com.cmpware.cmp.system.memory
Class Torus

java.lang.Object
  com.cmpware.cmp.SystemMemory
      com.cmpware.cmp.system.memory.Torus

public class Torus
extends SystemMemory

This implements a 2D Torus (a 2D grid with the ends connected around -- a dougnhut) shared memory configuration. Neighboring processors share a small block of memory in a toroidal topology.

Copyright (c) 2004, 2005 Cmpware, Inc. All Rights Reserved.

Author:

SAG

Field Summary

static java.lang.String	copyright Copyright string
static int	EAST The start address of the 'east' shared memory bank
static int	LOCAL_MEMORY_SIZE The size of the local memory (in bytes)
static int	NORTH The start address of the 'north' shared memory bank
static int	SHARED_MEMORY_SIZE The size of the shared memories (in bytes)
static int	SOUTH The start address of the 'south' shared memory bank
static int	WEST The start address of the 'west' shared memory bank

Constructor Summary

Torus()

Method Summary

void	configureMemory(Multiprocessor mp) This method is called to build and configure the memory system for the newly allocated processor array.

Methods inherited from class com.cmpware.cmp.SystemMemory

get

Methods inherited from class java.lang.Object

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

Field Detail

copyright

public static final java.lang.String copyright

Copyright string

See Also:

Constant Field Values

LOCAL_MEMORY_SIZE

public static int LOCAL_MEMORY_SIZE

The size of the local memory (in bytes)

SHARED_MEMORY_SIZE

public static int SHARED_MEMORY_SIZE

The size of the shared memories (in bytes)

NORTH

public static int NORTH

The start address of the 'north' shared memory bank

EAST

public static int EAST

The start address of the 'east' shared memory bank

SOUTH

public static int SOUTH

The start address of the 'south' shared memory bank

WEST

public static int WEST

The start address of the 'west' shared memory bank

Constructor Detail

Torus

public Torus()

Method Detail

configureMemory

public void configureMemory(Multiprocessor mp)
                     throws SystemMemoryException

Description copied from class: SystemMemory

This method is called to build and configure the memory system for the newly allocated processor array. In particular, shared memories should be allocated and connected to processors here. This method may also be used to adding additional banks of local memories or manipulating the default local memory, although this could also be done locally.

Specified by:

configureMemory in class SystemMemory

Parameters:

mp - The multiprocessor.

Throws:

SystemMemoryException - if there is a problem allocating or using the memory objects.