Handle Darshan Data (HarshaD)

George Markomanolis Computational Scientist

KAUST Supercomputing Laboratory georgios.markomanolis@kaust.edu.sa

7 November 2017

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Using Darshan tool

�  Have you ever used Darshan tool? �  If the answer is “I don’t know, probably not”, and you are using Shaheen 2 or Cori, then

maybe you have used it, as it is enabled automatic on Shaheen II and Cori.

�  KAUST Supercomputing Laboratory (KSL) provides a framework to provide you easy access to performance data from Darshan: �  Visit web page https://kaust-ksl.github.io/HArshaD/ for instructions. The framework is

supported on both Shaheen and Cori.

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HArsaD I

�  Connect to Shaheen with –X (for Windows/Linux) or –Y (for Mac)

�  git clone https://github.com/KAUST-KSL/HArshaD.git

�  Get the Darshan performance data from your last experiment, execute: �  ./open_darshan.sh

�  Get the Darshan performance data from the job id 65447, execute: �  ./open_darshan.sh 65447

�  Compare Darshan perfromance data from job id 65447 and 65448, execute: �  ./compare_darshan 65447 65448 �  You need extra tool, check the github link for instructions

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HArshaD II - Comparison

�  In case that you want to compare the execution of two applications, execute: �  compare_darshan.sh job1_id job2_id �  One PDF file, with the Darshan performance data of both executions, is created

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Quantum Espresso – Darshan results I

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Quantum Espresso – Darshan results II

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Quantum Espresso – Darshan results III

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Quantum Espresso – Darshan results IV

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Quantum Espresso – Darshan results V

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Quantum Espresso – Darshan results VI

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S3D – Darshan I

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S3D – Darshan II

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Conclusions

�  A suite of tools to use Darshan without knowing a lot of details was presented

�  Explanations of how to read Darshan output

�  Use the tools! https://kaust-ksl.github.io/HArshaD Provide feedback, we can add possible functionalities

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Thank you! Questions?

georgios.markomanolis@kaust.edu.sa

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