Forum: Programming
2011-03-05, 18:04
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Replies: 112
Views: 25,599
Launching many kernels introduces overhead.
...
Launching many kernels introduces overhead.
A quick look at this and a major cause of slowdown is thread starvation. The code above was running something like 3 threads on a block which each...
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Forum: GPU Computing
2011-02-24, 23:26
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Replies: 2,832
Views: 280,416
Looking at this post...
Looking at this post http://forums.nvidia.com/index.php?showtopic=100557
the problem was caused by an invalid SDK version/driver version combo.
Please run mfaktc and post your cuda info as I...
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Forum: GPU Computing
2011-02-23, 08:44
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Replies: 2,832
Views: 280,416
Thanks for your work and the fast reply.
Ok,...
Thanks for your work and the fast reply.
Ok, now the hex string is gone for 216149. Is this correct?
Good thing is 18760031 matches your check file.:smile:
How can I tell if the final result...
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Forum: GPU Computing
2011-02-23, 08:22
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Replies: 2,832
Views: 280,416
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Forum: YAFU
2011-02-11, 21:53
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Replies: 1,276
Views: 138,659
Thank you for your time and effort on this...
Thank you for your time and effort on this project.
I thought the YAFU did a check for a square already. I remember seeing such a check in the source code.
In my own app, which is nowhere on...
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Forum: Math
2011-02-11, 21:06
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Replies: 55
Views: 4,215
There are many time savers.
Let's suppose...
There are many time savers.
Let's suppose we are factoring N, and let f(x)= x+i^2 mod N, with x=[sqrt(n)] ( the first integer larger than the square root of N)
Let suppose to get accumulate...
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Forum: YAFU
2011-02-11, 19:26
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Replies: 1,276
Views: 138,659
Feature request
Also, would it be possible that when the factorization contains multiples of a prime factor the program outputs the exponent instead of the same exponent multiple times?
The problem is say the...
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Forum: YAFU
2011-02-11, 19:19
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Replies: 1,276
Views: 138,659
Factor Bug
Not sure if this has been fixed in the latest version or not. Using 1.22 there is a bug with the factorization of certain numbers.
To reproduce, take N = the square of a Mersenne number larger...
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Forum: GPU Computing
2011-01-03, 05:50
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Replies: 3,497
Views: 408,704
Same issue here... division by zero exception....
Same issue here... division by zero exception. Not sure if it a bug in the program or the fact I hacked the makefile to complie for win32 - the makefile for windows seems to be for x64. In any case...
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Forum: Science & Technology
2010-06-23, 21:56
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Replies: 143
Views: 12,755
Thanks for your response.
The article...
Thanks for your response.
The article referenced suggests that a doubling of the increase in diameter holes in the riser kink from 0.5 to 0.7 to the size of 1 to 1.5 inches would increase the...
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Forum: Science & Technology
2010-06-19, 06:23
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Replies: 143
Views: 12,755
Flow Rate Increases
I am trying to understand the logic for the flow rate estimates given here http://www.theoildrum.com/node/6609
This makes no sense to me. It is conjectured that the increase in flow rate has not...
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Forum: GPU Computing
2010-04-17, 06:48
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Replies: 3,497
Views: 408,704
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Forum: Factoring
2010-04-17, 06:18
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Replies: 632
Views: 65,040
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Forum: Factoring
2010-04-17, 04:17
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Replies: 632
Views: 65,040
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Forum: GPU Computing
2010-04-17, 04:15
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Replies: 19
Views: 5,532
It was the PSU that was the problem. Weird, I...
It was the PSU that was the problem. Weird, I really didn't expect a Graphics card with no power connected to it to stop the PC from booting.
I am running poly selection on a c126 now. :smile:
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Forum: GPU Computing
2010-04-16, 22:06
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Replies: 19
Views: 5,532
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Forum: GPU Computing
2010-04-16, 21:40
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Replies: 19
Views: 5,532
So I got the GTX260 (216 core version) from...
So I got the GTX260 (216 core version) from BestBuy and well let's say I had issues.
If I attach the card to the PCIe 2 x16 slot the computer does not boot, everything turns on but no beep from...
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Forum: Factoring
2010-04-15, 17:41
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Replies: 632
Views: 65,040
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Forum: Msieve
2010-04-14, 20:12
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Replies: 740
Views: 63,246
It's RSA190 -...
It's RSA190 - http://en.wikipedia.org/wiki/RSA_numbers#RSA-190
Edit: By useless, since def-nm-params.txt file only contains parameters up to 155, your saying there is no way to find the polynomial.
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Forum: Msieve
2010-04-14, 18:06
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Replies: 740
Views: 63,246
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Forum: Msieve
2010-04-14, 17:53
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Replies: 740
Views: 63,246
Actually, the first couple of entries are
...
Actually, the first couple of entries are
Sun Apr 04 20:22:53 2010 -> Searching leading coefficients from 1 to 1000
Sun Apr 04 20:22:53 2010 -> pol51m0b -b rsa190.polselstaging1.624 -v -v -p 7...
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Forum: GPU Computing
2010-04-14, 05:45
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Replies: 19
Views: 5,532
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Forum: GPU Computing
2010-04-14, 03:27
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Replies: 19
Views: 5,532
Video Card Recommendations
Hi,
I am looking to purchase a new video card to take advantage of the the latest developments in parallel GPU computing.
I would initially be using it for poly selection with MSIEVE....
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Forum: Factoring
2010-04-12, 18:22
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Replies: 632
Views: 65,040
ECM Benchmarks
William,
Here are the ECM benchmarks I promised you a few hours ago. As I stated up to a certain point running t35 takes the same amount of time (@6 hours) that it takes to run the number...
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Forum: Factoring
2010-04-12, 17:28
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Replies: 632
Views: 65,040
10metreh
Thanks for the link. I will try it...
10metreh
Thanks for the link. I will try it out. I just got MPIR compiled and running not to long ago (I am used to using the ASP.NET wrapper of libgmp but have grown tired of the slow overhead of...
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