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Search: Posts Made By: Brain
Forum: PrimeNet 2017-02-24, 06:57
Replies: 71
Views: 11,113
Posted By Brain
Tnx to Madpoo

Thanks a lot for all your work and improvements, finder of the great M49, ruler of the DB. :bow:
Forum: PrimeNet 2017-02-23, 21:59
Replies: 71
Views: 11,113
Posted By Brain
I am still using it and it has broken: ...

I am still using it and it has broken:
20170223_215245 INFO: Submission spider starting...
20170223_215245 INFO: Attempting to log into PrimeNet. This can take a little while...
20170223_215245...
Forum: Marin's Mersenne-aries 2016-04-11, 05:01
Replies: 1,841
Views: 97,432
Posted By Brain
48000619 - Verified?

Sorry if I'm in the wrong thread but is 48000619 (http://www.mersenne.org/report_exponent/?exp_lo=48000619&full=1) really verified as it says?
I did 2 tests on my own, Titan 1 and Titan 2. 1x with...
Forum: GPU Computing 2016-03-25, 10:53
Replies: 30
Views: 6,078
Posted By Brain
Titan's Best Choice

I'd like to exchange experiences with the (classic) Nvidia GTX Titan (GK110): Hardware settings only.
I'm trying to get an overview of the best stable setting for running CUDALucas, mainly for the...
Forum: GPU Computing 2016-02-19, 06:30
Replies: 13
Views: 3,007
Posted By Brain
cufftbench

Quick runs with 6.5 / 7.5, may need more samples

6.5:
CUDALucas2.05.1-CUDA6.5-Windows-x64.exe -cufftbench 4096 8192 2
Device GeForce GTX TITAN
Compatibility 3.5
clockRate...
Forum: GPU Computing 2016-02-19, 05:53
Replies: 13
Views: 3,007
Posted By Brain
Myself, via worktodo: ...,5184K Device ...

Myself, via worktodo: ...,5184K
Device GeForce GTX TITAN
Compatibility 3.5
clockRate (MHz) 875
memClockRate (MHz) 2600

fft max exp ms/iter
4096 75846319 ...
Forum: GPU Computing 2016-02-18, 23:08
Replies: 13
Views: 3,007
Posted By Brain
Just for experimental purpose: CL with CUDA 7.5 for Win64

I have compiled "cudalucas-code-99-trunk" with CUDA 7.5 for Win64.

HowTo compile CUDALucas for Win64, additional info to README:


Have Win7/8/10 64bit
Install Nvidia GPU Toolkit (e.g....
Forum: GPU Computing 2016-02-18, 07:23
Replies: 13
Views: 3,007
Posted By Brain
DIY

Old Version from 2012 (out-dated):

The upper HowTo from 2012 is out-dated. I will probably soon setup a new Windows Make environment - this is one current way, Taken from CUDALucas README.txt:...
Forum: GPU Computing 2016-02-16, 22:50
Replies: 13
Views: 3,007
Posted By Brain
Could you post a CUDA 7.5 binary? Win64, CC 3.5?...

Could you post a CUDA 7.5 binary? Win64, CC 3.5? ;-)
Forum: GPU Computing 2016-02-16, 22:45
Replies: 13
Views: 3,007
Posted By Brain
CUDALucas / cuFFT Performance on CUDA 7 / 7.5 / 8

Hi folks,

I am running CUDALucas compiled against CUDA 6.5. (download from here: https://sourceforge.net/projects/cudalucas/files/ ).
I use 2 Titans (Kepler, GK110, CC 3.5).

Question is: Will...
Forum: GPU Computing 2016-02-02, 20:45
Replies: 2,817
Views: 217,291
Posted By Brain
When testing my first Titan I couldn't run CL...

When testing my first Titan I couldn't run CL without wrong residues. Another user found out that downclocking the memory clock solves the problem. I'm successfully running for several years now on...
Forum: Hardware 2016-01-16, 14:03
Replies: 3
Views: 387
Posted By Brain
Power Supply or RAM

If it has always been stable before and does now fail without any change I would think of the power supply. I had a stable system which suddenly started with sporadic errors shown in Prime95. This...
Forum: Hardware 2015-11-23, 20:11
Replies: 16
Views: 2,133
Posted By Brain
Cool Today, I got confirmation from Gainward that my...

Today, I got confirmation from Gainward that my assumption was correct.
Please dont't start a Windows 10 thread but this fantastic piece of software said that my PC was all compatible - after 3...
Forum: Hardware 2015-11-22, 12:42
Replies: 16
Views: 2,133
Posted By Brain
Wink All good

Ehmm, I'm not directly looking for a solution/help. (But: If you have one, tell us.) As far as I have understood it there is no solution by design and/or Nvidia is not interested in doing something....
Forum: Hardware 2015-11-22, 09:11
Replies: 16
Views: 2,133
Posted By Brain
Angry Pitfall when upgrading to Windows 10 with Fermi vs Kepler/Maxwell

Hello everyone,

I write to you to confirm my investigestions:

Preconditions:
2 NVIDIA cards installed
1: Nvidia GTX Titan - Kepler - GK100 chip
2: Nividia GTX 560 Ti 448 Cores - Fermi...
Forum: GPU Computing 2015-10-25, 15:39
Replies: 20
Views: 3,163
Posted By Brain
GPU Computing Cheat Sheet 1.1.0

Find attached
GPU Computing Cheat Sheet 1.1.0
(http://www.mersenneforum.org/attachments/pdfs/GIMPS_GPU_Computing_Cheat_Sheet.pdf)
Change history for 1.1.0:


mfaktc 0.21, mfacto 0.14,...
Forum: GPU Computing 2013-05-08, 05:28
Replies: 27
Views: 3,340
Posted By Brain
Double Precision

http://www.hardwareluxx.de/images/stories/galleries/reviews/2013/geforce-titan/cuda-dp-activation-rs.jpg
See bottom for explanation: "Beschreibung". "Enables more..."
Good for CUDALucas...
Forum: GPU Computing 2013-03-16, 16:57
Replies: 295
Views: 21,737
Posted By Brain
Nothing with regard to CUDA !?! ...

Nothing with regard to CUDA !?!
http://us.download.nvidia.com/Windows/314.21/314.21-win8-win7-winvista-desktop-release-notes.pdf
Forum: GPU Computing 2013-03-16, 16:27
Replies: 295
Views: 21,737
Posted By Brain
Efficiency table: FFT length and Titan

Okay, here a very first result file. Windows/Excel CSV format, no comments please. ;-)
Sorted descending by efficiency. Single cufftbench run on my Titan. Only 1M-16M fft length.
I will do more...
Forum: GPU Computing 2013-03-14, 21:48
Replies: 2,817
Views: 217,291
Posted By Brain
I think Aaronhaviland did this with the...

I think Aaronhaviland did this with the cufftbench option.
I will do the same and normalize the timings by FFT length / time.
Raw data that will be used can be found in this Titan's thread post...
Forum: GPU Computing 2013-03-14, 21:42
Replies: 295
Views: 21,737
Posted By Brain
Efficient FFT length

In preparation for a new table with efficient FFT lengths I ran the CUDALucas cufftbench on a 810MHz/2500MHz Titan. It's the raw output I will process and filter the next days. Remind that the bench...
Forum: GPU Computing 2013-03-14, 19:32
Replies: 295
Views: 21,737
Posted By Brain
100M

2500MHz VRAM = 2070h:
E:\Eigene Dateien\Computing\CUDALucas\2.03\D0>CUDALucas-2.03-5.0-sm_35-x64.exe -threads 512 -f 20971520 -t 332192831
Warning: No ini file detected. Using defaults for...
Forum: GPU Computing 2013-03-13, 21:07
Replies: 2,817
Views: 217,291
Posted By Brain
Efficiency formula

I'd like to have a formula that computes an efficiency score between 0 and 100% for a given FFT length like Aaron did. Any suggestions? Aaron, can you post yours?
Thoughts:
- measure FFT lengths...
Forum: GPU Computing 2013-03-12, 21:17
Replies: 748
Views: 60,791
Posted By Brain
No Windows compile

I cannot compile for Windows for at least 2 reasons:
- #include <gmp.h> fails. Changed to "gmp.h" but I have no Windows GMP library, only the header file gmp.h
- #include <cuda_safecalls.h> fails...
Forum: GPU to 72 2013-03-12, 06:27
Replies: 25
Views: 2,179
Posted By Brain
rofl

Saved my day. :missingteeth:
Showing results 1 to 25 of 331

 
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