session6

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Debugging And Profiling HPX Applications

Overview

Previous: Worked 2D Stencil Example

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Topics covered

• Debugging Compile Time Errors
• Debugging Runtime Errors
• Performance Problems

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Revisiting the Stencil

How good does it scale?

Raw Data

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Revisiting the Stencil

How good does it scale?

Raw Data

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Revisiting the Stencil

Improvements

• The importance of Oversubscription
• Having more than one Partition per Locality
• Futurization - Waiting is losing

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Revisiting the Stencil

Influence of Oversubscription

Raw Data

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Revisiting the Stencil

Influence of Oversubscription

Raw Data

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Revisiting the Stencil

How good does it scale now?

Raw Data

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Revisiting the Stencil

How good does it scale now?

Raw Data

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class: center, middle

Next

Resource Management and Performance Issues