Administering Platform LSF - SAS

Supported Resource Usage Limits and Syntax
Data segment size limit
% bsub -c 10/DEC3000 myjob
See “CPU Time and Run Time Normalization” on page 357 for more
information.
File size limit
Memory limit
LSF memory limit
enforcement
Job syntax (bsub) Queue syntax (lsb.queues) Fomat/Units
-D data_limit DATALIMIT=[default] maximum integer KB
Sets a per-process (soft) data segment size limit in KB for each process that
belongs to this batch job. An sbrk() or malloc() call to extend the data
segment beyond the data limit returns an error. The default is no soft limit.
Job syntax (bsub) Queue syntax (lsb.queues) Fomat/Units
-F file_limit FILELIMIT=limit integer KB
Sets a per-process (soft) file size limit in KB for each process that belongs to
this batch job. If a process of this job attempts to write to a file such that the
file size would increase beyond the file limit, the kernel sends that process a
SIGXFSZ signal. This condition normally terminates the process, but may be
caught. The default is no soft limit.
Job syntax (bsub) Queue syntax (lsb.queues) Fomat/Units
-M mem_limit MEMLIMIT=[default] maximum integer KB
Sets the memory limit, in KB.
If LSB_MEMLIMIT_ENFORCE or LSB_JOB_MEMLIMIT in lsf.conf are set to
y, LSF kills the job when it exceeds the memory limit. Otherwise, LSF passes
the memory limit to the operating system. Some operating systems apply the
memory limit to each process, and some do not enforce the memory limit at all.
To enable LSF memory limit enforcement, set LSB_MEMLIMIT_ENFORCE in
lsf.conf to y. LSF memory limit enforcement explicitly sends a signal to kill
a running process once it has allocated memory past mem_limit.
You can also enable LSF memory limit enforcement by setting
LSB_JOB_MEMLIMIT in lsf.conf to y. The difference between
LSB_JOB_MEMLIMIT set to y and LSB_MEMLIMIT_ENFORCE set to y is that
with LSB_JOB_MEMLIMIT, only the per-job memory limit enforced by LSF is
enabled. The per-process memory limit enforced by the OS is disabled. With
LSB_MEMLIMIT_ENFORCE set to y, both the per-job memory limit enforced by
LSF and the per-process memory limit enforced by the OS are enabled.
LSB_JOB_MEMLIMIT disables per-process memory limit enforced by the OS
and enables per-job memory limit enforced by LSF. When the total memory
allocated to all processes in the job exceeds the memory limit, LSF sends the
following signals to kill the job: SIGINT first, then SIGTERM, then SIGKILL.
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Administering Platform LSF