaths=rpath_defaults,
py_module=True,
hide_symbols=True):
"""
Parameters
----------
module_name: str
This has been embedded in the src_code.
src_code
A complete c or c++ source listing for the module.
location
A pre-existing filesystem directory where the
cpp file and .so will be written.
include_dirs
A list of include directory names (each gets prefixed with -I).
lib_dirs
A list of library search path directory names (each gets
prefixed with -L).
libs
A list of libraries to link with (each gets prefixed with -l).
preargs
A list of extra compiler arguments.
rpaths
List of rpaths to use with Xlinker. Defaults to `rpath_defaults`.
py_module
If False, compile to a shared library, but
do not import as a Python module.
hide_symbols
If True (the default), hide all symbols from the library symbol
table unless explicitely exported.
Returns
-------
module
Dynamically-imported python module of the compiled code.
(unless py_module is False, in that case returns None.)
Notes
-----
On Windows 7 with nvcc 3.1 we need to compile in the real directory
Otherwise nvcc never finish.
"""
# Remove empty string directory
include_dirs = [d for d in include_dirs if d]
lib_dirs = [d for d in lib_dirs if d]
rpaths = list(rpaths)
if sys.platform == "win32":
# Remove some compilation args that cl.exe does not understand.
# cl.exe is the compiler used by nvcc on Windows.
for a in [
"-Wno-write-strings", "-Wno-unused-label",
"-Wno-unused-variable", "-fno-math-errno"
]:
if a in preargs:
preargs.remove(a)
if preargs is None:
preargs = []
else:
preargs = list(preargs)
if sys.platform != 'win32':
preargs.append('-fPIC')
if config.cmodule.remove_gxx_opt:
preargs = [p for p in preargs if not p.startswith('-O')]
cuda_root = config.cuda.root
# The include dirs gived by the user should have precedence over
# the standards ones.
include_dirs = include_dirs + std_include_dirs()
if os.path.abspath(os.path.split(__file__)[0]) not in include_dirs:
include_dirs.append(os.path.abspath(os.path.split(__file__)[0]))
libs = libs + std_libs()
if 'cudart' not in libs:
libs.append('cudart')
lib_dirs = lib_dirs + std_lib_dirs()
if sys.platform != 'darwin':
# config.dnn.include_path add this by default for cudnn in the
# new back-end. This should not be used in this back-end. So
# just remove them.
lib_dirs = [
ld for ld in lib_dirs
if not (ld == os.path.join(cuda_root, 'lib')
or ld == os.path.join(cuda_root, 'lib64'))
]
if sys.platform != 'darwin':
# sometimes, the linker cannot find -lpython so we need to tell it
# explicitly where it is located
# this returns somepath/lib/python2.x
python_lib = distutils.sysconfig.get_python_lib(plat_specific=1,
standard_lib=1)
python_lib = os.path.dirname(python_lib)
if python_lib not in lib_dirs:
lib_dirs.append(python_lib)
cppfilename = os.path.join(location, 'mod.cu')
with open(cppfilename, 'w') as cppfile:
_logger.debug('Writing module C++ code to %s', cppfilename)
cppfile.write(src_code)
lib_filename = os.path.join(
location, '%s.%s' % (module_name, get_lib_extension()))
_logger.debug('Generating shared lib %s', lib_filename)
# TODO: Why do these args cause failure on gtx285 that has 1.3
# compute capability? '--gpu-architecture=compute_13',
# '--gpu-code=compute_13',
# nvcc argument
preargs1 = []
preargs2 = []
for pa in preargs:
if pa.startswith('-Wl,'):
# the -rpath option is not understood by the Microsoft linker
if sys.platform != 'win32' or not pa.startswith('-Wl,-rpath'):
preargs1.append('-Xlinker')
preargs1.append(pa[4:])
continue
for pattern in [
'-O', '-arch=', '-ccbin=', '-G', '-g', '-I', '-L',
'--fmad', '--ftz', '--maxrregcount', '--prec-div',
'--prec-sqrt', '--use_fast_math', '-fmad', '-ftz',
'-maxrregcount', '-prec-div', '-prec-sqrt',
'-use_fast_math', '--use-local-env', '--cl-version='
]:
if pa.startswith(pattern):
preargs1.append(pa)
break
else:
preargs2.append(pa)
# Don't put -G by default, as it slow things down.
# We aren't sure if -g slow things down, so we don't put it by default.
cmd = [nvcc_path, '-shared'] + preargs1
if config.nvcc.compiler_bindir:
cmd.extend(['--compiler-bindir', config.nvcc.compiler_bindir])
if sys.platform == 'win32':
# add flags for Microsoft compiler to create .pdb files
preargs2.extend(['/Zi', '/MD'])
cmd.extend(['-Xlinker', '/DEBUG'])
# remove the complaints for the duplication of `double round(double)`
# in both math_functions.h and pymath.h,
# by not including the one in pymath.h
cmd.extend(['-D HAVE_ROUND'])
else:
if hide_symbols:
preargs2.append('-fvisibility=hidden')
if local_bitwidth() == 64:
cmd.append('-m64')
else:
cmd.append('-m32')
if len(preargs2) > 0:
cmd.extend(['-Xcompiler', ','.join(preargs2)])
# We should not use rpath if possible. If the user provided
# provided an cuda.root flag, we need to add one, but
# otherwise, we don't add it. See gh-1540 and
# https://wiki.debian.org/RpathIssue for details.
if (not type(config.cuda).root.is_default
and os.path.exists(os.path.join(config.cuda.root, 'lib'))):
rpaths.append(os.path.join(config.cuda.root, 'lib'))
if sys.platform != 'darwin':
# the CUDA libs are universal (contain both 32-bit and 64-bit)
rpaths.append(os.path.join(config.cuda.root, 'lib64'))
if sys.platform != 'win32':
# the -rpath option is not understood by the Microsoft linker
for rpath in rpaths:
cmd.extend(['-Xlinker', ','.join(['-rpath', rpath])])
cmd.extend('-I%s' % idir for idir in include_dirs)
cmd.extend(['-o', lib_filename])
cmd.append(os.path.split(cppfilename)[-1])
cmd.extend(['-L%s' % ldir for ldir in lib_dirs])
cmd.extend(['-l%s' % l for l in libs])
if sys.platform == 'darwin':
# This tells the compiler to use the already-loaded python
# symbols (which should always be the right ones).
cmd.extend(['-Xcompiler', '-undefined,dynamic_lookup'])
# Remove "-u Symbol" arguments, since they are usually not
# relevant for the new compilation, even if they were used for
# compiling python. If they are necessary, the nvcc syntax is
# "-U Symbol" with a capital U.
done = False
while not done:
try:
indexof = cmd.index('-u')
cmd.pop(indexof) # Remove -u
cmd.pop(indexof) # Remove argument to -u
except ValueError as e:
done = True
# CUDA Toolkit v4.1 Known Issues:
# Host linker on Mac OS 10.7 (and 10.6 for me) passes -no_pie option
# to nvcc this option is not recognized and generates an error
# http://stackoverflow.com/questions/9327265/nvcc-unknown-option-no-pie
# Passing -Xlinker -pie stops -no_pie from getting passed
if sys.platform == 'darwin' and nvcc_version >= '4.1':
cmd.extend(['-Xlinker', '-pie'])
# cmd.append("--ptxas-options=-v") #uncomment this to see
# register and shared-mem requirements
_logger.debug('Running cmd %s', ' '.join(cmd))
orig_dir = os.getcwd()
try:
os.chdir(location)
p = subprocess.Popen(cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
nvcc_stdout_raw, nvcc_stderr_raw = p.communicate()[:2]
console_encoding = getpreferredencoding()
nvcc_stdout = decode_with(nvcc_stdout_raw, console_encoding)
nvcc_stderr = decode_with(nvcc_stderr_raw, console_encoding)
finally:
os.chdir(orig_dir)
for eline in nvcc_stderr.split('\n'):
if not eline:
continue
if 'skipping incompatible' in eline:
# ld is skipping an incompatible library
continue
if 'declared but never referenced' in eline:
continue
if 'statement is unreachable' in eline:
continue
_logger.info("NVCC: %s", eline)
if p.returncode:
for i, l in enumerate(src_code.split('\n')):
print(i + 1, l, file=sys.stderr)
print('===============================', file=sys.stderr)
# filter the output from the compiler
for l in nvcc_stderr.split('\n'):
if not l:
continue
# filter out the annoying declaration warnings
try:
if l[l.index(':'):].startswith(': warning: variable'):
continue
if l[l.index(':'):].startswith(': warning: label'):
continue
except Exception:
pass
print(l, file=sys.stderr)
print(nvcc_stdout)
print(cmd)
raise Exception('nvcc return status', p.returncode, 'for cmd',
' '.join(cmd))
elif config.cmodule.compilation_warning and nvcc_stdout:
print(nvcc_stdout)
# On Windows, nvcc print useless stuff by default
if sys.platform != 'win32' and nvcc_stdout:
# this doesn't happen to my knowledge
print("DEBUG: nvcc STDOUT", nvcc_stdout, file=sys.stderr)
if py_module:
# touch the __init__ file
open(os.path.join(location, "__init__.py"), 'w').close()
return dlimport(lib_filename)
def compile_str(
module_name, src_code,
location=None, include_dirs=[], lib_dirs=[], libs=[], preargs=[],
rpaths=rpath_defaults, py_module=True, hide_symbols=True):
"""
Parameters
----------
module_name: str
This has been embedded in the src_code.
src_code
A complete c or c++ source listing for the module.
location
A pre-existing filesystem directory where the
cpp file and .so will be written.
include_dirs
A list of include directory names (each gets prefixed with -I).
lib_dirs
A list of library search path directory names (each gets
prefixed with -L).
libs
A list of libraries to link with (each gets prefixed with -l).
preargs
A list of extra compiler arguments.
rpaths
List of rpaths to use with Xlinker. Defaults to `rpath_defaults`.
py_module
If False, compile to a shared library, but
do not import as a Python module.
hide_symbols
If True (the default), hide all symbols from the library symbol
table unless explicitely exported.
Returns
-------
module
Dynamically-imported python module of the compiled code.
(unless py_module is False, in that case returns None.)
Notes
-----
On Windows 7 with nvcc 3.1 we need to compile in the real directory
Otherwise nvcc never finish.
"""
# Remove empty string directory
include_dirs = [d for d in include_dirs if d]
lib_dirs = [d for d in lib_dirs if d]
rpaths = list(rpaths)
if sys.platform == "win32":
# Remove some compilation args that cl.exe does not understand.
# cl.exe is the compiler used by nvcc on Windows.
for a in ["-Wno-write-strings", "-Wno-unused-label",
"-Wno-unused-variable", "-fno-math-errno"]:
if a in preargs:
preargs.remove(a)
if preargs is None:
preargs = []
else:
preargs = list(preargs)
if sys.platform != 'win32':
preargs.append('-fPIC')
if config.cmodule.remove_gxx_opt:
preargs = [p for p in preargs if not p.startswith('-O')]
cuda_root = config.cuda.root
# The include dirs gived by the user should have precedence over
# the standards ones.
include_dirs = include_dirs + std_include_dirs()
if os.path.abspath(os.path.split(__file__)[0]) not in include_dirs:
include_dirs.append(os.path.abspath(os.path.split(__file__)[0]))
libs = libs + std_libs()
if 'cudart' not in libs:
libs.append('cudart')
lib_dirs = lib_dirs + std_lib_dirs()
if sys.platform != 'darwin':
# config.dnn.include_path add this by default for cudnn in the
# new back-end. This should not be used in this back-end. So
# just remove them.
lib_dirs = [ld for ld in lib_dirs if
not(ld == os.path.join(cuda_root, 'lib') or
ld == os.path.join(cuda_root, 'lib64'))]
if sys.platform != 'darwin':
# sometimes, the linker cannot find -lpython so we need to tell it
# explicitly where it is located
# this returns somepath/lib/python2.x
python_lib = distutils.sysconfig.get_python_lib(plat_specific=1,
standard_lib=1)
python_lib = os.path.dirname(python_lib)
if python_lib not in lib_dirs:
lib_dirs.append(python_lib)
if (config.nvcc.cudafe == 'heuristic' and not
any(marker in src_code for marker in ("__global__", "__device__",
"__host__", "<<<",
"nvmatrix.cuh"))):
# only calls existing CUDA functions, can compile much faster
cppfilename = os.path.join(location, 'mod.cpp')
src_code = ("#include <cuda.h>\n"
"#include <cuda_runtime_api.h>\n" +
src_code)
else:
# contains CUDA host code or device functions, needs .cu extension
cppfilename = os.path.join(location, 'mod.cu')
with open(cppfilename, 'w') as cppfile:
_logger.debug('Writing module C++ code to %s', cppfilename)
cppfile.write(src_code)
lib_filename = os.path.join(
location, '%s.%s' %
(module_name, get_lib_extension()))
_logger.debug('Generating shared lib %s', lib_filename)
# TODO: Why do these args cause failure on gtx285 that has 1.3
# compute capability? '--gpu-architecture=compute_13',
# '--gpu-code=compute_13',
# nvcc argument
preargs1 = []
preargs2 = []
for pa in preargs:
if pa.startswith('-Wl,'):
# the -rpath option is not understood by the Microsoft linker
if sys.platform != 'win32' or not pa.startswith('-Wl,-rpath'):
preargs1.append('-Xlinker')
preargs1.append(pa[4:])
continue
for pattern in ['-O', '-arch=', '-ccbin=', '-G', '-g', '-I',
'-L', '--fmad', '--ftz', '--maxrregcount',
'--prec-div', '--prec-sqrt', '--use_fast_math',
'-fmad', '-ftz', '-maxrregcount',
'-prec-div', '-prec-sqrt', '-use_fast_math',
'--use-local-env', '--cl-version=', '-std=']:
if pa.startswith(pattern):
preargs1.append(pa)
break
else:
preargs2.append(pa)
# Don't put -G by default, as it slow things down.
# We aren't sure if -g slow things down, so we don't put it by default.
cmd = [nvcc_path, '-shared'] + preargs1
if config.nvcc.compiler_bindir:
cmd.extend(['--compiler-bindir', config.nvcc.compiler_bindir])
if sys.platform == 'win32':
# add flags for Microsoft compiler to create .pdb files
preargs2.extend(['/Zi', '/MD'])
cmd.extend(['-Xlinker', '/DEBUG'])
# remove the complaints for the duplication of `double round(double)`
# in both math_functions.h and pymath.h,
# by not including the one in pymath.h
cmd.extend(['-D HAVE_ROUND'])
else:
if hide_symbols:
preargs2.append('-fvisibility=hidden')
if local_bitwidth() == 64:
cmd.append('-m64')
else:
cmd.append('-m32')
if len(preargs2) > 0:
cmd.extend(['-Xcompiler', ','.join(preargs2)])
# We should not use rpath if possible. If the user provided
# provided an cuda.root flag, we need to add one, but
# otherwise, we don't add it. See gh-1540 and
# https://wiki.debian.org/RpathIssue for details.
if (not type(config.cuda).root.is_default and
os.path.exists(os.path.join(config.cuda.root, 'lib'))):
rpaths.append(os.path.join(config.cuda.root, 'lib'))
if sys.platform != 'darwin':
# the CUDA libs are universal (contain both 32-bit and 64-bit)
rpaths.append(os.path.join(config.cuda.root, 'lib64'))
if sys.platform != 'win32':
# the -rpath option is not understood by the Microsoft linker
for rpath in rpaths:
cmd.extend(['-Xlinker', ','.join(['-rpath', rpath])])
# to support path that includes spaces, we need to wrap it with double quotes on Windows
path_wrapper = "\"" if os.name == 'nt' else ""
cmd.extend(['-I%s%s%s' % (path_wrapper, idir, path_wrapper) for idir in include_dirs])
cmd.extend(['-L%s%s%s' % (path_wrapper, ldir, path_wrapper) for ldir in lib_dirs])
cmd.extend(['-o', lib_filename])
cmd.append(os.path.split(cppfilename)[-1])
cmd.extend(['-l%s' % l for l in libs])
if sys.platform == 'darwin':
# This tells the compiler to use the already-loaded python
# symbols (which should always be the right ones).
cmd.extend(['-Xcompiler', '-undefined,dynamic_lookup'])
# Remove "-u Symbol" arguments, since they are usually not
# relevant for the new compilation, even if they were used for
# compiling python. If they are necessary, the nvcc syntax is
# "-U Symbol" with a capital U.
done = False
while not done:
try:
indexof = cmd.index('-u')
cmd.pop(indexof) # Remove -u
cmd.pop(indexof) # Remove argument to -u
except ValueError:
done = True
# CUDA Toolkit v4.1 Known Issues:
# Host linker on Mac OS 10.7 (and 10.6 for me) passes -no_pie option
# to nvcc this option is not recognized and generates an error
# http://stackoverflow.com/questions/9327265/nvcc-unknown-option-no-pie
# Passing -Xlinker -pie stops -no_pie from getting passed
if sys.platform == 'darwin' and nvcc_version >= '4.1':
cmd.extend(['-Xlinker', '-pie'])
# cmd.append("--ptxas-options=-v") #uncomment this to see
# register and shared-mem requirements
_logger.debug('Running cmd %s', ' '.join(cmd))
orig_dir = os.getcwd()
try:
os.chdir(location)
p = subprocess.Popen(
cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
nvcc_stdout_raw, nvcc_stderr_raw = p.communicate()[:2]
console_encoding = getpreferredencoding()
nvcc_stdout = decode_with(nvcc_stdout_raw, console_encoding)
nvcc_stderr = decode_with(nvcc_stderr_raw, console_encoding)
finally:
os.chdir(orig_dir)
for eline in nvcc_stderr.split('\n'):
if not eline:
continue
if 'skipping incompatible' in eline:
# ld is skipping an incompatible library
continue
if 'declared but never referenced' in eline:
continue
if 'statement is unreachable' in eline:
continue
_logger.info("NVCC: %s", eline)
if p.returncode:
for i, l in enumerate(src_code.split('\n')):
print(i + 1, l, file=sys.stderr)
print('===============================', file=sys.stderr)
# filter the output from the compiler
for l in nvcc_stderr.split('\n'):
if not l:
continue
# filter out the annoying declaration warnings
try:
if l[l.index(':'):].startswith(': warning: variable'):
continue
if l[l.index(':'):].startswith(': warning: label'):
continue
except Exception:
pass
print(l, file=sys.stderr)
print(nvcc_stdout)
print(cmd)
raise Exception('nvcc return status', p.returncode,
'for cmd', ' '.join(cmd))
elif config.cmodule.compilation_warning and nvcc_stdout:
print(nvcc_stdout)
# On Windows, nvcc print useless stuff by default
if sys.platform != 'win32' and nvcc_stdout:
# this doesn't happen to my knowledge
print("DEBUG: nvcc STDOUT", nvcc_stdout, file=sys.stderr)
if py_module:
# touch the __init__ file
open(os.path.join(location, "__init__.py"), 'w').close()
return dlimport(lib_filename)
