mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 382
Search took 0.06 seconds.
Search: Posts Made By: drew
Forum: Software 2020-09-08, 15:34
Replies: 341
Sticky: Prime95 v30.3
Views: 17,785
Posted By drew
Hi, I just wanted to let you know that I...

Hi, I just wanted to let you know that I downloaded this latest version (30.3 build 4), and now when I run the .exe I get the attached dialog (not sure if the attachment will show up in this post, so...
Forum: PrimeNet 2020-01-06, 06:30
Replies: 7
Views: 848
Posted By drew
Ok thanks. I get the point about trying to...

Ok thanks. I get the point about trying to capture the trailing edge. I'm not worried about being able to complete the work in time, I was just trying to understand what's in the best interest for...
Forum: PrimeNet 2020-01-06, 03:23
Replies: 7
Views: 848
Posted By drew
Worker Windows setting

Hi,

For years, I've set my worker window settings to use Prime95 single-threaded by using 4 worker windows (1 per physical CPU). This optimizes the throughput, as far as I can tell.

For the...
Forum: Software 2016-03-28, 16:51
Replies: 2
Views: 411
Posted By drew
Version 28.7 slower?

Hi,

I just upgraded to version 28.7 of the software. I apologize for not knowing what I had previously. In any case, the LL test I am running (> 100,000,000 digit) is running slower than it did...
Forum: Software 2014-09-03, 05:39
Replies: 2
Views: 332
Posted By drew
Thanks for that. Indeed, my memory was set very...

Thanks for that. Indeed, my memory was set very low (probably the default). I bumped it up to 4096 (I have 16 gB) and the parameters changed.
Forum: Software 2014-09-03, 00:57
Replies: 2
Views: 332
Posted By drew
P-1 B1 and B2 the same?

Hi,

I'm running a large LL test and I noticed that in Stage 1 factoring, it shows B1 and B2 having the same value. Is this normal? I'm wondering if it's one of the following:

1. When it...
Forum: Lounge 2008-09-12, 16:43
Replies: 34
Views: 2,037
Posted By drew
Oh gosh, could you imagine? I'm trying to...

Oh gosh, could you imagine?

I'm trying to visualize the stack of 5 1/4" floppies needed to store the data (since 64k is far short of the 5+ Megabytes required to store the result).

Let's see if...
Forum: Homework Help 2008-09-11, 07:35
Replies: 12
Views: 1,821
Posted By drew
FWIW, ap-1 for any prime a != 2 is an even number...

FWIW, ap-1 for any prime a != 2 is an even number and therefore not prime.
Forum: News 2008-09-09, 16:36
Replies: 901
Views: 74,321
Posted By drew
The potential $50,000 award is no doubt an...

The potential $50,000 award is no doubt an incentive for many of the people who run GIMPS. You can look at it as a raffle where the ticket price is the cost of the electricity and the CPU usage that...
Forum: Software 2008-09-04, 16:35
Replies: 63
Views: 5,440
Posted By drew
That's much easier. The exponent just needs to...

That's much easier. The exponent just needs to be greater than 33219281.
Forum: Software 2008-09-04, 15:57
Replies: 63
Views: 5,440
Posted By drew
Why would anyone *need* to know how many decimal...

Why would anyone *need* to know how many decimal digits the number has? Decimal representation is very inconvenient for computational purposes, and these numbers are much too big for the human mind...
Forum: Software 2008-09-03, 06:52
Replies: 63
Views: 5,440
Posted By drew
What about those of us who already know how to...

What about those of us who already know how to perform the calculation? Should we not use software to make it simpler for us? Should I derive my own logarithm tables myself?
Forum: Hardware 2008-07-26, 03:50
Replies: 12
Views: 895
Posted By drew
The new memory made a huge difference. Getting...

The new memory made a huge difference. Getting iteration times of 0.064 now.

Thanks again for your help.

Drew
Forum: Hardware 2008-07-20, 08:40
Replies: 12
Views: 895
Posted By drew
Ok, I just want to give an update: I changed...

Ok, I just want to give an update:

I changed my FSB to run at 400 MHz instead of 333 to make use of the 800 MHz memory speed, and shortened the latencies from 5-5-5-15 to 4-4-4-12, then reduced...
Forum: Hardware 2008-07-15, 14:52
Replies: 12
Views: 895
Posted By drew
Right now I'm running 4 tests, 2 LL tests and 2...

Right now I'm running 4 tests, 2 LL tests and 2 P-1 stage 1 tests using version 25.6 of Prime95. The memory is 800 MHz DDR2 RAM. The motherboard uses an Intel P35 chipset.

I assumed the memory...
Forum: Hardware 2008-07-15, 06:10
Replies: 12
Views: 895
Posted By drew
LL test doesn't match benchmark

I just got a new Intel Q9450 Core 2 Quad processor. When I began running Prime95 with a test that has FFT length 2560, it shows a per iteration time of about 100 ms.

The benchmark page shows 56.9...
Forum: PrimeNet 2008-06-13, 04:57
Replies: 382
Views: 68,339
Posted By drew
Yes it was...that's the first thing I checked. ...

Yes it was...that's the first thing I checked.

However, I'm not seeing it now, either. I changed my memory allocation, and after the associated messages appeared, things went back in sync, and it...
Forum: PrimeNet 2008-06-12, 22:57
Replies: 382
Views: 68,339
Posted By drew
I'm seeing an 'off by one' error in the display...

I'm seeing an 'off by one' error in the display of the status of thread 1.

For instance, I have two threads running right now, both running P-1 factoring because I just installed Prime95 on this...
Forum: Hardware 2008-06-09, 04:21
Replies: 22
Views: 1,715
Posted By drew
I've heard that a surprisingly large percentage...

I've heard that a surprisingly large percentage (I forget the number...about 40% if I were to guess) of Windows' crashes are related to NVIDIA video cards and their drivers.

Edit: I've found the...
Forum: Software 2008-06-02, 05:30
Replies: 9
Views: 599
Posted By drew
I have a hypothesis as to what's happening after...

I have a hypothesis as to what's happening after reading that thread.

Somehow an 'r' file got created before the 'p' and 'q' files were written to the "VirtualStore" directory. And because the...
Forum: Software 2008-06-02, 04:59
Replies: 9
Views: 599
Posted By drew
The file is not read-only...it looks like it's...

The file is not read-only...it looks like it's getting written to, just not read (I suspect the 'p' and 'q' files are getting read each time but the 'r' file is being written).

Your link's not...
Forum: Software 2008-06-01, 20:00
Replies: 9
Views: 599
Posted By drew
Yes, this is where the files are being updated. ...

Yes, this is where the files are being updated.

The test that's working has 2 save files called p6G14717 and q6G14717.

The test that is not working has a save file called r6H93701. I don't...
Forum: Software 2008-06-01, 18:46
Replies: 9
Views: 599
Posted By drew
I'll upgrade to version 25.6d and see if that...

I'll upgrade to version 25.6d and see if that fixes things.

I had noticed that the directory was read only (but not the files) before posting this problem, but even after I made it writeable, the...
Forum: Software 2008-06-01, 02:37
Replies: 9
Views: 599
Posted By drew
Save files, Vista and version 25.3

Hi,

I'm using version 25.3 with Windows Vista. I know it's an experimental version but from what I understand, I can't revert the tests that are in-progress to version 24.

In any case, my...
Forum: Puzzles 2008-04-06, 07:51
Replies: 6
Views: 707
Posted By drew
I don't believe shuffling algorithms are...

I don't believe shuffling algorithms are appropriate, as most assume M=N and operate in an M-sized memory space. And I don't think you care about the order of the N-sized set, right?

I think the...
Showing results 1 to 25 of 382

 
All times are UTC. The time now is 19:18.

Sat Sep 26 19:18:44 UTC 2020 up 16 days, 16:29, 1 user, load averages: 1.79, 1.72, 1.71

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.