ncint_pio.c File Reference

#include "config.h"
#include <stdlib.h>
#include <pio_internal.h>
#include "ncintdispatch.h"

Include dependency graph for ncint_pio.c:

Functions
int	nc_def_iosystem (MPI_Comm comp_comm, int num_iotasks, int stride, int base, int rearr, int *iosysidp)
	Same as PIOc_Init_Intracomm(). More...
int	nc_def_async (MPI_Comm world, int num_io_procs, int *io_proc_list, int component_count, int *num_procs_per_comp, int **proc_list, MPI_Comm *io_comm, MPI_Comm *comp_comm, int rearranger, int *iosysidp)
	Same as PIOc_init_async(). More...
int	nc_set_iosystem (int iosysid)
	Set the default iosystemID. More...
int	nc_get_iosystem (int *iosysid)
	Get the default iosystemID. More...
int	nc_free_iosystem (int iosysid)
	Same as PIOc_free_iosystem(). More...
int	nc_def_decomp (int iosysid, int pio_type, int ndims, const int *gdimlen, int maplen, const size_t *compmap, int *ioidp, int rearranger, const size_t *iostart, const size_t *iocount)
	Same as PIOc_init_decomp(). More...
int	nc_free_decomp (int ioid)
	Same as PIOc_freedecomp(). More...

Variables
int	diosysid
	This is te default io system id.

Function Documentation

nc_def_async()

int nc_def_async	(	MPI_Comm	world,
		int	num_io_procs,
		int *	io_proc_list,
		int	component_count,
		int *	num_procs_per_comp,
		int **	proc_list,
		MPI_Comm *	io_comm,
		MPI_Comm *	comp_comm,
		int	rearranger,
		int *	iosysidp
	)

Same as PIOc_init_async().

Parameters

world	the communicator containing all the available tasks.
num_io_procs	the number of processes for the IO component.
io_proc_list	an array of lenth num_io_procs with the processor number for each IO processor. If NULL then the IO processes are assigned starting at processes 0.
component_count	number of computational components
num_procs_per_comp	an array of int, of length component_count, with the number of processors in each computation component.
proc_list	an array of arrays containing the processor numbers for each computation component. If NULL then the computation components are assigned processors sequentially starting with processor num_io_procs.
io_comm	pointer to an MPI_Comm. If not NULL, it will get an MPI duplicate of the IO communicator. (It is a full duplicate and later must be freed with MPI_Free() by the caller.)
comp_comm	pointer to an array of pointers to MPI_Comm; the array is of length component_count. If not NULL, it will get an MPI duplicate of each computation communicator. (These are full duplicates and each must later be freed with MPI_Free() by the caller.)
rearranger	the default rearranger to use for decompositions in this IO system. Only PIO_REARR_BOX is supported for async. Support for PIO_REARR_SUBSET will be provided in a future version.
iosysidp	pointer to array of length component_count that gets the iosysid for each component.

Returns

PIO_NOERR on success, error code otherwise.

Author

Ed Hartnett

nc_def_decomp()

int nc_def_decomp	(	int	iosysid,
		int	pio_type,
		int	ndims,
		const int *	gdimlen,
		int	maplen,
		const size_t *	compmap,
		int *	ioidp,
		int	rearranger,
		const size_t *	iostart,
		const size_t *	iocount
	)

Same as PIOc_init_decomp().

Author

Ed Hartnett

nc_def_iosystem()

int nc_def_iosystem	(	MPI_Comm	comp_comm,
		int	num_iotasks,
		int	stride,
		int	base,
		int	rearr,
		int *	iosysidp
	)

Same as PIOc_Init_Intracomm().

Author

Ed Hartnett

nc_free_decomp()

int nc_free_decomp

(

int

ioid

)

Same as PIOc_freedecomp().

Author

Ed Hartnett

nc_free_iosystem()

int nc_free_iosystem

(

int

iosysid

)

Same as PIOc_free_iosystem().

Author

Ed Hartnett

nc_get_iosystem()

int nc_get_iosystem

(

int *

iosysid

)

Get the default iosystemID.

Parameters

iosysid

Pointer that gets The IO system ID.

Returns

PIO_NOERR for success.

Author

Ed Hartnett

nc_set_iosystem()

int nc_set_iosystem

(

int

iosysid

)

Set the default iosystemID.

Parameters

iosysid

The IO system ID to set.

Returns

PIO_NOERR for success.

Author

Ed Hartnett