condor_findhost(1) [debian man page]
condor_findhost(1) General Commands Manual condor_findhost(1) Name condor_findhost find - machine(s) in the pool that can be used with minimal impact on currently running Condor jobs and best meet any spec- ified constraints Synopsis condor_findhost [-help] [-m] [-n num] [-c c_expr] [-r r_expr] [-p centralmanagerhostname] Description condor_findhostsearches a Condor pool of machines for the best machine or machines that will have the minimum impact on running Condor jobs if the machine or machines are taken out of the pool. The search may be limited to the machine or machines that match a set of constraints and rank expression. condor_findhostreturns a fully-qualified domain name for each machine. The search is limited (constrained) to a specific set of machines using the -coption. The search can use the -roption for rank, the criterion used for selecting a machine or machines from the constrained list. Options -help Display usage information and exit -m Only search for entire machines. Slots within an entire machine are not considered. -n num Find and list up to nummachines that fulfill the specification. numis an integer greater than zero. -c c_expr Constrain the search to only consider machines that result from the evaluation of c_expr. c_expris a ClassAd expression. -r r_expr r_expris the rank expression evaluated to use as a basis for machine selection. r_expris a ClassAd expression. -p centralmanagerhostname Specify the pool to be searched by giving the central manager's host name. Without this option, the current pool is searched. General Remarks condor_findhostis used to locate a machine within a pool that can be taken out of the pool with the least disturbance of the pool. An administrator should set preemption requirements for the Condor pool. The expression (Interactive =?= TRUE ) will let condor_findhostknow that it can claim a machine even if Condor would not normally preempt a job running on that machine. Exit Status The exit status of condor_findhostis zero on success. If not able to identify as many machines as requested, it returns one more than the number of machines identified. For example, if 8 machines are requested, and condor_findhostonly locates 6, the exit status will be 7. If not able to locate any machines, or an error is encountered, condor_findhostwill return the value 1. Examples To find and list four machines, preferring those with the highest mips (on Drystone benchmark) rating: condor_findhost -n 4 -r "mips" To find and list 24 machines, considering only those where the kflops attribute is not defined: condor_findhost -n 24 -c "kflops=?=undefined" Author Condor Team, University of Wisconsin-Madison Copyright Copyright (C) 1990-2012 Condor Team, Computer Sciences Department, University of Wisconsin-Madison, Madison, WI. All Rights Reserved. Licensed under the Apache License, Version 2.0. See the Condor Version 7.8.2 Manualor http://www.condorproject.org/licensefor additional notices. condor-admin@cs.wisc.edu September 2012 condor_findhost(1)
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condor_reschedule(1) General Commands Manual condor_reschedule(1) Name condor_reschedule Update - scheduling information to the central manager Synopsis condor_reschedule [-help -version] condor_reschedule[-debug] [-pool centralmanagerhostname[:portnumber]] [-name hostnamehostname-addr "<a.b.c.d:port>""<a.b.c.d:port>"-con- straint expression-all] Description condor_rescheduleupdates the information about a set of machines' resources and jobs to the central manager. This command is used to force an update before viewing the current status of a machine. Viewing the status of a machine is done with the condor_statuscommand. con- dor_reschedulealso starts a new negotiation cycle between resource owners and resource providers on the central managers, so that jobs can be matched with machines right away. This can be useful in situations where the time between negotiation cycles is somewhat long, and an administrator wants to see if a job in the queue will get matched without waiting for the next negotiation cycle. A new negotiation cycle cannot occur more frequently than every 20 seconds. Requests for new negotiation cycle within that 20 second window will be deferred until 20 seconds have passed since that last cycle. Options -help Display usage information -version Display version information -debug Causes debugging information to be sent to stderr , based on the value of the configuration variable TOOL_DEBUG -pool centralmanagerhostname[:portnumber] Specify a pool by giving the central manager's host name and an optional port number -name hostname Send the command to a machine identified by hostname hostname Send the command to a machine identified by hostname -addr <a.b.c.d:port> Send the command to a machine's master located at "<a.b.c.d:port>" <a.b.c.d:port> Send the command to a machine located at "<a.b.c.d:port>" -constraint expression Apply this command only to machines matching the given ClassAd expression -all Send the command to all machines in the pool Exit Status condor_reschedulewill exit with a status value of 0 (zero) upon success, and it will exit with the value 1 (one) upon failure. Examples To update the information on three named machines: % condor_reschedule robin cardinal bluejay To reschedule on a machine within a pool other than the local pool, use the -pooloption. The argument is the name of the central manager for the pool. Note that one or more machines within the pool must be specified as the targets for the command. This command reschedules the single machine named cae17within the pool of machines that has condor.cae.wisc.eduas its central manager: % condor_reschedule -pool condor.cae.wisc.edu -name cae17 Author Condor Team, University of Wisconsin-Madison Copyright Copyright (C) 1990-2012 Condor Team, Computer Sciences Department, University of Wisconsin-Madison, Madison, WI. All Rights Reserved. Licensed under the Apache License, Version 2.0. See the Condor Version 7.8.2 Manualor http://www.condorproject.org/licensefor additional notices. condor-admin@cs.wisc.edu September 2012 condor_reschedule(1)