77 lines
2.6 KiB
Python
77 lines
2.6 KiB
Python
# Copyright (c) 2018 Intel.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Track resources like FPGA GPU and QAT for a host. Provides the
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conductor with useful information about availability through the accelerator
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model.
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"""
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from oslo_log import log as logging
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from stevedore import driver
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from stevedore.extension import ExtensionManager
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from cyborg.common import exception
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from cyborg.common import utils
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from cyborg.conf import CONF
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LOG = logging.getLogger(__name__)
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AGENT_RESOURCE_SEMAPHORE = "agent_resources"
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class ResourceTracker(object):
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"""Agent helper class for keeping track of resource usage as instances
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are built and destroyed.
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"""
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def __init__(self, host, cond_api):
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self.host = host
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self.conductor_api = cond_api
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self.acc_drivers = []
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self._initialize_drivers()
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def _initialize_drivers(self, enabled_drivers=[]):
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"""
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Load accelerator drivers.
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:return: [nvidia_gpu_driver_obj, intel_fpga_driver_obj]
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"""
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acc_drivers = []
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if not enabled_drivers:
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enabled_drivers = CONF.agent.enabled_drivers
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valid_drivers = ExtensionManager(
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namespace='cyborg.accelerator.driver').names()
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for d in enabled_drivers:
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if d not in valid_drivers:
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raise exception.InvalidDriver(name=d)
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acc_driver = driver.DriverManager(
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namespace='cyborg.accelerator.driver', name=d,
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invoke_on_load=True).driver
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acc_drivers.append(acc_driver)
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self.acc_drivers = acc_drivers
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@utils.synchronized(AGENT_RESOURCE_SEMAPHORE)
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def update_usage(self, context):
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"""Update the resource usage periodically.
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"""
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acc_list = []
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for acc_driver in self.acc_drivers:
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acc_list.extend(acc_driver.discover())
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# Call conductor_api here to diff and report acc data. Now, we actually
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# do not have the method report_data.
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if acc_list:
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self.conductor_api.report_data(context, self.host, acc_list)
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