ExpertGlossary

The Message Passing Interface (MPI) is a library specification for message-passing, proposed as a standard by a broadly based committee of vendors, implementors, and users.

For more information, see http://www-unix.mcs.anl.gov/mpi/.

A program that typically operates at a higher level than a job scheduler (typically, above the GRAM level). It schedules and submits jobs to GRAM services.

One of the executable jobs in a multijob rendezvous.

In reality, GridFTP is not one protocol, but a collection of several protocols. There is a protocol used on the control channel, but there is a range of protocols available for use on the data channel. Which protocol is used is selected by the MODE command. Four modes are defined: STREAM (S), BLOCK (B), COMPRESSED (C) in RFC 959 for FTP, and EXTENDED BLOCK (E) in GFD.020 for GridFTP. There is also a new data channel protocol, or mode, being defined in the GGF GridFTP Working group which, for lack of a better name at this point, is called MODE X.

See also extended block mode (MODE E).

See also stream mode (MODE S).

A job that is itself composed of several executable jobs; these are processed by the MMJS subjob.

See also MMJS subjob.

A mechanism used by GRAM to synchronize between job processes in a multiprocess job and between.