MAX_SBD_CONNS

Syntax

MAX_SBD_CONNS=integer

Description

The maximum number of file descriptors mbatchd can have open and connected concurrently to sbatchd

Controls the maximum number of connections that LSF can maintain to sbatchds in the system.

Do not exceed the file descriptor limit of the root process (the usual limit is 1024). Setting it equal or larger than this limit can cause mbatchd to constantly die because mbatchd allocates all file descriptors to sbatchd connection. This could cause mbatchd to run out of descriptors, which results in an mbatchd fatal error, such as failure to open lsb.events.

Use together with LSB_MAX_JOB_DISPATCH_PER_SESSION in lsf.conf.

Example

A reasonable setting is:

MAX_SBD_CONNS=768

For a large cluster, specify a value equal to the number of hosts in your cluster plus a buffer. For example, if your cluster includes 4000 hosts:MAX_SBD_CONNS=4100
Important:

Set LSB_MAX_JOB_DISPATCH_PER_SESSION in lsf.conf equal to one-half the value of MAX_SBD_CONNS.

Default

64