>
>
> 1. My experience is that it takes substantially longer to reach a
> given depth using multipv. For example, taking a position at random:
> using multipv=1 it takes 40 seconds to reach depth 13; using multipv=4
> it takes 101 seconds to reach depth 13.
>
Could you give the number of nodes per second with various multipv and the
engine you use ?
I know well the code you used by many engines for multipv, so I know what
impact it has. But maybe other engines behave differently (which I don't
understand : sorting scores and lines before an output is marginal).
You can always set multipv=1 manually before analysing.
Pascal
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