Load Balancing

From HPCBugBase

Contents 1 Defect Type Description 2 Entries 3 Advice 4 Symptom 5 Other Findings and Contexts

[edit] Defect Type Description

This defect type is intended to cover performance problems that occur due to improper load balancing. It is currently classified as a sub-type of the Performance defect type.

To achieve good execution performance, it is important that all processors/threads are "working" in parallel. If the tasks are not properly allocated, some processors/threads are blocked while others are working.

[edit] Entries

Defect descriptions:

• Improper Load Balancing in Master Process

[edit] Advice

• Make sure all processors are gworkingh in parallel
• Profiling tool might help

[edit] Symptom

• Poor scalability
• Unbalanced amount of computation
• Load balancing may depend on input data

[edit] Other Findings and Contexts