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GA Class Reference

#include <ga++.h>

Collaboration diagram for GA:

[legend]List of all members.

Public Methods
_GA_STATIC_ void	Initialize (int argc, char *argv[], size_t limit=0)
	Initialize Global Arrays. More...
_GA_STATIC_ void	Initialize (int argc, char *argv[], unsigned long heapSize, unsigned long stackSize, int type, size_t limit=0)
	Initialize Global Arrays. More...
_GA_STATIC_ void	Terminate ()
	Delete all active arrays and destroy internal data structures. More...
Public Attributes
_GA_EXTERN_ _GA_STATIC_ GAServices	SERVICES = GA::GAServices()
Private Methods
	GA ()

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Constructor & Destructor Documentation

GA::GA (    )  [inline, private]

Definition at line 1880 of file ga++.h.

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Member Function Documentation

void GA::Initialize (  int    argc, char *    argv[], size_t    limit = 0 )

Initialize Global Arrays. Allocate and initialize internal data structures in Global Arrays. The limit is per process: it is the amount of memory that the given processor can contribute to collective allocation of global arrays. It does not include temporary storage that GA might be allocating (and releasing) during execution of a particular operation. limit < 0 means "allow unlimited memory usage" in which case this operation is equivalent to GA_initialize. Parameters: argc,argv  - command line argument lists. limit  - amount of memory in bytes per process [input] This is a collective operation. Definition at line 5 of file init_term.cc. { int val; #ifndef MPIPP PBEGIN_(argc, argv); #else if((val=MPI_Init(&argc, &argv)) < 0) fprintf(stderr, "MPI_Init() failed\n"); #endif // GA Initialization if(limit == 0) GA_Initialize(); else GA_Initialize_ltd(limit); }

void GA::Initialize (  int    argc, char *    argv[], unsigned long    heapSize, unsigned long    stackSize, int    type, size_t    limit = 0 )

Initialize Global Arrays. Allocate and initialize internal data structures in Global Arrays. The limit is per process: it is the amount of memory that the given processor can contribute to collective allocation of global arrays. It does not include temporary storage that GA might be allocating (and releasing) during execution of a particular operation. limit < 0 means "allow unlimited memory usage" in which case this operation is equivalent to GA_initialize. Parameters: argc,argv  - command line argument lists. limit  - amount of memory in bytes per process [input] heapSize, stackSize  - all of the dynamically allocated local memory type  - data type. in GA comes from its companion library, the Memory Allocator (MA) library. MA allocates and manages local memory using stack and heap disciplines. [refer section 3.2 of GA USer manual for more info] This is a collective operation. Definition at line 24 of file init_term.cc. { int val; // Initialize MPI/TCGMSG #ifndef MPIPP PBEGIN_(argc, argv); #else if((val=MPI_Init(&argc, &argv)) < 0) fprintf(stderr, "MPI_Init() failed\n"); #endif // GA Initialization if(limit == 0) GA_Initialize(); else GA_Initialize_ltd(limit); //if(GA_Uses_ma()) { int nProcs = GA_Nnodes(); // Initialize memory allocator heapSize /= ((unsigned long) nProcs); stackSize /= ((unsigned long) nProcs); if(!MA_init(type, stackSize, heapSize)) GA_Error("MA_init failed",stackSize+heapSize); // } }

void GA::Terminate (    )

Delete all active arrays and destroy internal data structures. This is a collective operation. Definition at line 59 of file init_term.cc. { /* Terminate GA */ GA_Terminate(); #ifndef MPIPP PEND_(); #else MPI_Finalize(); #endif }

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Member Data Documentation

GA::GAServices GA::SERVICES = GA::GAServices()

Definition at line 72 of file init_term.cc.

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The documentation for this class was generated from the following files:

• ga++.h
• init_term.cc

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