User manual

Glossary
mdce
The service that has to run on all machines before they can run a job
manager or worker. This is the engine foundation p rocess, making sure
that the job manager and worker processes that it controls are always
running.
Note that the program and service name is all lowercase letters.
mdce_d ef file
The file that defines all the defaults for the mdce processes by allowing
you to set preferences o r definitions in the f orm of p aramete r values.
MPI
Message Passing Interface, the m eans by w hich labs communicate with
each other while running tasks in the same job.
node
A computer that is part of a cluster.
parallel application
Thesameapplicationthatrunsonseveral labs simultaneously, with
communication, shared data, or synchronization points between the
labs.
private array
An array which resides in the workspaces of one or more, but perhaps
not all labs. There might or might not b e a relationship between the
values of these arrays among the labs.
random port
A random unprivileged TCP port, i.e., a random TCP port above 1024.
register a worker
The action that happens when both worker and job manager are started
and the worker contacts job manager.
replicated array
An array which resides in the workspaces of all labs, and whose size and
content are identical on all labs.
Glossary-4