| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.gpu; |
| |
| import org.apache.hadoop.yarn.api.records.Resource; |
| import org.apache.hadoop.yarn.api.records.ResourceInformation; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.NodeResourceUpdaterPlugin; |
| import org.apache.hadoop.yarn.util.resource.ResourceUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import static org.apache.hadoop.yarn.api.records.ResourceInformation.GPU_URI; |
| |
| public class GpuNodeResourceUpdateHandler extends NodeResourceUpdaterPlugin { |
| private static final Logger LOG = |
| LoggerFactory.getLogger(GpuNodeResourceUpdateHandler.class); |
| |
| @Override |
| public void updateConfiguredResource(Resource res) throws YarnException { |
| LOG.info("Initializing configured GPU resources for the NodeManager."); |
| |
| List<GpuDevice> usableGpus = |
| GpuDiscoverer.getInstance().getGpusUsableByYarn(); |
| if (null == usableGpus || usableGpus.isEmpty()) { |
| String message = "GPU is enabled, but couldn't find any usable GPUs on the " |
| + "NodeManager."; |
| LOG.error(message); |
| // No gpu can be used by YARN. |
| throw new YarnException(message); |
| } |
| |
| long nUsableGpus = usableGpus.size(); |
| |
| Map<String, ResourceInformation> configuredResourceTypes = |
| ResourceUtils.getResourceTypes(); |
| if (!configuredResourceTypes.containsKey(GPU_URI)) { |
| throw new YarnException("Found " + nUsableGpus + " usable GPUs, however " |
| + GPU_URI |
| + " resource-type is not configured inside" |
| + " resource-types.xml, please configure it to enable GPU feature or" |
| + " remove " + GPU_URI + " from " |
| + YarnConfiguration.NM_RESOURCE_PLUGINS); |
| } |
| |
| res.setResourceValue(GPU_URI, nUsableGpus); |
| } |
| } |