src/main/java/org/apache/sysds/runtime/controlprogram/parfor/TaskPartitionerStatic.java

/*
 * 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;

import org.apache.sysds.runtime.instructions.cp.IntObject;

/**
 * This static task partitioner virtually iterates over the given FOR loop (from, to, incr),
 * creates iterations and group them to tasks according to a task size of numIterations/numWorkers. 
 * There, all tasks are equally sized.
 * 
 */
public class TaskPartitionerStatic extends TaskPartitionerFixedsize
{
	
	public TaskPartitionerStatic( long taskSize, int numThreads, String iterVarName, IntObject fromVal, IntObject toVal, IntObject incrVal ) 
	{
		super(taskSize, iterVarName, fromVal, toVal, incrVal);
	
		_taskSize = _numIter / numThreads;
		_firstnPlus1 = (int)_numIter % numThreads;
	}	
}