Hello,
if that what you describe is the problem the solution is obvious
If a client checked out an (set of) exponent(s) and has not returned it yet
just re-assign that same (set of) exponent(s).
It could also be that some user does this on purpose for instance someone
with
5 machines behind a firewall that cannot contact primenet directly, have one
machine
grabbing the exponents, and distribute the worktodo files by hand to
different
machines + copy back the prime.spl files to the machine with internet
connectivity.
Or have a not so good naming scheme for the machines (as in all machines
have the same name)
Although I must say some hundred assignments would normally do in these
cases.
> -----Oorspronkelijk bericht-----
> Van: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]Namens Nathan Russell
> Verzonden: woensdag 11 april 2001 5:25
> Aan: [EMAIL PROTECTED]
> Onderwerp: Mersenne: PrimeNet vulnerable to client misconfiguration?
>
>
> I just checked the PrimeNet status page out of curiousity, to find
> that only two 10M-digit numbers are available. When I looked at the
> work completed figures, it became rather obvious that one particular
> user is running machines that are severely misconfigured. I don't
> think this is deliberate abuse, since the user does have several
> machines running a few dozen exponents with nothing apparently wrong
> with them.
>
> However, the sheer number of assignments involved speaks for itself.
>
> yeager {~} > cat status.txt | grep netconx | wc -l
> 2292
>
> What I can't help wondering is whether GIMPS should have some
> restriction on how many assignments can be checked out by a given
> machine per unit time - in this case, the assignments in question are
> being run by only two machines, which appear to be repeatedly losing
> track of the work assigned to them. One likely possibility is some
> sort of automated program that is repeatedly deleting or blanking the
> worktodo.ini file.
>
> Perhaps there should be hard limit, after which the user is given an
> error or sent an email telling them of the situation?
>
> In this case, there are enough exponents involved to take a top-end
> system multiple centuries to complete, and there's no reason why that
> should happen without someone contacting PrimeNet to make special
> arrangments, if for no other reason than to always have work available
> for everyone.
>
> Nathan
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