IBM Data and AI Ideas Portal for Customers


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Spectrum LSF

Showing 476

Preserving job array conditions in multicluster

Job array conditions are widely used on our machines to manage when jobs are dispatched. Certain workflows require specific job stepping. Job array conditions aren't present in a multicluster environment. Our workaround involves submitting a job i...
almost 8 years ago in Spectrum LSF 2 Not under consideration

Adding forking child to sbatchd can prevent significant delays and cascading problems associated with slow cgroup writes.

Platform LSF's root sbatchd daemon on the execution host gets stuck while writing to one of the cgroup subsystem. This causes the host to show unreachable status, and no new jobs will be dispatched to this host. Jobs which were already running on ...
about 8 years ago in Spectrum LSF 2 Not under consideration

LSF / Extend "span[hosts=xx]" capability to several hosts to optimize cpu utilization in exclusive context

There is no way today to optimize CPU utilization over several hosts, i.e. to specify on how many servers the job should be dispatched, and let LSF use all available cpu on these hosts. This works fine with 1 single host, using cpu range and "span...
about 8 years ago in Spectrum LSF 2 Not under consideration

RTM: limits monitoring

We identified the needs of user limits monitoring, the blimits -w output accounting & per user|host|queue|hostgroup related graphs.
over 8 years ago in Spectrum LSF 3 Not under consideration

Set 2 levels for loadSched

1. By design, if the loadSched condition is not satisfied, no jobs can be dispatched to the host. Even if we submit a job which will not use the lacking resource, the job can't be dispatched to the host, either. 2. We think this is a waste of the ...
over 8 years ago in Spectrum LSF 2 Not under consideration

Can bstop release slots in order that other jobs can start on the same host ?

Here is an example. I tried the following case. gnx5561 has been booked by advanced reservation: RSVID TYPE USER NCPUS RSV_HOSTS TIME_WINDOW res0 group res0 3/4 gnx5561:3/4 7/28/18/0-7/30/12/0 I have launched one job reserving 3 cpus (857274). It ...
over 8 years ago in Spectrum LSF 2 Not under consideration

RTM: add grid cache directory purge feature

currently, the directory use for job graphs (specified in the "Console->Grid Settings->Paths->Grid Cache Dir" field) is never clean up. can you please add feature to purge this directory to avoid disk space saturation ?
about 9 years ago in Spectrum LSF 3 Not under consideration

LSF: unable to update host resources using bconf

Hello, 1st: not possible to update host resources using bconf although that it is documented in the man pages & bconf help. see ex1 "in use case example" 2nd: another way should be to have an extra sub command to add or remove a specific resou...
about 9 years ago in Spectrum LSF 2 Not under consideration

LSF: bhosts (-w,-l) status when host is closed_Adm and unavail or unreach

bhosts -l HOST ...STATUS CPUF JL/U MAX NJOBS RUN SSUSP USUSP RSV DISPATCH_WINDOWunavail 1.00 - 3 0 0 0 0 0 - LOAD THRESHOLD USED FOR SCHEDULING: .... ADMIN ACTION COMMENT: "HDD or RAID ctlr issue"badmin hhist Mon Dec 29 08:17:06: Host closed by ad...
about 9 years ago in Spectrum LSF 3 Not under consideration

Cgroups CPU subsystem support

We want to ensure that jobs get the CPU time according to the amount of slots requested, especially on nodes shared by multiple jobs. This has always been an important goal in HPC environments. To achieve this we can use affinity, however CPU affi...
over 9 years ago in Spectrum LSF 4 Not under consideration

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