20100421, 16:51  #133  
Jun 2005
3×43 Posts 
Quote:
I'd be extremely happy to be proven wrong, though, so keep us up to date on your progress. Last fiddled with by kjaget on 20100421 at 16:51 

20100423, 02:06  #134 
Apr 2010
3^{3} Posts 
hello, can I first time LL test a 53M exponent with this program?
Thanks. Last fiddled with by odin on 20100423 at 02:13 
20100423, 03:42  #135 
Apr 2010
11011_{2} Posts 
Also can this program utilize all the CUDA cores in a dual GPU card like the GTX 295? Or is it restricted to single GPU cards like the GTX 260?

20100423, 05:56  #136 
Jul 2009
Tokyo
2×5×61 Posts 

20100423, 06:00  #137 
Jul 2009
Tokyo
2×5×61 Posts 

20100423, 06:08  #138 
Jul 2003
So Cal
2×13×79 Posts 
With a dual GPU card, you can run one instance on each GPU. As is, the code runs on GPU 0. Change the cudaSetDevice() call from 0 to 1 and recompile to create a binary that runs on GPU 1.

20100423, 06:21  #139 
Jul 2003
So Cal
2·13·79 Posts 

20100423, 16:29  #140 
Apr 2010
1B_{16} Posts 
Hi thanks for the replies.
Which of the following tests that mprime can run that this program can run: Trial Factoring P1 Factoring First Time LL tests for exponents between 50000000  60000000 range? LL Double Tests. If I want to run a first time LL test to find a prime on let's say exponent 500001000 what is the command? Is it ./MacLucasFFTW 50001000 ? Thanks. 
20100423, 18:36  #141  
"Oliver"
Mar 2005
Germany
2×3×5×37 Posts 
Hi,
Quote:
Oliver 

20100423, 18:37  #142 
"Oliver"
Mar 2005
Germany
2126_{8} Posts 
Maybe msft thought about one test distributed on multiple GPUs?
Last fiddled with by TheJudger on 20100423 at 18:37 
20100423, 21:05  #143  
Apr 2010
33_{8} Posts 
Quote:
Intel I5 750 2.66Ghz overclocked to 3.6Ghz 2GB 1333Mhz DDR3 RAM GIGABYTE GAH55MS2H If MacLucasFFTW can run on the GPU and use only 5% on the CPU then I would like to purchase something like a GTX 295 which is a Dual GPU card and run two instances of MacLucasFFTW on one CPU core and have each instance run on one GPU. At the same time run 4 workers of mprime. What I really want to know is how can I run MacLucasFFTW and give it an exponent to first time LL test which I can manually assign myself from the mprime website? Does this program support something like the worktodo.txt file in mprime to assign an exponent to test? How do I make MacLucasFFTW create checkpoint file regularly like mprime in case my system restarts due to power loss? If MacLucasFFTW finds a prime what would the result look like? Would it place the result in a text file so I could upload it to the mprime website? Have you guys, msft and frmky, checked the power usage of your system? How many watts is it pulling now? Does MacLucasFFTW support SLI? Thanks. 

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