Differences

This shows you the differences between two versions of the page.

--- skill-tree:k:4:1:b [2020/06/05 17:06] – external edit 127.0.0.1
+++ skill-tree:k:4:1:b [2020/07/19 11:30] (current) – external edit 127.0.0.1
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-# K4.1-B Introduction to job scheduling
+# K4.1-B Introduction to Job Scheduling
 # Background
-This skill provides an overview into the scheduling of jobs on a supercomputer.
+This skill provides an overview of the scheduling of jobs on a supercomputer.
 It covers generic and widely used concepts that serve the purpose to maximize the efficiency of a supercomputer.
+Batch jobs submitted to a job queue define the workloads in batch systems.
+A workload manager of a cluster system typically deals with:
+  * Job Control to provide a user interface for submitting jobs to job queues, monitoring their state during processing (e.g. to check their estimated starting time), and intervening in their execution (e.g. to abort them manually)
+  * Scheduling and Resource Management to select a waiting job for execution and to allocate nodes to the job meeting all its other demands for computing resources (memory, special processing elements like GPUs, etc.)
+  * Accounting to record historical data about how many computing resources (e.g. computing time) have been consumed by a job
 # Aim
-To enable practitioners to comprehend and describe the basic architecture and concepts of resource allocation for an HPC system
+To enable practitioners to comprehend and describe the basic architecture and concepts of resource allocation for an HPC system.
 # Outcomes
-  * comprehend the exclusive and shared usage model in HPC
+  * Comprehend the exclusive and shared usage model in HPC.
-  * differentiate batch and interactive job submission
+  * Differentiate batch and interactive job submission.
-  * comprehend the generic concepts and architecture of resource manager, scheduler, job and job script
+  * Comprehend the generic concepts and architecture of resource manager, scheduler, job and job script.
-  * explain environment variables as a means to communicate
+  * Explain environment variables as a means to communicate.
-  * comprehend accounting principles
+  * Comprehend accounting principles.
-  * explain the generic steps to run and monitor a single job
+  * Explain the generic steps to run and monitor a single job.
-  * comprehend scheduling principles (first come first served, shortest job first, backfilling) to achieve objectives like minimizing the averaged elapsed program runtimes, and maximizing the utilization of the available HPC resources
+  * Comprehend scheduling principles (first come first served, shortest job first, backfilling) to achieve objectives like minimizing the averaged elapsed program runtimes, and maximizing the utilization of the available HPC resources.
 # Subskills