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Bill Allombert on Tue, 08 Aug 2023 11:23:53 +0200
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Re: Partial ECPP certificates
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- To: pari-users@pari.math.u-bordeaux.fr
- Subject: Re: Partial ECPP certificates
- From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Date: Tue, 8 Aug 2023 11:19:06 +0200
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- In-reply-to: <ZNH2yNcTsuX10FVW@jurong>
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On Tue, Aug 08, 2023 at 10:03:20AM +0200, Andreas Enge wrote:
> Hello,
>
> someone using my CM code to create ECPP certificates was wondering whether
> there was an error somewhere in the middle of the as yet unfinished
> computation. I considered using GP and primecertisvalid, but the only
> output is a 0 or a 1, even when cranking up the debug level.
>
> So I am wondering whether you would consider adding more information to
> the output to distinguish between a correct, but only partial certificate
> and a real mistake. One possibility would be an optional flag "partial"
> with default 0; if set to 1, primecertisvalid would return 1 for a
> correct partial certificate. I think this would be well in line with the
> option to create partial certificates by primecert.
>
> And/or higher debug levels could output some information on the different
> steps and print in which certificate entry there is an error.
>
> I also noticed that primecert will happily "complete" a partial
> certificate with an error in it. This is a valid choice ("garbage in,
> garbage out"), but it would be more convincing if a means of checking
> a partial certificate were implemented.
It is a lot of work to implement and document correctly, without having a negative
impact on primecertisvalid, but if you are interested in giving it a try!
Cheers,
--
Bill Allombert
Ingénieur de recherche en calcul scientifique ❄
CNRS/IMB UMR 5251