I happened to look at my recent results page and noticed I had two marked as "Validation inconclusive". One each from my two i7's. In both cases it´s partner is an ARM v7 processor. Potential issue here?
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Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.

Eleven hours later, and the two units have been validated for me. I should have noted the unit numbers so I could see what had actually happened, but I didn't.
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Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.

It happens. I currently have one validation inconclusive with an Intel machine (I am on a Ryzen). But we both have a large number of valids, and no invalids.

So I think the validator gets a little particular at times with different chips.

One of the things that struck me was the run times. The ARM systems had at least ten times the run time of my systems, if their results are being dumped, that is serious waste.
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Most ARM processors are much much slower than a desktop PC CPU. And if a result has errors, well, it must be dumped.

Does the ARM version have issues is the point really.
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Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.

No.

I had Rasperri Pi for months awith 100 OK results.

However, is also true, it takes around 48 hours / core to crunch a WU :) Not a problem.

As a comparison, my AMD Ryzen 1700 (8 core/16thread) takes 3 hours and half to complete a WU per thread. And it has 16 thread. Not overclocked. And it is a first generation Ryzen.