org.apache.sysds.lops

Class AppendG

java.lang.Object

org.apache.sysds.lops.Lop

org.apache.sysds.lops.AppendG

public class AppendG
extends Lop

TODO Additional compiler enhancements: 1) Partial Shuffle Elimination - Any full or aligned blocks could be directly output from the mappers to the result index. We only need to shuffle, sort and aggregate partial blocks. However, this requires piggybacking changes, i.e., (1) operations with multiple result indexes, and (2) multiple operations with the same result index. 2) Group Elimination for Append Chains - If we have chains of rappend each intermediate is shuffled and aggregated. This is unnecessary if all offsets are known in advance. We could directly pack all rappends in one GMR map-phase followed by one group and subsequent aggregate. However, this requires an n-ary rappend or group (with multiple inputs).

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.sysds.lops.Lop

Lop.SimpleInstType, Lop.Type, Lop.VisitStatus

Field Summary

Fields

Modifier and Type	Field and Description
static String	OPCODE

Fields inherited from class org.apache.sysds.lops.Lop

_beginColumn, _beginLine, _endColumn, _endLine, _filename, CP_CHILD_THREAD, CP_ROOT_THREAD_ID, DATATYPE_PREFIX, FILE_SEPARATOR, FRAME_VAR_NAME_PREFIX, INSTRUCTION_DELIMITOR, LITERAL_PREFIX, MATRIX_VAR_NAME_PREFIX, NAME_VALUE_SEPARATOR, OPERAND_DELIMITOR, PROCESS_PREFIX, SAMPLE_FRACTION, SCALAR_VAR_NAME_PREFIX, UPDATE_INPLACE_PREFIX, VALUETYPE_PREFIX, VARIABLE_NAME_PLACEHOLDER

Constructor Summary

Constructors

Constructor and Description
AppendG(Lop input1, Lop input2, Lop input3, Lop input4, Types.DataType dt, Types.ValueType vt, boolean cbind, LopProperties.ExecType et)

Method Summary

Modifier and Type	Method and Description
String	getInstructions(String input_index1, String input_index2, String input_index3, String input_index4, String output_index) Method should be overridden if needed
void	init(Lop input1, Lop input2, Lop input3, Lop input4, Types.DataType dt, Types.ValueType vt, LopProperties.ExecType et)
String	toString() Method to have Lops print their state.

Methods inherited from class org.apache.sysds.lops.Lop

addInput, addOutput, addToDag, createReachable, getBeginColumn, getBeginLine, getDataType, getEndColumn, getEndLine, getExecType, getFilename, getID, getInputs, getInstructions, getInstructions, getInstructions, getInstructions, getInstructions, getInstructions, getInstructions, getInstructions, getInstructions, getInstructions, getInstructions, getLevel, getOutputParameters, getOutputs, getPrivacyConstraint, getProducesIntermediateOutput, getReachable, getSimpleInstructionType, getType, getValueType, getVisited, isDataExecLocation, isVariable, prepInputOperand, prepInputOperand, prepOperand, prepOperand, prepOutputOperand, prepOutputOperand, prepOutputOperand, prepScalarInputOperand, prepScalarInputOperand, prepScalarLabel, prepScalarOperand, printErrorLocation, removeConsumer, resetVisitStatus, setAllPositions, setBeginColumn, setBeginLine, setConsumerCount, setDataType, setEndColumn, setEndLine, setFilename, setPrivacyConstraint, setValueType, setVisited

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

OPCODE

public static final String OPCODE

See Also:

Constant Field Values

Constructor Detail

AppendG

public AppendG(Lop input1,
               Lop input2,
               Lop input3,
               Lop input4,
               Types.DataType dt,
               Types.ValueType vt,
               boolean cbind,
               LopProperties.ExecType et)

Method Detail

init

public void init(Lop input1,
                 Lop input2,
                 Lop input3,
                 Lop input4,
                 Types.DataType dt,
                 Types.ValueType vt,
                 LopProperties.ExecType et)

toString

public String toString()

Description copied from class: Lop

Method to have Lops print their state. This is for debugging purposes.

Specified by:

toString in class Lop

getInstructions

public String getInstructions(String input_index1,
                              String input_index2,
                              String input_index3,
                              String input_index4,
                              String output_index)

Description copied from class: Lop

Method should be overridden if needed

Overrides:

getInstructions in class Lop

Parameters:

input_index1 - input 1

input_index2 - input 2

input_index3 - input 3

input_index4 - input 4

output_index - output

Returns:

instructions as string