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Equity Disparities

Posted By: christian munk-christensen
Date: Friday, 22 November 2024, at 12:55 p.m.

In Response To: Equity Disparities (Nack Ballard)

If you are running XG on multiple processor cores, then there can be variations in the analysis results and it will not be possible to consistently reproduce analysis results.

Don't ask me why.

But a fix is known:

If you set XG to only run on one processor core, then it will off course run slower, but at least it will spit out the same result every time for a given position.

The same applies for analysing matches: For practical/speed purposes I have set my XG to draw on all the cores which my processor offers, and 9/10 times I get different PR results for a match compared to my opponent, even though we are analysing using the same XG settings. I have seen PRs vary something like +/- 0,15.

I believe Chris Yep did some work to understand this one-core vs multiple cores phenomenon.

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