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

Class JCudaContext

java.lang.Object

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

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

public class JCudaContext
extends GPUContext

Setup: 1. Install CUDA 7.5 2. Install CuDNN v4 from http://developer.download.nvidia.com/compute/redist/cudnn/v4/cudnn-7.0-win-x64-v4.0-prod.zip 3. Download JCuda binaries version 0.7.5b and JCudnn version 0.7.5. Copy the DLLs into C:\lib (or /lib) directory. Link: http://www.jcuda.org/downloads/downloads.html

Field Summary

Fields

Modifier and Type	Field and Description
static AtomicLong	availableNumBytesWithoutUtilFactor
static boolean	DEBUG
double	GPU_MEMORY_UTILIZATION_FACTOR
boolean	REFRESH_AVAILABLE_MEMORY_EVERY_TIME
static long	totalNumBytes

Fields inherited from class org.apache.sysml.runtime.instructions.gpu.context.GPUContext

allocatedPointers, currContext, isGPUContextCreated

Constructor Summary

Constructors

Constructor and Description
JCudaContext()

Method Summary

Modifier and Type	Method and Description
void	destroy()
void	ensureComputeCapability() Ensures that all the CUDA cards on the current system are of the minimum required compute capability.
long	getAvailableMemory() Gets device memory available for SystemML operations

Methods inherited from class org.apache.sysml.runtime.instructions.gpu.context.GPUContext

createGPUContext, createGPUObject

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

public static boolean DEBUG

totalNumBytes

public static long totalNumBytes

availableNumBytesWithoutUtilFactor

public static AtomicLong availableNumBytesWithoutUtilFactor

REFRESH_AVAILABLE_MEMORY_EVERY_TIME

public boolean REFRESH_AVAILABLE_MEMORY_EVERY_TIME

GPU_MEMORY_UTILIZATION_FACTOR

public double GPU_MEMORY_UTILIZATION_FACTOR

Constructor Detail

JCudaContext

public JCudaContext()
             throws DMLRuntimeException

Throws:

DMLRuntimeException

Method Detail

getAvailableMemory

public long getAvailableMemory()

Description copied from class: GPUContext

Gets device memory available for SystemML operations

Specified by:

getAvailableMemory in class GPUContext

Returns:

available memory

ensureComputeCapability

public void ensureComputeCapability()
                             throws DMLRuntimeException

Description copied from class: GPUContext

Ensures that all the CUDA cards on the current system are of the minimum required compute capability. (The minimum required compute capability is hard coded in JCudaContext.

Specified by:

ensureComputeCapability in class GPUContext

Throws:

DMLRuntimeException - if DMLRuntimeException occurs

destroy

public void destroy()
             throws DMLRuntimeException

Specified by:

destroy in class GPUContext

Throws:

DMLRuntimeException