Administering Platform LSF - SAS

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

Handling Host-level Job Exceptions Handling Host-level Job Exceptions eadmin script You can configure hosts so that LSF detects exceptional conditions while jobs are running, and take appropriate action automatically. You can customize what exceptions are detected, and the corresponding actions. By default, LSF does not detect any exceptions. When an exception is detected, LSF takes appropriate action by running the script LSF_SERVERDIR/eadmin on the master host. You can customize eadmin to suit the requirements of your site. For example, eadmin could find out the owner of the problem jobs and use bstop -u to stop all jobs that belong to the user. Host exceptions LSF can detect Default eadmin actions If you configure exception handling, LSF can detect jobs that exit repeatedly on a host. The host can still be available to accept jobs, but some other problem prevents the jobs from running. Typically jobs dispatched to such “black hole”, or “job-eating” hosts exit abnormally. LSF monitors the job exit rate for hosts, and closes the host if the rate exceeds a threshold you configure (EXIT_RATE in lsb.hosts). By default, LSF invokes eadmin if the job exit rate for a host remains above the configured threshold for longer than 10 minutes. Use JOB_EXIT_RATE_DURATION in lsb.params to change how frequently LSF checks the job exit rate. LSF closes the host and sends email to the LSF administrator. The email contains the host name, job exit rate for the host, and other host information. The message eadmin: JOB EXIT THRESHOLD EXCEEDED is attached to the closed host event in lsb.events, and displayed by badmin hist and badmin hhist. Only one email is sent for host exceptions. Configuring host exception handling lsb.hosts) EXIT_RATE Specifies a threshold for exited jobs. If the job exit rate is exceeded for 10 minutes or the period specified by JOB_EXIT_RATE_DURATION, LSF invokes eadmin to trigger a host exception. Example The following Host section defines a job exit rate of 20 jobs per minute for all hosts: Begin Host HOST_NAME MXJ EXIT_RATE # Keywords Default ! 20 End Host 96 Administering Platform LSF
Chapter 4 Working with Hosts Configuring thresholds for exception handling JOB_EXIT_RATE_DURATION (lsb.params) By default, LSF checks the number of exited jobs every 10 minutes. Use JOB_EXIT_RATE_DURATION in lsb.params to change this default. Tuning Example Tune JOB_EXIT_RATE_DURATION carefully. Shorter values may raise false alarms, longer values may not trigger exceptions frequently enough. In the diagram, the job exit rate of hostA exceeds the configured threshold. LSF monitors hostA from time t1 to time t2 (t2=t1 + JOB_EXIT_RATE_DURATION in lsb.params). At t2, the exit rate is still high, and a host exception is detected. At t3 (EADMIN_TRIGGER_DURATION in lsb.params), LSF invokes eadmin and the host exception is handled. By default, LSF closes hostA and sends email to the LSF administrator. Since hostA is closed and cannot accept any new jobs, the exit rate drops quickly. Administering Platform LSF 97
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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
Page 45 and 46: Chapter 2 How the System Works Queu
Page 47 and 48: Chapter 2 How the System Works Disp
Page 49 and 50: Job Execution Environment Shared us
Page 51 and 52: Fault Tolerance Dynamic master host
Page 53: P A R T I Managing Your Cluster Con
Page 56 and 57: Viewing Cluster Information Viewing
Page 58 and 59: Default Directory Structures Defaul
Page 60 and 61: Default Directory Structures Window
Page 62 and 63: Controlling Daemons Controlling Dae
Page 64 and 65: Controlling mbatchd Controlling mba
Page 66 and 67: Reconfiguring Your Cluster 3 Run ba
Page 68 and 69: Host States Host States Host states
Page 70 and 71: Viewing Host Information Viewing Ho
Page 72 and 73: Viewing Host Information type Viewi
Page 74 and 75: Controlling Hosts Controlling Hosts
Page 76 and 77: Adding a Host Adding a Host Use lsf
Page 78 and 79: Removing a Host Removing a Host CAU
Page 80 and 81: Adding and Removing Hosts Dynamical
Page 82 and 83: Adding and Removing Hosts Dynamical
Page 84 and 85: Adding Host Types and Host Models t
Page 86 and 87: Registering Service Ports NIS or NI
Page 88 and 89: Host Naming Host Naming Network add
Page 90 and 91: Hosts with Multiple Addresses Examp
Page 92 and 93: Host Groups Host Groups Where to us
Page 94 and 95: Tuning CPU Factors Tuning CPU Facto
Page 98 and 99: Handling Host-level Job Exceptions
Page 100 and 101: Queue States Queue States Queue sta
Page 102 and 103: Viewing Queue Information SCHEDULIN
Page 104 and 105: Controlling Queues Controlling Queu
Page 106 and 107: Controlling Queues Dispatch Windows
Page 108 and 109: Managing Queues Managing Queues Res
Page 110 and 111: Handling Job Exceptions Configuring
Page 112 and 113: Job States Job States The bjobs com
Page 114 and 115: Job States Viewing wait status and
Page 116 and 117: Viewing Job Information Viewing exc
Page 118 and 119: Switching Jobs from One Queue to An
Page 120 and 121: Suspending and Resuming Jobs Suspen
Page 122 and 123: Sending a Signal to a Job Sending a
Page 124 and 125: Using Job Groups Creating a job gro
Page 126 and 127: Using Job Groups % bhist -l 105 You
Page 128 and 129: Viewing User and User Group Informa
Page 130 and 131: About User Groups About User Groups
Page 132 and 133: LSF User Groups LSF User Groups You
Page 134 and 135: LSF User Groups 134 Administering P
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
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Chapter 8 Understanding Resources V
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Chapter 8 Understanding Resources A
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C H A P T E R 9 Adding Resources Co
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Adding New Resources to Your Cluste
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Chapter 9 Adding Resources Configur
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Static Shared Resource Reservation
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Chapter 9 Adding Resources Configur
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Chapter 9 Adding Resources ELIM res
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Modifying a Built-In Load Index Con
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P A R T III Scheduling Policies Con
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Specifying Time Values Specifying T
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Specifying Time Expressions Specify
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Automatic Time-based Configuration
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Deadline Constraint Scheduling Dead
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Exclusive Scheduling 176 Administer
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About Preemptive Scheduling About P
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How Preemptive Scheduling Works Job
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Configuring Preemptive Scheduling Q
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Configuring Preemptive Scheduling 1
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About Resource Requirements About R
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Queue-Level Resource Requirements V
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About Resource Requirement Strings
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Selection String Selection String S
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Order String Order String Syntax De
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Usage String Example rusage[mem=50:
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Span String Span String Syntax A sp
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Same String 200 Administering Platf
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About Fairshare Scheduling About Fa
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User Share Assignments Examples ◆
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Dynamic User Priority Default dynam
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Host Partition Fairshare Host Parti
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Queue-Level User-based Fairshare Qu
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Cross-queue Fairshare bqueues -l al
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Cross-queue Fairshare 3 In all the
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Hierarchical Fairshare Viewing hier
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Queue-based Fairshare Queue-based F
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Configuring Slot Allocation per Que
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Viewing Queue-based Fairshare Alloc
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Typical Slot Allocation Scenarios T
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Typical Slot Allocation Scenarios W
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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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