org.apache.sysml.runtime.instructions.gpu.context

Class ShadowBuffer

java.lang.Object

org.apache.sysml.runtime.instructions.gpu.context.ShadowBuffer

public class ShadowBuffer
extends Object

Constructor Summary

Constructors

Constructor and Description
ShadowBuffer(GPUObject gpuObj)

Method Summary

Modifier and Type	Method and Description
void	clearShadowPointer() Removes the content from shadow buffer
boolean	isBuffered() Check if the gpu object is shadow buffered
boolean	isEligibleForBuffering(boolean isEviction, boolean eagerDelete) Checks if the GPU object is eligible for shadow buffering
void	moveFromDevice(String instName) Move the data from GPU to shadow buffer
void	moveToDevice() Move the data from shadow buffer to GPU
void	moveToHost() Move the data from shadow buffer to Matrix object

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ShadowBuffer

public ShadowBuffer(GPUObject gpuObj)

Method Detail

isBuffered

public boolean isBuffered()

Check if the gpu object is shadow buffered

Returns:

true if the gpu object is shadow buffered

moveFromDevice

public void moveFromDevice(String instName)

Move the data from GPU to shadow buffer

Parameters:

instName - name of the instruction

moveToHost

public void moveToHost()

Move the data from shadow buffer to Matrix object

moveToDevice

public void moveToDevice()

Move the data from shadow buffer to GPU

isEligibleForBuffering

public boolean isEligibleForBuffering(boolean isEviction,
                                      boolean eagerDelete)

Checks if the GPU object is eligible for shadow buffering

Parameters:

isEviction - true if this method is called during eviction

eagerDelete - true if the data on device has to be eagerly deleted

Returns:

true if the given GPU object is eligible to be shadow buffered

clearShadowPointer

public void clearShadowPointer()

Removes the content from shadow buffer