ML21230A358

Lessons Learned - Xlpr Run Optimization

ML21230A358
Person / Time
Issue date:	08/18/2021
From:	NRC/RES/DE
To:
Homiack M
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ML21230A354	List: ML21230A356 ML21230A357 ML21230A358 ML21230A360 ML21230A361 ML21230A363 ML21230A364 ML21230A366
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Download: ML21230A358 (11)

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Lessons Learned - Run Optimization xLPR User Group Meeting August 18, 2021 1

xLPR Use at Structural Integrity Associates (SI)

• Two xLPR projects at SI thus far:

• Dissimilar Metal (DM) Butt Weld Inspection Optimization (Code Case N-770)

• 24 cases, 100k realizations each case

• Linking traditional leak-before-break (LBB) with probabilistic methods

• ~16 cases, 800k realizations each case

• 400k per run

• Efficiency is key to meeting deadlines and maintaining budget!

2

Run Optimization (Brief Recap)

• Primary goals:

• Reduce run time (more runs in a given timeframe)

• Reduce file size (more realizations per run)

• Reduce overhead in making xLPR runs (reduce time between making runs)

• https://www.epri.com/xlpr/announcements/

for videos/presentations 3

Output Settings (1/2)

• Only allow certain outputs to be saved

• Reduce frequency of saved outputs 4

Output Settings (2/2) 5

Distributed Processing

• Allows realizations to be run in parallel across different slave processes

• GoldSim Pro allows 4 slaves, Distributed Processing has no limit (but should only use # of cores - 1)

• Nearly linear improvement in runtimes (twice the slaves means half the run time)

• GSP Slaves can be opened one at a time in the Run utility 6

Desktop Shortcuts and Batch Files (1/3)

• Slaves can also be run as a desktop shortcut 7

Desktop Shortcuts and Batch Files (2/3)

• Target: C:\Program Files (x86)\GTG\GoldSim 11.1\GoldSim.exe -s

• Start in: C:\Program Files (x86)\GTG\GoldSim 11.1 8

Desktop Shortcuts and Batch Files (3/3)

• A batch file can be made to open multiple slave processes instantaneously

• Replace n with number of slaves to open

• Suggest closing and reopening all slaves between larger runs 9

Using Distributed Processing Properly

• Must disable run in separate process

• Class View > External > Double Click each DLL

• Allows each slave to operate independently 10

Demonstration 11