IBM Data and AI Ideas Portal for Customers


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Administration

Showing 56

Have LSF Handle ZOMBI job searching using either BTREE or HASH ALGO's

Large number of ZOMBI jobs can impact very large clusters operations resulting in high backlogs and additional lost job status. Improving the ZOMBI search algorithm from Linear Search to BTREE or HASH would reduce this impact.
5 months ago in Spectrum LSF / Administration 0 Future consideration

Enhance the Support Tool to be able to remove ZOMBI jobs and create a log of exec hosts and pgids that need to be cleaned

We had an issue where LSF could not keep up with dispatch due to high numbers of ZOMBI jobs. We would like the ability to shut down LSF and clean up the ZOMBI jobs via a Database repair to accelerate the time-to-restore of the LSF clusters.
5 months ago in Spectrum LSF / Administration 0 Future consideration

Make Queue Open/Close/Act/Inact 'all' Requests a single event

We recently had a serious issue that required us to close/inact all of our queues, and then perform a database repair using the IBM support tool. However, when we started LSF, all but one of the queues was Open/Act again. This was due to the suppo...
5 months ago in Spectrum LSF / Administration 0 Future consideration

Make the TCP Backlog for the MBATCH and MBATCHD Query Port Configurable for Large Clusters

We have been monitoring the TCP backlogs for LIM, MBD, and the Query port for some time, and there are periods where the MBD query port becomes overloaded resulting in a higher than expected count of UNKNOWN and sometimes eventually ZOMBI jobs, an...
5 months ago in Spectrum LSF / Administration 0 Future consideration

Add lsb.params setting to limit the number of times a job can be redispatched upon either a pre-exec failure of job initilization failure

We currently have jobs that will bounce from host to host either based upon a pre-exec failure, or a job initialization failure. This can impact > 500 hosts and cause an increase in MBD memory use. It would be nice to have a setting such as: MA...
5 months ago in Spectrum LSF / Administration 0 Future consideration

Improve Job Priority Output to Exceed 1e6 as APS can easily increase Per Job Priority above that value

There is currently a system limitation that Job Priories above 1e6 do not display correctly when using bjobs -o "blah" formatted output. This is currently causing us a monitoring issue when attempting to order jobs with a very high dynamic priorit...
6 months ago in Spectrum LSF / Administration 0 Future consideration

About bjobs in different clusters

Suppose there are two clusters. These two clusters are being used by one business division. However, users who submit jobs are not aware of the cluster. They don't know what cluster they're using and they don't know that they need sourcing fo...
6 months ago in Spectrum LSF / Administration 0 Future consideration

fix systemctl script to restart sbatchd

The root sbatchd crashes frequently in our cluster (and without anything useful in the log), but systemctl is not configured to restart the daemon. Please see the details in the related support case, but essentially we need to make it so this daem...
6 months ago in Spectrum LSF / Administration 1

Support Multi-threaded LIM with a Shared Memory Database for Scalability

It would be nice if LSF's LIM used a shared memory database and could accept multiple threads instead of having to constantly fork itself to return client data. The new setting to increase/decrease the LIM connection backlog was informative, but i...
6 months ago in Spectrum LSF / Administration 0 Future consideration

Allow bjobs command to show the pre and post exec exitStatus/exitCode information

Right now, we require bhist to get any detail on pre/post exec error codes, it would be nice if we could get this from the job record via bjobs vs. bhist. bhist in very large environments is a non-starter for obtaining this status information.
10 months ago in Spectrum LSF / Administration 0 Future consideration

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