Chapter 9. Software support
271
9.3.2 Capabilities
Parallel processing
For parallel jobs, LoadLeveler interfaces with parallel programming
software to obtain the multiple SP nodes required for the job's parallel
tasks.
Individual control
At the node level, users can specify to LoadLeveler when their
processing nodes are available and how they are to be used. For
example, some users might let their workstations accept any job during
the night, but only certain jobs during the day when they most need
their resources. Other users might simply tell LoadLeveler to monitor
their keyboard activity and make their workstations available whenever
they have been idle for a sufficient time.
Central control
LoadLeveler gives administrators a view of all jobs running on the
system and the resources available to those jobs. Administrators can
change the availability of theses resources to best fit their needs.
Scalability
As nodes are added, LoadLeveler automatically scales upward so that
the additional resources are transparent to the user.
Automated job tracking
By tracking processes spawned off by a job and cancelling any
processes left behind when a job is terminated, LoadLeveler ensures
that resources assigned to cancelled jobs become available for future
use.
Multiple user space tasks
LoadLeveler supports multiple user space tasks on both SP Switch and
SP Switch2. With the use of Parallel Environment V3.1 and the new SP
Switch2, LoadLeveler V2.2 can handle up to 4096 user-space tasks.
Additional scheduling algorithm
Includes the Backfill scheduler, which runs both serial and parallel jobs.
National language support (NLS)
LoadLeveler is enabled for NLS. Error messages are externalized in
both message catalogues and the LoadLeveler Diagnosis and
Messages Guide.
Summary of Contents for RS/6000 SP
Page 2: ......
Page 6: ...iv RS 6000 SP and Clustered IBM pSeries Systems Handbook...
Page 16: ...xiv RS 6000 SP and Clustered IBM pSeries Systems Handbook...
Page 48: ...24 RS 6000 SP and Clustered IBM pSeries Systems Handbook...
Page 100: ...76 RS 6000 SP and Clustered IBM pSeries Systems Handbook...
Page 182: ...158 RS 6000 SP and Clustered IBM pSeries Systems Handbook...
Page 218: ...194 RS 6000 SP and Clustered IBM pSeries Systems Handbook...
Page 284: ...260 RS 6000 SP and Clustered IBM pSeries Systems Handbook...
Page 388: ...364 RS 6000 SP and Clustered IBM pSeries Systems Handbook...
Page 436: ...412 RS 6000 SP and Clustered IBM pSeries Systems Handbook...
Page 477: ...0 1 spine 0 1 0 169 53 89 pages RS 6000 SP and Clustered IBM pSeries Systems Handbook...
Page 478: ......
Page 479: ......