| /* |
| * 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.sysds.hops.cost; |
| |
| import java.util.HashMap; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.sysds.runtime.DMLRuntimeException; |
| import org.apache.sysds.runtime.controlprogram.LocalVariableMap; |
| import org.apache.sysds.runtime.controlprogram.Program; |
| import org.apache.sysds.runtime.controlprogram.ProgramBlock; |
| import org.apache.sysds.runtime.controlprogram.context.ExecutionContext; |
| import org.apache.sysds.runtime.controlprogram.parfor.stat.Timing; |
| |
| public class CostEstimationWrapper |
| { |
| |
| public enum CostType { |
| NUM_MRJOBS, //based on number of MR jobs, [number MR jobs] |
| STATIC // based on FLOPS, read/write, etc, [time in sec] |
| } |
| |
| private static final Log LOG = LogFactory.getLog(CostEstimationWrapper.class.getName()); |
| private static final CostType DEFAULT_COSTTYPE = CostType.STATIC; |
| |
| private static CostEstimator _costEstim = null; |
| |
| |
| static |
| { |
| |
| //create cost estimator |
| try |
| { |
| //TODO config parameter? |
| _costEstim = createCostEstimator(DEFAULT_COSTTYPE); |
| } |
| catch(Exception ex) |
| { |
| LOG.error("Failed cost estimator initialization.", ex); |
| } |
| } |
| |
| public static double getTimeEstimate(Program rtprog, ExecutionContext ec) { |
| Timing time = new Timing(true); |
| |
| HashMap<String,VarStats> stats = new HashMap<>(); |
| LocalVariableMap vars = (ec!=null)? ec.getVariables() : new LocalVariableMap(); |
| |
| double costs = _costEstim.getTimeEstimate(rtprog, vars, stats); |
| LOG.debug("Finished estimation in "+time.stop()+"ms."); |
| return costs; |
| } |
| |
| public static double getTimeEstimate(ProgramBlock pb, ExecutionContext ec, boolean recursive) { |
| Timing time = new Timing(true); |
| |
| HashMap<String,VarStats> stats = new HashMap<>(); |
| LocalVariableMap vars = (ec!=null)? ec.getVariables() : new LocalVariableMap(); |
| |
| double costs = _costEstim.getTimeEstimate(pb, vars, stats, recursive); |
| LOG.debug("Finished estimation in "+time.stop()+"ms."); |
| return costs; |
| } |
| |
| private static CostEstimator createCostEstimator( CostType type ) { |
| switch( type ) |
| { |
| case STATIC: |
| return new CostEstimatorStaticRuntime(); |
| default: |
| throw new DMLRuntimeException("Unknown cost type: "+type); |
| } |
| } |
| } |