Using and Administering
Purpose
Returns information about classes.
Syntax
llclass [-?] [-H]
[-v] [-l]
[classlist]
Flags
- -?
- Provides a short usage message.
- -H
- Provides entended help information.
- -v
- Outputs the name of the command, release number, service level, service
level date, and operating system used to build the command.
- -l
- Specifies that a long listing be generated for each class for which status
is requested. If -l is not specified, then the
standard listing is generated.
- classlist
- Is a blank-delimited list of classes for which you are requesting
status. If no classlist is specified, all classes are
queried.
If you have more than a few classes configured for LoadLeveler, consider
redirecting the output to a file when you use the -l flag.
Examples
This example generates a long listing for classes named silver
and gold:
llclass -l silver gold
Results
The Standard
Listing: . The standard listing is generated when you do
not specify -l with the llclass
command. The following is sample output from the llclass
silver command, where there are five silver classes
configured in the cluster, with one silver class job currently
running:
+--------------------------------------------------------------------------------+
|Name MaxJobCPU MaxProcCPU Free Max Description |
| d+hh:mm:ss d+hh:mm:ss Slots Slots |
| |
|silver 0+00:30:00 0+00:10:00 4 5 silver grade jobs |
+--------------------------------------------------------------------------------+
The standard listing includes the following fields:
- MaxJobCPU
- The CPU limit for all the processes in a job of this class. For a
parallel job, this is the CPU limit for all processes in a task.
- MaxProcCPU
- The CPU limit for processes in this class.
- Free Slots
- The number of free slots (available classes) on this machine.
- Max Slots
- The total number of slots (configured classes) on this cluster.
- Description
- The description of this class.
The Long Listing: The
long listing is generated when you specify the -l option on the
llclass command. The following is sample output from the
llclass -l silver command, where there are five silver
classes configured in the cluster, with one silver class job
currently running:
+--------------------------------------------------------------------------------+
| |
|=============== Class silver =============== |
| Name: silver |
| Priority: 50 |
| Exclude_Users: user1 |
| Exclude_Groups: 85ba |
| Admin: loadl:brownap:alice |
| NQS_class: F |
| NQS_submit: |
| NQS_query: |
| Max_processors: 1 |
| Maxjobs: 15 |
|Resource_requirement: spice2g6(2) |
| Class_comment: silver grade jobs |
| Wall_clock_limit: 0+02:00:00, 0+01:00:00 |
| Job_cpu_limit: 0+00:59:59, 0+00:29:29 |
| Cpu_limit: 0+00:30:00, 0+00:10:00 |
| Data_limit: -1, -1 |
| Core_limit: -1, -1 |
| File_limit: -1, -1 |
| Stack_limit: -1, -1 |
| Rss_limit: -1, -1 |
| Nice: 15 |
| Free: 13 |
| Maximum: 21 |
| |
+--------------------------------------------------------------------------------+
The long listing includes these fields:
- Name
- The name of the class
- Priority
- The system priority of this class relative to other classes.
- Exclude_Users
- Users who are not permitted to submit jobs of this class.
- Exclude_Groups
- Groups who are not allowed to submit jobs of this class.
- Admin
- The list of administrators of this class.
- NQS_class
- Indicates whether this class is a gateway for an NQS system.
- NQS_submit
- The NQS queue where the job will be submitted.
- NQS_query
- The NQS queues to query where the job has been dispatched.
- Max_processors
- The maximum number of processors than can be used for parallel
jobs.
- Max_jobs
- The maximum number of jobs the class can run at any time.
- Resource_requirement
- Default consumable resource requirements for jobs of this
class.
- Class_comment
- The text supplied by the administrator describing this class.
- Wall_clock_limit
- The hard and soft wall clock limits (the elapsed time for which the job
can run).
- Job_cpu_limit
- The hard and soft CPU limits for all processes in a job of this
class.
- Cpu_limit
- The hard and soft CPU limits for all processes in this class.
- Data_limit
- The hard and soft limits for the data area used for processes in this
class.
- Core_limit
- The hard and soft core size limits.
- File_limit
- The hard and soft file size limits.
- Stack_limit
- The hard and soft stack size limits.
- Rss_limit
- The hard and soft rss size limits.
- Nice
- The nice value of jobs in this class.
- Free
- The number of classes available to new jobs.
- Maximum
- The total number of configured classes in this cluster.
Related Information
Each machine periodically updates the central manager with a snapshot of
its environment. Since the information returned by llclass
is a collection of these snapshots, all taken at varying times, the total
picture may not be completely consistent.
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