Administering Platform LSF - SAS

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$Intel(R) Math Kernel Library for Linux* OS User's Guide$

How Preemptive Scheduling Works Job slot limits specified at the queue level are never affected by preemptive scheduling; they are always enforced for both running and suspended jobs. Preemption of multiple job slots Preemption of parallel jobs If multiple resources are required, LSF can preempt multiple jobs, until sufficient resources are available. For example, one or more jobs might be preempted for a job that needs multiple job slots. When a high-priority parallel job preempts multiple low-priority parallel jobs, sometimes LSF preempts more low-priority jobs than are necessary to release sufficient job slots to start the high-priority job. Use the PREEMPT_FOR parameter in lsb.params to enable the optimized preemption of parallel jobs, so LSF preempts fewer of the low-priority parallel jobs. See “Optimized Preemption of Parallel Jobs” on page 460 for more information. 180 Administering Platform LSF
Configuring Preemptive Scheduling Syntax Chapter 12 Preemptive Scheduling To configure preemptive scheduling, make at least one queue in the cluster preemptive (not the lowest-priority queue) or preemptable (not the highestpriority queue). To make a queue preemptive or preemptable, set PREEMPTION in the queue definition (lsb.queues) to PREEMPTIVE or PREEMPTABLE. A queue can be both: its jobs can always preempt jobs in lower priority queues, and can always be preempted by jobs from higher priority queues. PREEMPTION = PREEMPTIVE[[queue_name[+pref_level]...]] PREEMPTABLE[[queue_name...]] When you specify a list of queues, you must enclose the list in one set of square brackets. PREEMPTIVE[[queue_name[+pref_level] ...]] Defines a preemptive queue. Jobs in this queue can preempt jobs from specified lower priority queues only, or from all lower priority queues by default if the parameter is specified with no queue names. If you specify a list of lower-priority preemptable queues, you must enclose the list in one set of square brackets. To indicate an order of preference for the lower-priority queues, put a plus sign (+) after the names of queues and a preference level as a positive integer. See “Configuring preemptable queue preference” on page 182 for more information. PREEMPTABLE [[queue_name ...]] Defines a preemptable queue. Jobs in this queue can be preempted by jobs from specified higher-priority queues, or from all higher-priority queues by default (if the parameter is specified with no queue names), even if the higherpriority queues are not preemptive. If you specify a list of higher-priority queues, you must enclose the list in one set of square brackets. Example In these examples, assume Queue 1 has highest priority and Queue 4 the lowest. ◆ If the following settings are in lsb.queues: QUEUE_NAME=Queue1 PREEMPTION=PREEMPTIVE Queue 1 is preemptive, so it can preempt jobs in all lower-priority queues (Queues 2, 3 and 4). ◆ If the following settings are in lsb.queues: QUEUE_NAME=Queue1 PREEMPTION=PREEMPTIVE[Queue3 Queue4] Queue 1 is preemptive, but can only preempt jobs in Queues 3 and 4, not Queue 2. ◆ If the following settings are in lsb.queues: QUEUE_NAME=Queue3 PREEMPTION=PREEMPTIVE PREEMPTABLE Administering Platform LSF 181
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Administering Platform LSF® Versio
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Contents Welcome . . . . . . . . .
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Contents Part II: Working with Reso
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Contents 17 Reserving Resources . .
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Contents 30 External Job Submission
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Contents 40 Non-Shared File Systems
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Welcome Contents ◆ “About This
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Welcome Command notation Notation M
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Welcome Platform LSF License Schedu
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Welcome Resource requirement specif
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Welcome Run-time enhancements Threa
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Welcome Environment variables ◆
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Welcome New files added to installa
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Technical Support Contact Platform
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C H A P T E R 1 About Platform LSF
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Chapter 1 About Platform LSF Job sl
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Chapter 1 About Platform LSF Master
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Chapter 1 About Platform LSF Master
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Chapter 1 About Platform LSF Host t
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Chapter 1 About Platform LSF Extern
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Chapter 1 About Platform LSF Job Li
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C H A P T E R 2 How the System Work
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Chapter 2 How the System Works Queu
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Chapter 2 How the System Works Disp
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Job Execution Environment Shared us
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Fault Tolerance Dynamic master host
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P A R T I Managing Your Cluster Con
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Viewing Cluster Information Viewing
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Default Directory Structures Defaul
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Default Directory Structures Window
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Controlling Daemons Controlling Dae
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Controlling mbatchd Controlling mba
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Reconfiguring Your Cluster 3 Run ba
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Host States Host States Host states
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Viewing Host Information Viewing Ho
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Viewing Host Information type Viewi
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Controlling Hosts Controlling Hosts
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Adding a Host Adding a Host Use lsf
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Removing a Host Removing a Host CAU
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Adding and Removing Hosts Dynamical
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Adding and Removing Hosts Dynamical
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Adding Host Types and Host Models t
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Registering Service Ports NIS or NI
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Host Naming Host Naming Network add
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Hosts with Multiple Addresses Examp
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Host Groups Host Groups Where to us
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Tuning CPU Factors Tuning CPU Facto
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Handling Host-level Job Exceptions
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Handling Host-level Job Exceptions
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Queue States Queue States Queue sta
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Viewing Queue Information SCHEDULIN
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Controlling Queues Controlling Queu
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Controlling Queues Dispatch Windows
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Managing Queues Managing Queues Res
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Handling Job Exceptions Configuring
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Job States Job States The bjobs com
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Job States Viewing wait status and
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Viewing Job Information Viewing exc
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Switching Jobs from One Queue to An
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Suspending and Resuming Jobs Suspen
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Sending a Signal to a Job Sending a
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Using Job Groups Creating a job gro
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Using Job Groups % bhist -l 105 You
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Viewing User and User Group Informa
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Page 132 and 133: LSF User Groups LSF User Groups You
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Page 137 and 138: C H A P T E R 8 Understanding Resou
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Page 141 and 142: Chapter 8 Understanding Resources S
Page 143 and 144: How LSF Uses Resources Viewing job
Page 145 and 146: Chapter 8 Understanding Resources S
Page 147 and 148: Chapter 8 Understanding Resources V
Page 149 and 150: Chapter 8 Understanding Resources A
Page 151 and 152: C H A P T E R 9 Adding Resources Co
Page 153 and 154: Adding New Resources to Your Cluste
Page 155 and 156: Chapter 9 Adding Resources Configur
Page 157 and 158: Static Shared Resource Reservation
Page 159 and 160: Chapter 9 Adding Resources Configur
Page 161 and 162: Chapter 9 Adding Resources ELIM res
Page 163 and 164: Modifying a Built-In Load Index Con
Page 165: P A R T III Scheduling Policies Con
Page 168 and 169: Specifying Time Values Specifying T
Page 170 and 171: Specifying Time Expressions Specify
Page 172 and 173: Automatic Time-based Configuration
Page 174 and 175: Deadline Constraint Scheduling Dead
Page 176 and 177: Exclusive Scheduling 176 Administer
Page 178 and 179: About Preemptive Scheduling About P
Page 182 and 183: Configuring Preemptive Scheduling Q
Page 184 and 185: Configuring Preemptive Scheduling 1
Page 186 and 187: About Resource Requirements About R
Page 188 and 189: Queue-Level Resource Requirements V
Page 190 and 191: About Resource Requirement Strings
Page 192 and 193: Selection String Selection String S
Page 194 and 195: Order String Order String Syntax De
Page 196 and 197: Usage String Example rusage[mem=50:
Page 198 and 199: Span String Span String Syntax A sp
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Page 202 and 203: About Fairshare Scheduling About Fa
Page 204 and 205: User Share Assignments Examples ◆
Page 206 and 207: Dynamic User Priority Default dynam
Page 208 and 209: Host Partition Fairshare Host Parti
Page 210 and 211: Queue-Level User-based Fairshare Qu
Page 212 and 213: Cross-queue Fairshare bqueues -l al
Page 214 and 215: Cross-queue Fairshare 3 In all the
Page 216 and 217: Hierarchical Fairshare Viewing hier
Page 218 and 219: Queue-based Fairshare Queue-based F
Page 220 and 221: Configuring Slot Allocation per Que
Page 222 and 223: Viewing Queue-based Fairshare Alloc
Page 224 and 225: Typical Slot Allocation Scenarios T
Page 226 and 227: Typical Slot Allocation Scenarios W
Page 228 and 229: Typical Slot Allocation Scenarios T
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Using Historical and Committed Run
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Using Historical and Committed Run
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Users Affected by Multiple Fairshar
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Ways to Configure Fairshare Ways to
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Ways to Configure Fairshare Example
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Using Goal-Oriented SLA Scheduling
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Using Goal-Oriented SLA Scheduling
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Configuring Service Classes for SLA
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Viewing Information about SLAs and
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Viewing Information about SLAs and
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Understanding Service Class Behavio
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C H A P T E R 16 Resource Allocatio
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Chapter 16 Resource Allocation Limi
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C H A P T E R 17 Reserving Resource
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Chapter 17 Reserving Resources Usin
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Chapter 17 Reserving Resources Usin
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Chapter 17 Reserving Resources View
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C H A P T E R 18 Managing Software
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Host Locked Licenses Chapter 18 Man
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Network Floating Licenses Chapter 1
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Chapter 18 Managing Software Licens
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C H A P T E R 19 Dispatch and Run W
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Run Windows Configuring run windows
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C H A P T E R 20 Job Dependencies C
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Chapter 20 Job Dependencies ◆ In
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Chapter 20 Job Dependencies externa
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C H A P T E R 21 Job Priorities Con
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Chapter 21 Job Priorities Specifyin
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C H A P T E R 22 Job Requeue and Jo
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Chapter 22 Job Requeue and Job Reru
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C H A P T E R 23 Job Checkpoint, Re
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Approaches to Checkpointing Kernel-
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Chapter 23 Job Checkpoint, Restart,
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Checkpointing a Job Prerequisites C
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Making Jobs Checkpointable Manually
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Enabling Periodic Checkpointing At
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Restarting Checkpointed Jobs Requir
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Chapter 23 Job Checkpoint, Restart,
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C H A P T E R 24 Chunk Job Dispatch
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Chapter 24 Chunk Job Dispatch Confi
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Submitting and Controlling Chunk Jo
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Chapter 24 Chunk Job Dispatch Fairs
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C H A P T E R Ë 25 Job Arrays LSF
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Chapter 25 Job Arrays Maximum size
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Redirecting Standard Input and Outp
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Chapter 25 Job Arrays Job Array Dep
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Chapter 25 Job Arrays Specific job
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Requeuing a Job Array Chapter 25 Jo
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P A R T V Controlling Job Execution
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About Resource Usage Limits About R
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Specifying Resource Usage Limits Sp
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Specifying Resource Usage Limits If
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Supported Resource Usage Limits and
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CPU Time and Run Time Normalization
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Automatic Job Suspension Automatic
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Suspending Conditions Suspending Co
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Suspending Conditions Viewing suspe
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About Pre-Execution and Post-Execut
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Configuring Pre- and Post-Execution
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Configuring Pre- and Post-Execution
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About Job Starters About Job Starte
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Command-Level Job Starters Command-
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Queue-Level Job Starters Queue-Leve
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Controlling Execution Environment U
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Understanding External Executables
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Using esub Option LSB_SUB_EXCEPTION
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Using esub General esub logic Rejec
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Using esub # Deny userC the ability
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Working with eexec Working with eex
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Default Job Control Actions Default
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Configuring Job Control Actions Con
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Configuring Job Control Actions Exa
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Customizing Cross-Platform Signal C
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C H A P T E R 32 Interactive Jobs w
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Chapter 32 Interactive Jobs with bs
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Interactive Batch Job Messaging Lim
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Running X Applications with bsub Ch
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C H A P T E R 33 Running Interactiv
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Chapter 33 Running Interactive and
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Interactive Tasks Chapter 33 Runnin
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P A R T VII Running Parallel Jobs C
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How LSF Runs Parallel Jobs How LSF
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Submitting Parallel Jobs Submitting
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Submitting MPI Jobs Submitting MPI
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Starting Parallel Tasks with LSF Ut
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Specifying a Minimum and Maximum Nu
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Specifying a Mandatory First Execut
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Controlling Processor Allocation Ac
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Running Parallel Processes on Homog
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Using LSF Make to Run Parallel Jobs
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Limiting the Number of Processors A
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Reserving Processors Reserving Proc
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Reserving Memory for Pending Parall
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Allowing Jobs to Use Reserved Job S
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Allowing Jobs to Use Reserved Job S
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Parallel Fairshare Parallel Fairsha
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Optimized Preemption of Parallel Jo
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About Advance Reservation About Adv
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Configuring Advance Reservation ◆
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Using Advance Reservation Adding a
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Using Advance Reservation Removing
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Using Advance Reservation 6:10 0 10
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Using Advance Reservation Modifying
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Using Advance Reservation 474 Admin
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C H A P T E R 36 Event Generation C
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Chapter 36 Event Generation Events
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C H A P T E R 37 Tuning the Cluster
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Adjusting LIM Parameters RUNWINDOW
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Chapter 37 Tuning the Cluster Compa
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Changing Default LIM Behavior to Im
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Chapter 37 Tuning the Cluster Whene
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Tuning mbatchd on UNIX Operating sy
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C H A P T E R 38 Authentication Con
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Chapter 38 Authentication eauth -c
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Chapter 38 Authentication How LSF d
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Chapter 38 Authentication Correctin
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Chapter 38 Authentication About Dae
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User Account Mapping Chapter 38 Aut
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C H A P T E R 39 Job Email, and Job
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Chapter 39 Job Email, and Job File
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C H A P T E R 40 Non-Shared File Sy
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Chapter 40 Non-Shared File Systems
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Chapter 40 Non-Shared File Systems
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C H A P T E R 41 Error and Event Lo
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Chapter 41 Error and Event Logging
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System Event Log CAUTION Chapter 41
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Chapter 41 Error and Event Logging
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C H A P T E R 42 Troubleshooting an
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Common LSF Problems LIM dies quietl
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Chapter 42 Troubleshooting and Erro
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Setting Daemon Timing Levels Chapte
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P A R T IX LSF Utilities Contents
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About lstcsh About lstcsh The lstcs
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Local and Remote Modes Local and Re
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Differences from Other Shells Diffe
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Starting lstcsh Starting lstcsh Sta
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Host Redirection Host Redirection E
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Built-in Commands Built-in Commands
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Writing Shell Scripts in lstcsh Wri
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Index job migration 321 job requeue
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Index D daemons authd 496 authentic
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Index file spooling. See command fi
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Index Internet addresses, matching
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Index host locked 279 interactive j
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Index pre-42 UNIX directory structu
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Index disabling 317 job-level 317 q
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Index associating with hosts 155 Bo
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Index status closed in bhosts 70 jo
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Index 580 Administering Platform LS
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