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Topic: Message Passing Interface


Related Topics
PVM
MPI

In the News (Mon 30 Nov 09)

  
  Supercomputing and Parallel Computing Research Groups
Large-scale multiprocessor with shared memory and message passing.
Multiprocessor with distributed shared memory and message passing.
The interface between parallel hardware and parallel languages.
www.cs.cmu.edu /~scandal/research-groups.html   (752 words)

  
  Message Passing Interface - Wikipedia, the free encyclopedia
The Message Passing Interface (MPI) is a computer communications protocol.
It is a de facto standard for communication among the nodes running a parallel program on a distributed memory system.
MPI's advantage over older message passing libraries is that it is both portable (because MPI has been implemented for almost every distributed memory architecture) and fast (because each implementation is optimized for the hardware it runs on).
en.wikipedia.org /wiki/Message_Passing_Interface   (148 words)

  
 Message Passing Interface (MPI)
Message Passing Interface: A specification for message passing libraries, designed to be a standard for distributed memory, message passing, parallel computing.
The basic features essential to a standard message passing interface were discussed, and a working group established to continue the standardization process.
Receive a message and block until the requested data is available in the application buffer in the receiving task.
www.mhpcc.edu /training/workshop/mpi/MAIN.html   (6129 words)

  
 MPI: A Message Passing Interface
The main advantages of establishing a message passing interface for such machines are portability and ease-of-use, and a standard message passing interface is a key component in building a concurrent computing environment in which applications, software libraries, and tools can be transparently ported between different machines.
Communicator objects are passed to all point-to-point and collective communication routines to specify the context and the group, or groups, involved in the communication operation.
Thus, a send routine is passed a handle to a communicator object, the rank of the destination process, and the message type to fully specify the context and destination of a message.
www-fp.mcs.anl.gov /~lusk/papers/mpi-worksho/paper.html   (3707 words)

  
 Message Passing Interface (MPI) FAQ
As such the interface attempts to establish a practical, portable, efficient, and flexible standard for message passing.
Message Passing Interface Forum The Message Passing Interface Forum (MPIF), with participation from over 40 organizations, met from November 1992 to April 1994 to discuss and define a set of library interface standards for message passing.
At this workshop the basic features essential to a standard message passing interface were discussed, and a working group established to continue the standardization process.
www.faqs.org /faqs/mpi-faq   (2034 words)

  
 2 The Message Passing Interface (MPI)
The final specification of this interface was published in May 1994 and updated in June 1995 ([MPI95]); [GLS94] gives a good introduction from the application programmer's point of view.
Data types: in a message, MPI transmits objects of a specified datatype ranging from predefined elementary types to complicated, non-contiguous user-defined datatypes.
Messages must be sent and received within the same communicator, thus allowing to encapsulate the communication done by a parallel library from the application.
www.top500.org /reports/1995/vampir/node2.html   (577 words)

  
 Extreme Linux | Linux Magazine
The Message Passing Interface (MPI) has become the application programming interface (API) of choice for data exchange among processes in parallel scientific programs.
While Parallel Virtual Machine (PVM) is still a viable message passing system offering features not available in MPI, it's often not the first choice for developers seeking vendor-supported APIs based on open standards.
While often used in scientific models for shared memory parallelism on symmetric multi-processor (SMP) machines, OpenMP can also be used in conjunction with the Message Passing Interface (MPI) to provide a second level of parallelism for improved performance on Linux clusters having SMP compute nodes.
www.linux-mag.com /channel/extreme-linux   (1682 words)

  
 Message Passing Interface (MPI)
Note: This section can be skipped if the reader is already familiar with message passing concepts.
For reasons of efficiency, however, message passing systems generally associate only one process per processor.
Usually refers to a collection of routines which are imbedded in application code to accomplish send, receive and other message passing operations.
torvalds.cs.mtsu.edu /~rbutler/courses/pp6/www.llnl.gov/computing/tutorials/workshops/workshop/mpi/MAIN.html   (6211 words)

  
 SGI - Products: Software: Message Passing Toolkit
Many important scientific and engineering applications use message passing for their parallel implementations, since it delivers both portability and performance across a variety of computer architectures and systems.
Message-Passing Interface (MPI) was developed by a group of industry, academic, and government representatives with experience in developing and using message-passing libraries on a variety of computer systems.
MPI was developed to serve as a common standard, bringing together years of research and experience with message passing.
www.sgi.com /products/software/mpt   (876 words)

  
 Message Passing Interface   (Site not responding. Last check: )
OOMPI is an object-oriented interface to the MPI message passing library standard.
Different functional interfaces are provided for each of the phases of the solver and a simple interface is also provided for easy use.
The user can use these interfaces to solve multiple systems with same nonzero structures; to solve same system for multiple right hand sides; and to get different statistical information such as the memory requirements of the solver and the quality of the ordering.
www.mcs.anl.gov /Projects/mpi/libraries.html   (2126 words)

  
 The MPI Message Passing Interface Standard   (Site not responding. Last check: )
During 1993 and early 1994, a broadly-based group of parallel computer vendors, library writers, and application specialists met regularly to define a standard for message-passing libraries.
In this paper we explain a solution to this problem, which was adopted as part of the MPI Standard.
We then explain two ways to implement the specification, and illustrate the use of the MPI profiling interface with three profiling libraries that can be used with any conforming MPI implementation.
www-fp.mcs.anl.gov /~lusk/papers/knoxville/node2.html   (142 words)

  
 Message Passing Interface (MPI) FAQ
Message Passing Interface (MPI) FAQ Shane Hebert, shane@erc.msstate.edu Last modified: Tues Jan 13 13:58:32 1997 This is the list of Frequently Asked Questions about the MPI (Message Passing Interface) standard, a set of library functions for message passing.
WWW Sites Official Message Passing Interface (MPI) Homepage MPI-Forum.Org is the official homesite of the MPI Forum and contains official Forum documents and the MPI Standard documents in a variety of formats.
The text version is also available through anonymous ftp from and or those without FTP access can send e-mail to mail-server@rtfm.mit.edu with "send usenet/news.answers/mpi-faq" in the message body.
www.cs.uu.nl /wais/html/na-dir/mpi-faq.html   (2034 words)

  
 Message Passing Interface
The Message Passing Interface (MPI) is quickly gaining popularity in parallel computing.
It is a portable efficient standard for writing message passing parallel programs.
In other words, messages sent from different processors to the same process can not be expected to arrive in any specific order.
www-cse.ucsd.edu /users/berman/cse260/mpi.html   (811 words)

  
 1.8 Message-Passing Interface   (Site not responding. Last check: )
The paradigm we will use to express our algorithms is generally known as the Single Program-Multiple Data (SPMD)     paradigm: An identical program drives all nodes, but the path through the program is determined by the index of the node.
While we will rarely, if ever, expose message passing explicitly, we will heavily rely on a mechanism for describing the environment in which the communication occurs.
This interface is a recently adopted industry standard for message passing.
www.cs.utexas.edu /users/plapack/Guide/node23.html   (135 words)

  
 Message Passing Interface (MPI 1.8)
HP MPI is a high-performance implementation of the Message Passing Interface standard.
HP MPI provides an application programming interface and software libraries to support parallel, message-passing applications that are efficient, portable, and flexible.
Hyper Messaging Protocol (HMP) is a messaging-based protocol that significantly enhances performance of parallel and technical applications by optimizing the processing of various communication tasks.
docs.hp.com /en/5187-0701/ch07s14.html   (721 words)

  
 Message Passing Interface (MPI)   (Site not responding. Last check: )
A communication routine is nonblocking if the call returns without waiting for any communications events to complete (such as copying of message from user memory to system memory or arrival of message).
It is not safe to modify or use the application buffer after completion of a nonblocking send.
Arbitrary integer assigned by the programmer to uniquely identify a message.
www-ee.eng.hawaii.edu /~mhpcc/mpi   (7312 words)

  
 CSIT: MPI - The Message Passing Interface Library   (Site not responding. Last check: )
MPI is a message passing interface used for parallel processing in distributed memory systems.
Frequently, the user sets up one process as a master, and the others as workers, but this is not necessary.
Because the data is distributed, it is likely that a computation on one process will require that a data value be copied from another process.
www.csit.fsu.edu /supercomputer/sp3_mpi.html   (890 words)

  
 LA-MPI: The Los Alamos Message Passing Interface
Our future development is focused on the Open MPI project, a new component-based, extensible implementation of MPI-2 that will be released in early 2005.
LA-MPI is an implementation of the Message Passing Interface (MPI) motivated by a growing need for fault tolerance at the software level in large high-performance computing (HPC) systems.
The individual components -- processors, memory modules, network interface cards (NICs), etc. -- are typically manufactured to tolerances adequate for small or desktop systems.
public.lanl.gov /lampi   (525 words)

  
 MPI - Message Passing Interface
MPI is an interface or a set of library routines that are built on top of several common developing environments applicable to scientific computing such as FORTRAN, C and C++.
For the reason of familiarity and ease of implementation on my part, we will proceed with C. There are several implementations of MPI that can be used.
Now, these processes eventually need to communicate to pass on boundary information between processes as well as coming up with a tangible result to be expressed at the end of the program execution.
www.cs.toronto.edu /~arnold/492/ParallelAlgorithms/commentedReport/node13.html   (213 words)

  
 NTNU HPC Project - MPI   (Site not responding. Last check: )
MPI is a standard message passing programming interface for MIMD distributed memory concurrent computers, developed by the Message Passing Interface Forum (MPIF).
The final report, Version 1.0, of the MPIF, was released on May 5, 1994 and is available as a 220 page postscript document.
The file token.c application contains source which pass a token around, increment it by the processor count and output to file
hpc.ntnu.no /software/mpi.html   (421 words)

  
 Message Passing Interface   (Site not responding. Last check: )
Recently a standardized Message Passing Interface (MPI) was established by an international committee (the MPI Forum).
Interface to both C and Fortran, other languages could be supported.
Different languages have slightly different syntax for the interface, e.g.
www.dhpc.adelaide.edu.au /workshops/CSSM/MPI/node4.html   (159 words)

  
 National Partnership for Advanced Computational Infrastructure: Archives
MPI is a message passing interface which is used in conjunction with FORTRAN or C as a set of library calls that allows the programmer to pass information between multiple processors.
The primary goal of MPI is to establish an offical standard for message passing programming to be used across different platforms.
The simplest way to compile MPI applications is to use the script interfaces to the Fortran and C compilers that are provided with MPICH.
www.npaci.edu /Resources/SciComp/Applications/MPI   (1331 words)

  
 OOMPI   (Site not responding. Last check: )
The Object Oriented MPI (OOMPI) package is an object oriented approach to the Message Passing Interface (MPI).
OOMPI is a class library specification that encapsulates the functionality of MPI into a functional class hierarchy to provide a simple, flexible, and intuitive interface.
The "thin layer" approach to providing powerful class abstractions has been proven, with reasonable optimizing C++ compilers, to add virtually no overhead to the underlying MPI.
www.osl.iu.edu /research/oompi   (161 words)

  
 Message Passing Interface (MPI)   (Site not responding. Last check: )
MPI does not include necessities such as process management (the ability to start tasks), (virtual) machine configuration, and support for input and output.
As a result, it is anticipated that MPI will be realized as a communications interface layer that will be built upon native facilities of the underlying hardware platform, with the exception of certain data transfer operations that might be implemented at a level close to hardware.
This scenario permits the provision of PVM's being ported to MPI to exploit any communication performance a vendor supplies.
endor.hsutx.edu /cluster/mpi.html   (202 words)

  
 Message Passing Interface (MPI) Lab
The MPI implementation that we will be using is called MPICH (it is based on an earlier portable message passing language called Chameleon, hence the name MPICH).
You should look at an example hello world program in C or in Fortran when you are finished, or if you get stuck.
Write a program which sums all the processor numbers by connecting the processors in a ring and passing the processor numbers around the ring, summing them as they go.
www.dhpc.adelaide.edu.au /education/dhpc/lab/MPI/MPIlabnew1.html   (545 words)

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