ShadowBuffer (Apache SystemDS 3.0.0 API)

java.lang.Object
- org.apache.sysds.runtime.instructions.gpu.context.ShadowBuffer

public class ShadowBuffer
extends Object

Constructor Summary

Constructors
Constructor Description

ShadowBuffer(GPUObject gpuObj)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	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
equals, 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