IO system descriptor structure. More...

#include <pio.h>

Public Attributes
int	iosysid
	The ID of this iosystem_desc_t. More...

MPI_Comm	union_comm
	This is an MPI intra communicator that includes all the tasks in both the IO and the computation communicators. More...

MPI_Comm	io_comm
	This is an MPI intra communicator that includes all the tasks involved in IO. More...

MPI_Comm	comp_comm
	This is an MPI intra communicator that includes all the tasks involved in computation. More...

MPI_Comm	intercomm
	This is an MPI inter communicator between IO communicator and computation communicator. More...

MPI_Comm	my_comm
	This is a copy (but not an MPI copy) of either the comp (for non-async) or the union (for async) communicator. More...

MPI_Group	compgroup
	This MPI group contains the processors involved in computation. More...

MPI_Group	iogroup
	This MPI group contains the processors involved in I/O. More...

int	num_iotasks
	The number of tasks in the IO communicator. More...

int	num_comptasks
	The number of tasks in the computation communicator. More...

int	union_rank
	Rank of this task in the union communicator. More...

int	comp_rank
	The rank of this process in the computation communicator, or -1 if this process is not part of the computation communicator. More...

int	io_rank
	The rank of this process in the IO communicator, or -1 if this process is not part of the IO communicator. More...

int	iomaster
	Set to MPI_ROOT if this task is the master of IO communicator, 0 otherwise. More...

int	compmaster
	Set to MPI_ROOT if this task is the master of comp communicator, 0 otherwise. More...

int	ioroot
	Rank of IO root task (which is rank 0 in io_comm) in the union communicator. More...

int	comproot
	Rank of computation root task (which is rank 0 in comm_comms[cmp]) in the union communicator. More...

int *	ioranks
	An array of the ranks of all IO tasks within the union communicator. More...

int	error_handler
	Controls handling errors. More...

int	default_rearranger
	The rearranger decides which parts of a distributed array are handled by which IO tasks. More...

bool	async_interface
	True if asynchronous interface is in use. More...

bool	ioproc
	True if this task is a member of the IO communicator. More...

MPI_Info	info
	MPI Info object. More...

int	comp_idx
	Index of this component in the list of components. More...

struct iosystem_desc_t *	next
	Pointer to the next iosystem_desc_t in the list. More...

Detailed Description

IO system descriptor structure.

This structure contains the general IO subsystem data and MPI structure

Member Data Documentation

§ async_interface

bool iosystem_desc_t::async_interface

True if asynchronous interface is in use.

§ comp_comm

MPI_Comm iosystem_desc_t::comp_comm

This is an MPI intra communicator that includes all the tasks involved in computation.

§ comp_idx

int iosystem_desc_t::comp_idx

Index of this component in the list of components.

§ comp_rank

int iosystem_desc_t::comp_rank

The rank of this process in the computation communicator, or -1 if this process is not part of the computation communicator.

§ compgroup

MPI_Group iosystem_desc_t::compgroup

This MPI group contains the processors involved in computation.

§ compmaster

int iosystem_desc_t::compmaster

Set to MPI_ROOT if this task is the master of comp communicator, 0 otherwise.

§ comproot

int iosystem_desc_t::comproot

Rank of computation root task (which is rank 0 in comm_comms[cmp]) in the union communicator.

Will always = number of IO tasks in async situations.

§ default_rearranger

int iosystem_desc_t::default_rearranger

The rearranger decides which parts of a distributed array are handled by which IO tasks.

§ error_handler

int iosystem_desc_t::error_handler

Controls handling errors.

§ info

MPI_Info iosystem_desc_t::info

MPI Info object.

§ intercomm

MPI_Comm iosystem_desc_t::intercomm

This is an MPI inter communicator between IO communicator and computation communicator.

§ io_comm

MPI_Comm iosystem_desc_t::io_comm

This is an MPI intra communicator that includes all the tasks involved in IO.

§ io_rank

int iosystem_desc_t::io_rank

The rank of this process in the IO communicator, or -1 if this process is not part of the IO communicator.

§ iogroup

MPI_Group iosystem_desc_t::iogroup

This MPI group contains the processors involved in I/O.

§ iomaster

int iosystem_desc_t::iomaster

Set to MPI_ROOT if this task is the master of IO communicator, 0 otherwise.

§ ioproc

bool iosystem_desc_t::ioproc

True if this task is a member of the IO communicator.

§ ioranks

int* iosystem_desc_t::ioranks

An array of the ranks of all IO tasks within the union communicator.

§ ioroot

int iosystem_desc_t::ioroot

Rank of IO root task (which is rank 0 in io_comm) in the union communicator.

Will always be 0 for async situations.

§ iosysid

int iosystem_desc_t::iosysid

The ID of this iosystem_desc_t.

This will be obtained by calling PIOc_Init_Intercomm() or PIOc_Init_Intracomm().

§ my_comm

MPI_Comm iosystem_desc_t::my_comm

This is a copy (but not an MPI copy) of either the comp (for non-async) or the union (for async) communicator.

§ next

struct iosystem_desc_t* iosystem_desc_t::next

Pointer to the next iosystem_desc_t in the list.

§ num_comptasks

int iosystem_desc_t::num_comptasks

The number of tasks in the computation communicator.

§ num_iotasks

int iosystem_desc_t::num_iotasks

The number of tasks in the IO communicator.

§ union_comm

MPI_Comm iosystem_desc_t::union_comm

This is an MPI intra communicator that includes all the tasks in both the IO and the computation communicators.

§ union_rank

int iosystem_desc_t::union_rank

Rank of this task in the union communicator.

The documentation for this struct was generated from the following file:

src/clib/pio.h

Public Attributes