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Old 2010-01-19, 12:56   #1
Raman
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Default Reserving numbers in advance

Quote:
Originally Posted by bdodson
Actually, one of the primary interests of the Batalov+Dodson
project is to clear the remaining numbers of difficulty below
250, leaving only hard quartics. We have a few more wanted
numbers and first five holes left to clear from our previous
reservation (the 3rd round, seven numbers each) before taking
the next bunch. Perhaps you might consider reserving a few
yourself, in advance. -Bruce
It seems that NFS@Home, Batalov+Dodson are having plenty of resources,
and reserving many numbers in advance. I am worried that they might take
some numbers that I am planning to do during the subsequent weeks. So, I
thought whether I would consider reserving some numbers in advance.
The numbers that I plan to do after 2,935- and 6,355- are
3,575+ 6,355+ 10,275+ 11,265-
There are many other similar sized quartics left over to do for others, mostly in LM tables,
but I intend to crack the first few holes immediately.

After that I plan to do (if still available)
3,580+ 5,400+ 7,335- 6,365- 12,265+ 5,410+ 7,340+ 2,955+ 5,415+

The adjacent numbers with sextics are much easier, but I prefer to do the quartics first
3,581+ 12,266+ 10,363- 10,366+ 10,363+ 2,1862L 2,1862M

People with small resources can do so with
7,393+ 7,396+

I have an average of 25 Core2Duo computers running per day right now,
plus another 55 cores within the compute cluster.
NFS@Home seems to have 100 times as much as computing power as me.
Expecting factors of 10,351+ on Friday morning (Thursday night by your
time zone). I am thinking of automating tasks in Linux by using simple shell
script directed by using crontab.

Dr. Silverman might want to reserve in advance
2,1179+ 2,1191- 2,1191+ after 2,1161+ and then 2,1167-?

Last fiddled with by Raman on 2010-01-19 at 13:17
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Old 2010-01-19, 13:09   #2
R.D. Silverman
 
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Quote:
Originally Posted by Raman View Post
Dr. Silverman might want to reserve in advance
2,1179+ 2,1191- 2,1191+ after 2,1161+ and then 2,1167-?
I don't reserve numbers more than about 2 months in advance.
(i.e. not more than 2 numbers at a time)

I currently have about 15 cores running half time,
plus 3 machines running full time. This is not a lot of
resources.

2,1161+ is about 1/3 sieved.

I do plan on doing the others, but I will not reserve them.
I am not selfish.
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Old 2010-01-19, 15:15   #3
bdodson
 
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Quote:
Originally Posted by Raman View Post
It seems that NFS@Home, Batalov+Dodson are having plenty of resources,
and reserving many numbers in advance. ...
The NFS@Home reservations are in separate queues, numbers for the
15e siever, and for the 16e siever. There's just one number in the
16e siever's queue that's not already sieving or in postprocessing; and
just two in the 15e siever's queue "not yet running". Likewise, the
current Batalov+Dodson numbers represent different areas of attention.
We have a gnfs (in linear algebra) and two not-so-difficult snfs's running
(one in linear algebra, the other sieving). That leaves just three
not-so-difficult snfs's and one more difficult one.

No quartics. -bd
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Old 2010-01-19, 18:25   #4
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Raman, your (albeit unauthorized) resources are fairly small. It is easy to see that you don't have a good estimate for the time necessary for quartics of SNFS difficulty 230, so it would be a good idea to reserve in small portions. There's a lot of people who do not read this forum, so any reservations can be done only with Sam, ok?

You don't have anything to fear from NFS @ Home (or B+D). Their numbers need 10-100 times more time or resources than you have.
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Old 2010-01-19, 19:06   #5
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The only "quartic" that I have my eye on for NFS@Home is 2,980+, and that's only because it is better done as a sextic.
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Old 2010-01-19, 19:50   #6
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Quote:
Originally Posted by Raman View Post
None of the other students, or administration know about my programs, or have any need to know about that.
Did I read this right?
It's a dangerous position.
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Old 2010-01-19, 20:49   #7
R.D. Silverman
 
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Quote:
Originally Posted by frmky View Post
The only "quartic" that I have my eye on for NFS@Home is 2,980+, and that's only because it is better done as a sextic.
NO! it is best done by GNFS!!!!
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Old 2010-01-19, 20:50   #8
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Quote:
Originally Posted by Batalov View Post
Did I read this right?
It's a dangerous position.

Yep!
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Old 2010-01-19, 20:51   #9
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Quote:
Originally Posted by Batalov View Post
Raman, your (albeit unauthorized) resources are fairly small. It is easy to see that you don't have a good estimate for the time necessary for quartics of SNFS difficulty 230, so it would be a good idea to reserve in small portions. There's a lot of people who do not read this forum, so any reservations can be done only with Sam, ok?

You don't have anything to fear from NFS @ Home (or B+D). Their numbers need 10-100 times more time or resources than you have.

I don't know how he will handle the matrices either......
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Old 2010-01-20, 00:00   #10
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Quote:
Originally Posted by R.D. Silverman View Post
NO! it is best done by GNFS!!!!
Yep, you're right. It's far enough out that I hadn't yet checked.
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Old 2010-01-20, 06:17   #11
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Quote:
Originally Posted by R.D. Silverman View Post
I don't reserve numbers more than about 2 months in advance.
(i.e. not more than 2 numbers at a time)
...
I do plan on doing the others, but I will not reserve them.
I am not selfish.
During Nov+Dec NFS@Home factored 15 numbers. There are
currently 16 numbers reserved by NFS@Home (three not yet
started, three late in linear algebra). That might suggest that
the NFS@Home reservation is proportional to Bob's two month
supply.

As reported above, the B+D reservation is substantially diverse.
Our collection of remaining "conveyer numbers" (snfs of diff in the
240's to mid 250's) is below a two month suply, judging by factors
submitted on recent pages. The other two represent our current
challenge numbers; our record gnfs (c180 following c174) and
near record snfs (among B+D numbers).

I'm seeing six numbers on Sam's reservation page marked for Raman,
but two of them are finishing this week? -Bruce
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