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import os
import json
import sys
import threadpoolctl
from glob import glob
from os.path import dirname, normpath
from subprocess import check_output
# Path to shipped openblas for libraries such as numpy or scipy
libopenblas_patterns = []
try:
# make sure the mkl/blas are loaded for test_threadpool_limits
import numpy as np
np.dot(np.ones(1000), np.ones(1000))
libopenblas_patterns.append(os.path.join(np.__path__[0], ".libs", "libopenblas*"))
except ImportError:
pass
try:
import scipy
import scipy.linalg # noqa: F401
scipy.linalg.svd([[1, 2], [3, 4]])
libopenblas_patterns.append(
os.path.join(scipy.__path__[0], ".libs", "libopenblas*")
)
except ImportError:
scipy = None
libopenblas_paths = set(
path for pattern in libopenblas_patterns for path in glob(pattern)
)
try:
import tests._openmp_test_helper.openmp_helpers_inner # noqa: F401
cython_extensions_compiled = True
except ImportError:
cython_extensions_compiled = False
try:
from tests._openmp_test_helper.nested_prange_blas import check_nested_prange_blas
except ImportError:
check_nested_prange_blas = None
def threadpool_info_from_subprocess(module):
"""Utility to call threadpool_info in a subprocess
`module` is imported before calling threadpool_info
"""
# set PYTHONPATH to import from non sub-modules
path1 = normpath(dirname(threadpoolctl.__file__))
path2 = os.path.join(path1, "tests", "_openmp_test_helper")
pythonpath = os.pathsep.join([path1, path2])
env = os.environ.copy()
try:
env["PYTHONPATH"] = os.pathsep.join([pythonpath, env["PYTHONPATH"]])
except KeyError:
env["PYTHONPATH"] = pythonpath
cmd = [sys.executable, "-m", "threadpoolctl", "-i", module]
out = check_output(cmd, env=env).decode("utf-8")
return json.loads(out)
def select(info, **kwargs):
"""Select a subset of the list of library info matching the request"""
# It's just a utility function to avoid repeating the pattern
# [lib_info for lib_info in info if lib_info["<key>"] == key]
for key, vals in kwargs.items():
kwargs[key] = [vals] if not isinstance(vals, list) else vals
selected_info = [
lib_info
for lib_info in info
if any(lib_info.get(key, None) in vals for key, vals in kwargs.items())
]
return selected_info
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