I was part of GIMPS for a long time until the stack of PCs under my desk
at work started producing too much heat, but I still subscribe to this
list because I enjoy these sort of discussions. I don't understand much
of the maths but I do appreciate the professionalism in the way that
these things are talked about and new topics given space. Maybe the
person in question has found something new, maybe he hasn't but I still
think he deserves to be treated respectfully. After all, there isn't
THAT much traffic on this list that off-topic posts are a problem.

Alasdair

P.S. The first program I ever wrote was a prime number generator in
BASIC on a Commodore PET in 1980, but that's probably off-topic too.



-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Mike McCarty
Sent: 11 June 2008 20:43
To: The Great Internet Mersenne Prime Search list
Subject: Re: [Prime] Ultimate Prime Sieve - Sieve of Zakiya (SoZ)


Jabari Zakiya wrote:
>> Sorry but you don't seem to understand, this stuff is not new to us 
>> here.  Its nice you are finding it for yourself and all but reducing
> your
>> time from 92 minutes to 7 minutes is insignificant when someone 
>> already pointed out to you that a regular old LL test runs in a 
>> fraction of 1
> sec?
> 
> Wew, such attitude........

I hope this one seems more polite and palatable to you.

> 1) Don't be too quick to presume what others don't know.  Like an 
> iceberg, the majority exists below the surface. You must probe to 
> truly know how much there is.

Anyone who could reasonably analyze your algorithm, whatever
it may be, is already intimately aware of sieveing.

> 2) What you may think is interesting/important may not be what is 
> driving me.

Half the time, I'm not sure what MY motives are for doing things, let
alone someone else' motives.

> 3) If you don't think you have anything to learn, then you have alot 
> to learn.

This is certainly true. However, I don't see where he claimed that he
had nothing to learn. However, anyone who is serious about prime
testing/hunting in the large numbers searched by GIMPS knows everything
necessary about sieveing. It isn't even possible to represent the sieve
in a computer in these ranges. Hence, the lack of interest.

>> By the way, just because a test is simple and/or easy doesn't mean it

>> is
> fast.
> 
> Ah, but it doesn't mean that it isn't...........

It can't be fast if it can't be run at all, which, I think,
is the point. The subject matter here is GIMPS. Since a
sieve just isn't feasible in the range GIMPS is exploring,
a sieve is actually pretty much off topic. THAT is the
reason for lack of interest. It isn't that what you have
might not be interesting elsewhere, it just isn't a matter
of interest to GIMPS afficionados.[*]

I don't mean "of no interest at all", but I mean "when
posting here". It's possible that there are many afficionados who would
be interested in a variety of topics. I, for example, repair and restore
to operation vintage tube (valve) radios. I participate in a couple of
mail echoes which are devoted to these subjects. I do not, however, wish
to see posts about those topics in this echo.

If you got really interested in knitting by hand, and found a way to
speed up knitting by hand twofold or threefold over the usual ways, and
posted a message about it on an appropriate forum, you'd probably
generate a lot of interest. If you posted it here, you'd find a lack of
interest. Not because your discovery was not noteworthy, but because the
people who collect here have a common interest in large primes, not
knitting, though you might find one or two who have some interest in it.

Likewise, since a sieve is an inappropriate method for searching for
large primes, you find a corresponding lack of interest.

That is not a comment on the noteworthiness of your discovery, but
rather on its topicality in this mail echo. It's not much more on topic
than a post about hand knitting.

If you can find a list, echo, newsgroup, or web forum which
has as its topic of interest speeding up algorithms for finding small
primes, or just algorithmic analysis, or something like that, and posted
there, you would likely find more interest.

In the meantime, it seems to me that you are simply posting
off topic. The moderator will make any decisions, of course.

[*] Now, if you found a way to represent a sieve on a computer which
would work in the ranges GIMPS explores, that WOULD be ground breaking
news interesting to people here, simply because no one has ever figured
out how to do such a thing. However, that doesn't seem to be what you
claim. The interest might be somewhat fading, however, unless the speed
could also compete with currently used techniques, which seems unlikely.

Mike
-- 
p="p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);}
Oppose globalization and One World Governments like the UN. This message
made from 100% recycled bits. You have found the bank of Larn. I can
explain it for you, but I can't understand it for you. I speak only for
myself, and I am unanimous in that!
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