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Search: Posts Made By: Peter Nelson
Forum: Information & Answers 2008-11-03, 01:49
Replies: 7
Views: 718
Posted By Peter Nelson
Hi Oleg. I also have a Four socket Xeon MP...

Hi Oleg.

I also have a Four socket Xeon MP machine, with hyperthreading enabled. Thus I also have 8 "virtual" cores.

I'm running the linux 64 bit version, and I also found that the assignment...
Forum: Information & Answers 2008-10-30, 07:07
Replies: 8
Views: 561
Posted By Peter Nelson
Thankyou for your answers. I hope they might...

Thankyou for your answers. I hope they might appear on the account signup page, or get documented elsewhere.


I succeeded in creating a V5 account with the same userID, and notice there is now a...
Forum: Information & Answers 2008-10-30, 06:48
Replies: 8
Views: 561
Posted By Peter Nelson
Question Primenet V4 / V5 usernames

I've been using the V4 server for several years.

Now that GIMPS is migrating to the V5 server we have to create an account on the new server.

In the Register New Account page, we must select a...
Forum: News 2008-09-28, 02:17
Replies: 901
Views: 76,563
Posted By Peter Nelson
BBC news coverage of prime discovery.

Record discovery coverage by BBC:

http://news.bbc.co.uk/1/hi/world/americas/7640183.stm

On BBC website this story is currently number 2 in the "most popular stories right now" list which is...
Forum: Software 2007-03-15, 20:15
Replies: 12
Views: 832
Posted By Peter Nelson
I think you're right (and yes there can be...

I think you're right (and yes there can be shifting).

What I said was that once you had a test with a result "It's a prime" for a VERIFICATION test, it might be advantageous not to use the same...
Forum: Software 2007-03-13, 03:29
Replies: 22
Views: 1,893
Posted By Peter Nelson
Re Google summer of code projects... Well in...

Re Google summer of code projects...

Well in my opinion I think that this project is traditionally focussed on projects with more open style licenses like GPL.

We know there are limitations in...
Forum: Software 2007-03-11, 15:33
Replies: 41
Views: 2,443
Posted By Peter Nelson
P4 3Ghz Northwood results detail

WITH HT *DISABLED* IN BIOS:

[Sun Mar 11 15:17:24 2007]
Compare your results to other computers at http://www.mersenne.org/bench.htm
Intel(R) Pentium(R) 4 CPU 3.00GHz
CPU speed: 2992.66 MHz,...
Forum: Software 2007-03-11, 14:57
Replies: 41
Views: 2,443
Posted By Peter Nelson
I have a single core Northwood Pentium 4 here...

I have a single core Northwood Pentium 4 here which has "hyperthreading" capability running Win XP Pro (and also Suse linux). 8KByte L1, 512KByte L2.

Most of the time I have hyperthreading turned...
Forum: Software 2007-03-11, 14:26
Replies: 12
Views: 832
Posted By Peter Nelson
You can't just choose an arbitrary starting...

You can't just choose an arbitrary starting point.

But, from http://primes.utm.edu/mersenne/

"(It is also possible to start with S(1)=10 and certain other values depending on p.) "

Note that...
Forum: Factoring 2007-03-11, 13:21
Replies: 8
Views: 1,052
Posted By Peter Nelson
Applications of factoring

One of the reasons people would like to be able to factor large products of 2 primes is to break the encryption techniques currently popular for e-commerce etc.

The guy from m-wave systems argued...
Forum: Software 2007-03-11, 13:12
Replies: 4
Views: 601
Posted By Peter Nelson
Hi Jason. Unfortunately mprime uses the...

Hi Jason.

Unfortunately mprime uses the IDENTICAL assembly code that prime95 does, just linked in. The C code around it is for menus and to set up the data and call the fast part. Sorry it would...
Forum: Hardware 2007-03-01, 04:48
Replies: 24
Views: 1,991
Posted By Peter Nelson
IBM already did quantum computing in a lab. ...

IBM already did quantum computing in a lab.

The IBM 4 qubit machine factored 15 into 5 and 3 really useful ROFL.

This D-wave machine is only 16 qubits so still not useful for our size problems....
Forum: Hardware 2007-03-01, 03:36
Replies: 11
Views: 1,197
Posted By Peter Nelson
May I suggest some workarounds: You could...

May I suggest some workarounds:

You could RENT a computer (either at commercial rates or from a friend). You pay them some amount monthly which you do not keep as an asset because it BELONGS to...
Forum: Lounge 2007-01-01, 01:40
Replies: 29
Views: 1,185
Posted By Peter Nelson
Happy New Year from me, also in UK, UTC/GMT...

Happy New Year from me, also in UK, UTC/GMT timezone (hour and a half late).

It's 2007, best wishes to everyone.

As Paul mentioned, there are high winds (including here in the North East of...
Forum: Hardware 2006-12-30, 08:34
Replies: 20
Views: 1,353
Posted By Peter Nelson
Garo wrote "scan is very cheap but has received...

Garo wrote "scan is very cheap but has received terrible feedback when it comes to RMA and stuff. So I have already resolved to stay away from them. I will check out the other site. I was also...
Forum: Hardware 2006-12-30, 07:32
Replies: 13
Views: 1,336
Posted By Peter Nelson
If your intended apps are math related, I would...

If your intended apps are math related, I would spend the extra on a Core2Duo rather than 9xx because of the better FP performance and improved power efficiency. The downside is it will cost you more...
Forum: Lounge 2006-12-25, 05:41
Replies: 17
Views: 1,696
Posted By Peter Nelson
I want to wish everyone "Happy Holidays" however...

I want to wish everyone "Happy Holidays" however you are celebrating, socialising, resting etc. Even to those who are having to work at this time.

And sincere best wishes for a merry Christmas (if...
Forum: Lounge 2006-12-16, 22:40
Replies: 118
Views: 7,866
Posted By Peter Nelson
Arrived safely a couple of days ago, many thanks....

Arrived safely a couple of days ago, many thanks.

Peter
Forum: Hardware 2006-12-08, 14:01
Replies: 25
Views: 2,422
Posted By Peter Nelson
Just a quick post to say user DannyK has written...

Just a quick post to say user DannyK has written to me directly by email.

I hope to gain access to a Clearspeed board to try to compile some maths apps and see how that goes.

I will keep you...
Forum: Puzzles 2006-12-08, 13:19
Replies: 9
Views: 9,504
Posted By Peter Nelson
It was an achievement to be in the qualifiers...

It was an achievement to be in the qualifiers because there were over 12,000 entries to the competition.

Well I became quite proficient at estimating balls in a box with the help of MersenneForum...
Forum: Puzzles 2006-11-29, 06:05
Replies: 46
Views: 1,871
Posted By Peter Nelson
Agreed, it has to keep re-evaluating based on new...

Agreed, it has to keep re-evaluating based on new information as it comes in.

Knowing the target's current direction and speed at each point of evaluation is useful information in making a...
Forum: Puzzles 2006-11-29, 04:15
Replies: 46
Views: 1,871
Posted By Peter Nelson
Mally I don't think this is a very realistic...

Mally I don't think this is a very realistic problem.

The missile and plane speeds are unlikely to remain constant, for example because constant thrust would have more effect on the craft as it...
Forum: Puzzles 2006-11-29, 03:19
Replies: 9
Views: 9,504
Posted By Peter Nelson
Now I will explain my reason for asking..... ...

Now I will explain my reason for asking.....

I have already entered and been sucessful in a competition where we had to estimate the total number of balls in a car, which changed each week over 4...
Forum: Homework Help 2006-11-29, 02:53
Replies: 52
Views: 25,088
Posted By Peter Nelson
If we do indeed treat the problem as a pie or...

If we do indeed treat the problem as a pie or cake, that raises further possibilities.

If we take our knife and instead of holding the blade perpenticular to the surface disc, we can rotate the...
Forum: Puzzles 2006-11-29, 00:22
Replies: 9
Views: 9,504
Posted By Peter Nelson
This thread is the most relevant to my particular...

This thread is the most relevant to my particular question.

http://mathforum.org/library/drmath/view/55181.html

Eventually they get the same results as me (allowing for rounding), just using a...
Showing results 1 to 25 of 529

 
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