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Follows the PBS Pro Design Document Guidelines.

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• Link to Developer Forum
• PP-725
• Link to Pull Request
• Ref :
  1. pbs command "pbs_release_nodes",  section 2.32 in Reference Guide v19.2.3
  2. sub section titled "17.6.2.5 Releasing Vnodes" in Reference Guide v19.2.3

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This is to enhance the "node ramp down" feature, by introducing a new option "-k <select>" ("k" for "keep") to the pbs command "pbs_release_nodes". This will allow a users or admins to retain some of the sister nodes/vnodes which satisfy the "select" argument, while performing node ramp down operation.

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will release the nodes (nd_abc_3[0]:ncpus=5)+(nd_abc_3[1]:ncpus=15)+(nd_abc_6_bm:ncpus=1)+(nd_def_1:ncpus=32)+(nd_def_2:ncpus=32) from the job while retaining the nodes (nd_abc_1:ncpus=5)+(nd_abc_2:ncpus=5)+(nd_abc_4_bm:ncpus=1)+(nd_abc_5_bm:ncpus=1).

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• The "select" string parameter will be passed to "pbs_relnodesjob()" using its "extend" argument which is of type "char * "

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