| /* |
| * 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.runtime.controlprogram.parfor.opt; |
| |
| import org.apache.sysds.hops.cost.CostEstimationWrapper; |
| import org.apache.sysds.lops.LopProperties.ExecType; |
| import org.apache.sysds.runtime.controlprogram.LocalVariableMap; |
| import org.apache.sysds.runtime.controlprogram.ProgramBlock; |
| import org.apache.sysds.runtime.controlprogram.context.ExecutionContext; |
| import org.apache.sysds.runtime.controlprogram.context.ExecutionContextFactory; |
| |
| /** |
| * Cost estimator for runtime programs. Previously this estimator used an offline created |
| * performance profile. Since SystemDS 1.0, this estimator uses a time-based cost model |
| * that relies on floating operations and I/O, which does not require explicit profiling. |
| * |
| */ |
| public class CostEstimatorRuntime extends CostEstimator |
| { |
| private final CostEstimatorHops _costMem; |
| private final OptTreePlanMappingAbstract _map; |
| private final ExecutionContext _ec; |
| |
| public CostEstimatorRuntime(OptTreePlanMappingAbstract map, LocalVariableMap vars ) { |
| _costMem = new CostEstimatorHops(map); |
| _map = map; |
| |
| //construct execution context as wrapper to hand over |
| //deep copied symbol table to cost estimator |
| _ec = ExecutionContextFactory.createContext(); |
| _ec.setVariables(vars); |
| } |
| |
| @Override |
| public double getLeafNodeEstimate( TestMeasure measure, OptNode node ) { |
| //use CostEstimatorHops to get the memory estimate |
| if( measure == TestMeasure.MEMORY_USAGE ) |
| return _costMem.getLeafNodeEstimate(measure, node); |
| |
| //redirect to exec-type-specific estimate |
| return getLeafNodeEstimate(measure, node, node.isCPOnly() ? ExecType.CP : ExecType.SPARK); |
| } |
| |
| @Override |
| public double getLeafNodeEstimate( TestMeasure measure, OptNode node, ExecType et ) { |
| //use CostEstimatorHops to get the memory estimate |
| if( measure == TestMeasure.MEMORY_USAGE ) |
| return _costMem.getLeafNodeEstimate(measure, node, et); |
| |
| //use static cost estimator based on floating point operations |
| //(currently only called for entire parfor program in order to |
| //decide for LOCAL vs REMOTE parfor execution) |
| double ret = DEFAULT_TIME_ESTIMATE; |
| boolean isCP = (et == ExecType.CP || et == null); |
| if( !node.isLeaf() && isCP ) { |
| ProgramBlock pb = (ProgramBlock)_map.getMappedProg(node.getID())[1]; |
| ret = CostEstimationWrapper.getTimeEstimate(pb, _ec, true); |
| } |
| return ret; |
| } |
| } |