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# Copyright 2016 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Library for getting system information during TensorFlow tests."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import glob
import multiprocessing
import platform
import re
import socket
# pylint: disable=g-bad-import-order
# Note: cpuinfo and psutil are not installed for you in the TensorFlow
# OSS tree. They are installable via pip.
import cpuinfo
import psutil
# pylint: enable=g-bad-import-order
from tensorflow.core.util import test_log_pb2
from tensorflow.python.client import device_lib
from tensorflow.python.framework import errors
from tensorflow.python.platform import gfile
from tensorflow.tools.test import gpu_info_lib
def gather_machine_configuration():
"""Gather Machine Configuration. This is the top level fn of this library."""
config = test_log_pb2.MachineConfiguration()
config.cpu_info.CopyFrom(gather_cpu_info())
config.platform_info.CopyFrom(gather_platform_info())
# gather_available_device_info must come before gather_gpu_devices
# because the latter may access libcudart directly, which confuses
# TensorFlow StreamExecutor.
for d in gather_available_device_info():
config.available_device_info.add().CopyFrom(d)
for gpu in gpu_info_lib.gather_gpu_devices():
config.device_info.add().Pack(gpu)
config.memory_info.CopyFrom(gather_memory_info())
config.hostname = gather_hostname()
return config
def gather_hostname():
return socket.gethostname()
def gather_memory_info():
"""Gather memory info."""
mem_info = test_log_pb2.MemoryInfo()
vmem = psutil.virtual_memory()
mem_info.total = vmem.total
mem_info.available = vmem.available
return mem_info
def gather_cpu_info():
"""Gather CPU Information. Assumes all CPUs are the same."""
cpu_info = test_log_pb2.CPUInfo()
cpu_info.num_cores = multiprocessing.cpu_count()
# Gather num_cores_allowed
try:
with gfile.GFile('/proc/self/status', 'rb') as fh:
nc = re.search(r'(?m)^Cpus_allowed:\s*(.*)$', fh.read())
if nc: # e.g. 'ff' => 8, 'fff' => 12
cpu_info.num_cores_allowed = (
bin(int(nc.group(1).replace(',', ''), 16)).count('1'))
except errors.OpError:
pass
finally:
if cpu_info.num_cores_allowed == 0:
cpu_info.num_cores_allowed = cpu_info.num_cores
# Gather the rest
info = cpuinfo.get_cpu_info()
cpu_info.cpu_info = info['brand']
cpu_info.num_cores = info['count']
cpu_info.mhz_per_cpu = info['hz_advertised_raw'][0] / 1.0e6
l2_cache_size = re.match(r'(\d+)', str(info.get('l2_cache_size', '')))
if l2_cache_size:
# If a value is returned, it's in KB
cpu_info.cache_size['L2'] = int(l2_cache_size.group(0)) * 1024
# Try to get the CPU governor
try:
cpu_governors = set([
gfile.GFile(f, 'r').readline().rstrip()
for f in glob.glob(
'/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor')
])
if cpu_governors:
if len(cpu_governors) > 1:
cpu_info.cpu_governor = 'mixed'
else:
cpu_info.cpu_governor = list(cpu_governors)[0]
except errors.OpError:
pass
return cpu_info
def gather_available_device_info():
"""Gather list of devices available to TensorFlow.
Returns:
A list of test_log_pb2.AvailableDeviceInfo messages.
"""
device_info_list = []
devices = device_lib.list_local_devices()
for d in devices:
device_info = test_log_pb2.AvailableDeviceInfo()
device_info.name = d.name
device_info.type = d.device_type
device_info.memory_limit = d.memory_limit
device_info.physical_description = d.physical_device_desc
device_info_list.append(device_info)
return device_info_list
def gather_platform_info():
"""Gather platform info."""
platform_info = test_log_pb2.PlatformInfo()
(platform_info.bits, platform_info.linkage) = platform.architecture()
platform_info.machine = platform.machine()
platform_info.release = platform.release()
platform_info.system = platform.system()
platform_info.version = platform.version()
return platform_info
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