piolib_mod.f90 File Reference

Functions/Subroutines
logical function, public	piolib_mod::pio_file_is_open (File)
	Get the local size of a distributed array. More...
integer function, public	piolib_mod::pio_get_local_array_size (iodesc)
	IO descriptor structure. More...
subroutine	piolib_mod::advanceframe (file, vardesc)
	File descriptor structure. More...
subroutine	piolib_mod::setframe (file, vardesc, frame)
	File descriptor structure. More...
subroutine	piolib_mod::setdebuglevel (level)
subroutine	piolib_mod::seterrorhandlingfile (file, method, oldmethod)
	File descriptor structure. More...
subroutine	piolib_mod::seterrorhandlingiosystem (iosystem, method, oldmethod)
	The error handling setting controls what happens if errors are encountered by PIO. The three types of error handling methods are: More...
subroutine	piolib_mod::seterrorhandlingiosysid (iosysid, method, oldmethod)
	The error handling setting controls what happens if errors are encountered by PIO. The three types of error handling methods are: More...
subroutine	piolib_mod::pio_initdecomp_bc (iosystem, basepiotype, dims, compstart, compcount, iodesc)
	IO system descriptor structure. More...
subroutine	piolib_mod::initdecomp_1dof_bin_i8 (iosystem, basepiotype, dims, lenblocks, compdof, iodofr, iodesc)
	PIO supports different kinds of Fortran types. More...
subroutine	piolib_mod::initdecomp_1dof_bin_i4 (iosystem, basepiotype, dims, lenblocks, compdof, iodofr, iodesc)
	PIO supports different kinds of Fortran types. More...
subroutine	piolib_mod::initdecomp_2dof_nf_i4 (iosystem, basepiotype, dims, lenblocks, compdof, iodofr, iodofw, start, count, iodesc)
	PIO supports different kinds of Fortran types. More...
subroutine	piolib_mod::initdecomp_2dof_nf_i8 (iosystem, basepiotype, dims, lenblocks, compdof, iodofr, iodofw, start, count, iodesc)
	PIO supports different kinds of Fortran types. More...
subroutine	piolib_mod::initdecomp_1dof_nf_i4 (iosystem, basepiotype, dims, lenblocks, compdof, iodof, start, count, iodesc)
	PIO supports different kinds of Fortran types. More...
subroutine	piolib_mod::initdecomp_1dof_nf_i8 (iosystem, basepiotype, dims, lenblocks, compdof, iodof, start, count, iodesc)
	PIO supports different kinds of Fortran types. More...
subroutine	piolib_mod::pio_initdecomp_dof_i4 (iosystem, basepiotype, dims, compdof, iodesc, rearr, iostart, iocount)
	IO system descriptor structure. More...
subroutine	piolib_mod::pio_initdecomp_dof_i8 (iosystem, basepiotype, dims, compdof, iodesc, rearr, iostart, iocount)
subroutine	piolib_mod::init_intracom (comp_rank, comp_comm, num_iotasks, num_aggregator, stride, rearr, iosystem, base, rearr_opts)
	Rearranger methods. More...
subroutine	piolib_mod::init_intercom (iosystem, incomm, procs_per_component, comp_proc_list, io_proc_list, rearranger, comp_comm, io_comm)
subroutine	piolib_mod::init_intercom_from_comms (iosystem, world_comm, comp_comms, io_comm, rearranger)
subroutine, public	piolib_mod::pio_set_hint (iosystem, hint, hintval)
	IO descriptor structure. More...
subroutine	piolib_mod::finalize (iosystem, ierr)
	IO descriptor structure. More...
subroutine	piolib_mod::getnumiotasks (iosystem, numiotasks)
logical function, public	piolib_mod::pio_iotype_available (iotype)
	Is an iotype available?
integer function	piolib_mod::createfile (iosystem, file, iotype, fname, amode_in)
	An integer parameter which controls the iotype. More...
integer function, public	piolib_mod::pio_openfile (iosystem, file, iotype, fname, mode)
	The error return code (see Error Handling for Fortran). More...
subroutine	piolib_mod::syncfile (file)
	File descriptor structure. More...
subroutine	piolib_mod::freedecomp_ios (ios, iodesc)
	free all allocated storage associated with this decomposition More...
subroutine	piolib_mod::freedecomp_file (file, iodesc)
	File descriptor structure. More...
subroutine	piolib_mod::closefile (file)
	File descriptor structure. More...
subroutine, public	piolib_mod::pio_deletefile (ios, fname)
integer function, public	piolib_mod::pio_set_rearr_opts (ios, comm_type, fcd, enable_hs_c2i, enable_isend_c2i, max_pend_req_c2i, enable_hs_i2c, enable_isend_i2c, max_pend_req_i2c)
	There are two choices for rearranger communication. More...

Detailed Description

Initialization Routines for PIO.

Function/Subroutine Documentation

pio_deletefile()

subroutine, public piolib_mod::pio_deletefile	(	type(iosystem_desc_t)	ios,
		character(len=*)	fname
	)

Delete a file.

Parameters

ios	a pio system handle
fname	a filename

Author

Jim Edwards

pio_file_is_open()

logical function, public piolib_mod::pio_file_is_open

(

type(file_desc_t), intent(in)

File

)

Get the local size of a distributed array.

This logical function indicates if a file is open.

Parameters

File	File descriptor structure. This structure holds information associated with each open file

Author

Jim Edwards

pio_set_rearr_opts()

integer function, public piolib_mod::pio_set_rearr_opts	(	type(iosystem_desc_t), intent(inout)	ios,
		integer, intent(in)	comm_type,
		integer, intent(in)	fcd,
		logical, intent(in)	enable_hs_c2i,
		logical, intent(in)	enable_isend_c2i,
		integer, intent(in)	max_pend_req_c2i,
		logical, intent(in)	enable_hs_i2c,
		logical, intent(in)	enable_isend_i2c,
		integer, intent(in)	max_pend_req_i2c
	)

There are two choices for rearranger communication.

Set the rerranger options.

Parameters

ios	handle to pio iosystem
comm_type	- PIO_rearr_comm_p2p : Point to point PIO_rearr_comm_coll : Collective
fcd	: There are four choices for rearranger communication direction. PIO_rearr_comm_fc_2d_enable : COMM procs to IO procs and vice versa

• PIO_rearr_comm_fc_1d_comp2io: COMM procs to IO procs only
• PIO_rearr_comm_fc_1d_io2comp: IO procs to COMM procs only
• PIO_rearr_comm_fc_2d_disable: Disable flow control

  Parameters

  enable_hs_c2i	Enable handshake (compute procs to io procs)
  enable_isend_c2i	Enable isends (compute procs to io procs)
  max_pend_req_c2i	Maximum pending requests (compute procs to io procs)
  enable_hs_i2c	Enable handshake (io procs to compute procs)
  enable_isend_i2c	Enable isends (io procs to compute procs)
  max_pend_req_i2c	Maximum pending requests (io procs to compute procs)

  Type that defines the PIO rearranger options.
  • enable_hs : Enable handshake (true/false)
• enable_isend : Enable Isends (true/false)
• max_pend_req : Maximum pending requests (To indicated unlimited number of requests use PIO_REARR_COMM_UNLIMITED_PEND_REQ)

  Author

  Jim Edwards