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Declarative Machine Learning
/*
* 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.sysml.hops.globalopt;
import java.util.ArrayList;
import org.apache.sysml.hops.DataOp;
import org.apache.sysml.hops.FunctionOp;
import org.apache.sysml.hops.Hop.DataOpTypes;
import org.apache.sysml.hops.OptimizerUtils;
import org.apache.sysml.hops.globalopt.gdfgraph.GDFNode;
import org.apache.sysml.hops.globalopt.gdfgraph.GDFNode.NodeType;
import org.apache.sysml.lops.LopProperties.ExecType;
import org.apache.sysml.parser.Expression.DataType;
import org.apache.sysml.runtime.controlprogram.parfor.util.IDSequence;
public class Plan
{
private static IDSequence _seqID = new IDSequence();
private long _ID = -1;
private GDFNode _node = null;
private InterestingProperties _ips = null;
private RewriteConfig _conf = null;
private ArrayList _childs = null;
private double _costs = -1;
public Plan(GDFNode node, InterestingProperties ips, RewriteConfig rc, ArrayList childs)
{
_ID = _seqID.getNextID();
_node = node;
_ips = ips;
_conf = rc;
if( childs != null && !childs.isEmpty() )
_childs = childs;
else
_childs = new ArrayList();
}
public Plan( Plan p )
{
_ID = _seqID.getNextID();
_node = p._node;
_ips = new InterestingProperties(p._ips);
_conf = new RewriteConfig(p._conf);
_costs = p._costs;
if( p._childs != null && !p._childs.isEmpty() )
_childs = new ArrayList(p._childs);
else
_childs = new ArrayList();
}
public GDFNode getNode()
{
return _node;
}
public void addChild( Plan c )
{
_childs.add(c);
}
public ArrayList getChilds()
{
return _childs;
}
public InterestingProperties getInterestingProperties()
{
return _ips;
}
public RewriteConfig getRewriteConfig()
{
return _conf;
}
public void setCosts( double costs )
{
_costs = costs;
}
public double getCosts()
{
return _costs;
}
/**
* If operation is executed in MR, all input blocksizes need to match.
* Note that the output blocksize can be different since we would add
* additional reblocks after that operation.
*
* @return
*/
public boolean checkValidBlocksizesInMR()
{
boolean ret = true;
ExecType CLUSTER = OptimizerUtils.isSparkExecutionMode() ? ExecType.SPARK : ExecType.MR;
if( _conf.getExecType()==CLUSTER
&& _childs != null && _childs.size() > 1 )
{
int size0 = _childs.get(0)._conf.getBlockSize();
if( size0 > 0 ) { //-1 compatible with everything
for( Plan c : _childs )
ret &= ( c._conf.getBlockSize() == size0
||c._conf.getBlockSize() <= 0 );
}
}
return ret;
}
/**
*
* @return
*/
public boolean checkValidBlocksizesTRead()
{
boolean ret = true;
if( _node.getNodeType() == NodeType.HOP_NODE
&& _node.getHop() instanceof DataOp
&& ((DataOp)_node.getHop()).getDataOpType() == DataOpTypes.TRANSIENTREAD )
{
for( Plan c : _childs )
ret &= ( _conf.getBlockSize() == c._conf.getBlockSize() );
}
if( _node.getNodeType() == NodeType.CROSS_BLOCK_NODE )
{
for( Plan c : _childs )
ret &= ( _conf.getBlockSize() == c._conf.getBlockSize() );
}
return ret;
}
/**
* If operation is executed in MR, only certain operations allow
* all formats. In general, unary operations also allow for cell inputs.
* TODO: check and test current format assumptions
*
* @param node
* @return
*/
public boolean checkValidFormatInMR()
{
boolean ret = true;
ExecType CLUSTER = OptimizerUtils.isSparkExecutionMode() ? ExecType.SPARK : ExecType.MR;
if( _conf.getExecType()==CLUSTER )
{
if( _childs != null )
for( Plan c : _childs )
ret &= _node.isValidInputFormatForOperation(c._conf.getFormat());
}
return ret;
}
public boolean checkValidExecutionType()
{
boolean ret = true;
ret &= !( _node.getHop() instanceof FunctionOp && _conf.getExecType()!=ExecType.CP );
//unnecessary, because reblock now merged into base hop
//ret &= !( _node.getHop() instanceof ReblockOp && _conf.getExecType()!=ExecType.MR );
return ret;
}
/**
* A plan is defined as preferred if its output interesting properties
* match the interesting properties of all its matrix inputs.
*
* @return
*/
public boolean isPreferredPlan()
{
boolean ret = true;
for( Plan c : _childs )
if( c.getNode().getDataType()==DataType.MATRIX )
ret &= _ips.equals( c.getInterestingProperties() );
return ret;
}
@Override
public String toString()
{
StringBuilder sb = new StringBuilder();
sb.append("PLAN("+_ID+") [");
sb.append(_ips.toString());
sb.append(",");
sb.append(_conf.toString());
sb.append(",{");
for( Plan c : _childs ){
sb.append(c._ID);
sb.append(",");
}
sb.setLength(sb.length()-1);
sb.append("},");
sb.append(_costs);
sb.append("]");
return sb.toString();
}
}