MPQC 2.3.1
|
This MemoryGrp class requires a MT-safe MPI implementation. More...
#include <memmtmpi.h>
Public Member Functions | |
MTMPIMemoryGrp (const Ref< MessageGrp > &msg, const Ref< ThreadGrp > &th, MPI_Comm comm=MPI_COMM_WORLD) | |
Construct a MTMPIMemoryGrp given a MessageGrp, ThreadGrp, and an MPI communicator. | |
MTMPIMemoryGrp (const Ref< KeyVal > &) | |
Construct a MTMPIMemoryGrp given a KeyVal input object. | |
void | activate () |
Activate is called before the memory is to be used. | |
void | deactivate () |
Deactivate is called after the memory has been used. | |
void | sync () |
Synchronizes all the nodes. | |
![]() | |
ActiveMsgMemoryGrp (const Ref< MessageGrp > &msg) | |
ActiveMsgMemoryGrp (const Ref< KeyVal > &) | |
void | set_localsize (size_t) |
Set the size of locally held memory. | |
void * | localdata () |
Returns a pointer to the local data. | |
void * | obtain_writeonly (distsize_t offset, int size) |
This gives write access to the memory location. No locking is done. | |
void * | obtain_readwrite (distsize_t offset, int size) |
Only one thread can have an unreleased obtain_readwrite at a time. | |
void * | obtain_readonly (distsize_t offset, int size) |
This gives read access to the memory location. No locking is done. | |
void | release_readonly (void *data, distsize_t offset, int size) |
This is called when read access is no longer needed. | |
void | release_writeonly (void *data, distsize_t offset, int size) |
This is called when write access is no longer needed. | |
void | release_readwrite (void *data, distsize_t offset, int size) |
This is called when read/write access is no longer needed. | |
void | sum_reduction (double *data, distsize_t doffset, int dsize) |
void | sum_reduction_on_node (double *data, size_t doffset, int dsize, int node=-1) |
void | print (std::ostream &o=ExEnv::out0()) const |
Prints out information about the object. | |
![]() | |
MsgMemoryGrp (const Ref< MessageGrp > &msg) | |
MsgMemoryGrp (const Ref< KeyVal > &keyval) | |
void | set_localsize (size_t localsize) |
Set the size of locally held memory. | |
void | sync () |
Synchronizes all the nodes. | |
![]() | |
MemoryGrp (const Ref< KeyVal > &) | |
int | me () const |
Returns who I am. | |
int | n () const |
Returns how many nodes there are. | |
virtual void | set_localsize (size_t)=0 |
Set the size of locally held memory. | |
size_t | localsize () |
Returns the amount of memory residing locally on me(). | |
virtual void * | localdata ()=0 |
Returns a pointer to the local data. | |
distsize_t | localoffset () |
Returns the global offset to this node's memory. | |
int | size (int node) |
Returns the amount of memory residing on node. | |
distsize_t | offset (int node) |
Returns the global offset to node's memory. | |
distsize_t | totalsize () |
Returns the sum of all memory allocated on all nodes. | |
virtual void | activate () |
Activate is called before the memory is to be used. | |
virtual void | deactivate () |
Deactivate is called after the memory has been used. | |
virtual void * | obtain_writeonly (distsize_t offset, int size)=0 |
This gives write access to the memory location. No locking is done. | |
virtual void * | obtain_readwrite (distsize_t offset, int size)=0 |
Only one thread can have an unreleased obtain_readwrite at a time. | |
virtual void * | obtain_readonly (distsize_t offset, int size)=0 |
This gives read access to the memory location. No locking is done. | |
virtual void | release_readonly (void *data, distsize_t offset, int size)=0 |
This is called when read access is no longer needed. | |
virtual void | release_writeonly (void *data, distsize_t offset, int size)=0 |
This is called when write access is no longer needed. | |
virtual void | release_readwrite (void *data, distsize_t offset, int size)=0 |
This is called when read/write access is no longer needed. | |
virtual void | sum_reduction (double *data, distsize_t doffset, int dsize) |
virtual void | sum_reduction_on_node (double *data, size_t doffset, int dsize, int node=-1) |
virtual void | sync ()=0 |
Synchronizes all the nodes. | |
virtual void * | malloc_local (size_t nbyte) |
Allocate data that will be accessed locally only. | |
virtual double * | malloc_local_double (size_t ndouble) |
virtual void | free_local (void *data) |
Free data that was allocated with malloc_local_double. | |
virtual void | free_local_double (double *data) |
virtual void | catchup () |
Processes outstanding requests. | |
virtual void | print (std::ostream &o=ExEnv::out0()) const |
Prints out information about the object. | |
![]() | |
DescribedClass (const DescribedClass &) | |
DescribedClass & | operator= (const DescribedClass &) |
ClassDesc * | class_desc () const throw () |
This returns the unique pointer to the ClassDesc corresponding to the given type_info object. | |
const char * | class_name () const |
Return the name of the object's exact type. | |
int | class_version () const |
Return the version of the class. | |
virtual void | print (std::ostream &=ExEnv::out0()) const |
Print the object. | |
![]() | |
int | lock_ptr () const |
Lock this object. | |
int | unlock_ptr () const |
Unlock this object. | |
void | use_locks (bool inVal) |
start and stop using locks on this object | |
refcount_t | nreference () const |
Return the reference count. | |
refcount_t | reference () |
Increment the reference count and return the new count. | |
refcount_t | dereference () |
Decrement the reference count and return the new count. | |
int | managed () const |
void | unmanage () |
Turn off the reference counting mechanism for this object. | |
int | managed () const |
Return 1 if the object is managed. Otherwise return 0. | |
![]() | |
Identifier | identifier () |
Return the Identifier for this argument. | |
Friends | |
class | MTMPIThread |
Additional Inherited Members | |
![]() | |
static MemoryGrp * | initial_memorygrp (int &argc, char **argv) |
Create a memory group. | |
static MemoryGrp * | initial_memorygrp () |
static void | set_default_memorygrp (const Ref< MemoryGrp > &) |
The default memory group contains the primary memory group to be used by an application. | |
static MemoryGrp * | get_default_memorygrp () |
Returns the default memory group. | |
virtual void | retrieve_data (void *, int node, int offset, int size, int lock)=0 |
virtual void | replace_data (void *, int node, int offset, int size, int unlock)=0 |
virtual void | sum_data (double *data, int node, int doffset, int dsize)=0 |
![]() | |
void | obtain_local_lock (size_t start, size_t fence) |
void | release_local_lock (size_t start, size_t fence) |
![]() | |
RefCount (const RefCount &) | |
RefCount & | operator= (const RefCount &) |
![]() | |
char * | data_ |
![]() | |
Ref< MessageGrp > | msg_ |
![]() | |
int | me_ |
int | n_ |
distsize_t * | offsets_ |
int | debug_ |
This MemoryGrp class requires a MT-safe MPI implementation.
The default MessageGrp must be a MPIMessageGrp. MPI must be safe with respect to the default ThreadGrp. Alternately, a MessageGrp and a ThreadGrp can be passed to the constructor.
sc::MTMPIMemoryGrp::MTMPIMemoryGrp | ( | const Ref< MessageGrp > & | msg, |
const Ref< ThreadGrp > & | th, | ||
MPI_Comm | comm = MPI_COMM_WORLD |
||
) |
Construct a MTMPIMemoryGrp given a MessageGrp, ThreadGrp, and an MPI communicator.
The communicator can be a subset of MPI_COMM_WORLD, in which case, the MessageGrp must refer to the same subset.
Construct a MTMPIMemoryGrp given a KeyVal input object.
A fully thread safe MPI is needed (MPI_THREAD_MULTIPLE).
|
virtual |
Activate is called before the memory is to be used.
Reimplemented from sc::MemoryGrp.
|
virtual |
Deactivate is called after the memory has been used.
Reimplemented from sc::MemoryGrp.
|
virtual |
Synchronizes all the nodes.
This is useful after remote memory writes to be certain that all of the writes have completed and the data can be accessed locally, for example.
Reimplemented from sc::MsgMemoryGrp.