.pbd_env

These variables provide default values for most functions in the package.

global variables

SPMD Control

A simplified, efficient, interface to MPI for HPC clusters. It is
a derivation and rethinking of the Rmpi package. pbdMPI embraces the
prevalent parallel programming style on HPC clusters. Beyond the
interface, a collection of functions for global work with
distributed data and resource-independent RNG reproducibility is
included. It is based on S4 classes and methods.

Wei-Chen Chen

pbdMPI

R Interface to MPI for HPC Clusters (Programming with Big Data
Project)

George Ostrouchov

Drew Schmidt

Pragneshkumar Patel

Hao Yu

Christian Heckendorf

Brian Ripley

R Core team 

Sebastien Lamy de la Chapelle

SPMD Control function

The environment <code>.pbd_env</code> contains several objects with parameters for
 communicators and methods.

Format

Wei-Chen Chen <a href="/link/wccsnow%40gmail.com?package=pbdMPI&version=0.5-1" data-mini-rdoc="pbdMPI::wccsnow@gmail.com">wccsnow@gmail.com</a>, George Ostrouchov,
 Drew Schmidt, Pragneshkumar Patel, and Hao Yu.

Author

Default control in pbdMPI. — SPMD Control

Wei-Chen Chen <a href='mailto:wccsnow@gmail.com'>wccsnow@gmail.com</a>, George Ostrouchov,
 Drew Schmidt, Pragneshkumar Patel, and Hao Yu.

Elements	Default	Meaning
`comm`	0L	communicator index
`intercomm`	2L	inter communicator index
`info`	0L	info index
`newcomm`	1L	new communicator index
`op`	"sum"	the operation
`port.name`	"spmdport"	the operation
`print.all.rank`	FALSE	whether all ranks print message
`print.quiet`	FALSE	whether rank is added to print/cat
`rank.root`	0L	the rank of root
`rank.source`	0L	the rank of source
`rank.dest`	1L	the rank of destination
`request`	0L	the request index
`serv.name`	"spmdserv"	the service name
`status`	0L	the status index
`tag`	0L	the tag number
`unlist`	FALSE	whether to unlist a return
`divide.method`	"block"	default method for jid
`mpi.finalize`	TRUE	shutdown MPI on `finalize()`
`quit`	TRUE	quit when errors occur
`msg.flush`	TRUE	flush each comm.cat/comm.print
`msg.barrier`	TRUE	include barrier in comm.cat/comm.print
`Rprof.all.rank`	FALSE	call Rprof on all ranks
`lazy.check`	TRUE	use lazy check on all ranks

Elements	Default	Meaning
`max.read.size`	5.2e6	max of reading size (5 MB)
`max.test.lines`	500	max of testing lines
`read.method`	"gbd"	default reading method
`balance.method`	"block"	default load balance method

Elements	Default	Meaning
`bcast`	FALSE	whether to `bcast()` objects to all ranks
`barrier`	TRUE	if call `barrier()` for all ranks
`try`	TRUE	if use `try()` in works
`try.silent`	FALSE	if silent the `try()` message

SPMD Control: Default control in pbdMPI.

Description

Arguments

Format

Author

Details

References