[QUOTE=airsquirrels;411475]I keep some freshly imaged bootable flash drives around for just such an occasion. I'm traveling the next few days but when I get back I'll investigate. Who knows maybe I'll find the first 100M prime ;-)[/QUOTE]

:davar55: Maybe you (or me?) didn't understand how the things work. You won't find any prime. There is no feedback of the residue, nor the exponent you are testing, as I understood from the past discussions. So, you do the work, but you are not finding any prime. [B]He[/B] (the craplla author) is finding the prime. And there is no word about splitting the money. :razz:

But you at least give it a try and tell us first hand about the speed and features, to close all the mouths... :wink:

only other thing that came to mind for a possible LL speedup is if we can quickly solve 2^x(+/-)2^y=2^z with logs we can use logarithms and mod by the base 2 log of (2^p-1) ( almost practically p) potentially.

[QUOTE=airsquirrels;411475]I keep some freshly imaged bootable flash drives around for just such an occasion.[/QUOTE]

I know I am telling you how to chew gum (sorry), but jail this thing strongly. Sniff (and record) every byte sent over the wire.

Probably benign, but you never know....

[QUOTE=manfred4;411477]If that is your goal, I really think that running CudaLucas and Prime95 gives you better chances to find them faster ;)
How long has the author not replied? Too long. He recognized that he is not getting the response he thought in this forum.[/QUOTE]

I forgot to add the sarcasm tag. I expect the only thing satisfied here will be curiousity.

[QUOTE=airsquirrels;411436]Similarly the SSH keys can be readily extracted from a memory snapshot of the program to decrypt the traffic....[/QUOTE]

I kind of thought the same, especially given the version of CURL embedded, which I think had a bug that left keys in memory after use. I dumped the process memory at some point and I meant to fire up a debugger to go through it, but lost interest. :smile:

[QUOTE=airsquirrels;411436]...There are areas for improvement but I would be very surprised to see several orders of magnitude as claimed here.[/QUOTE]

I would be interested to see this benchmarked on a 5 GPU system. A basic test of M332220523 and compared to the tests done in this thread would be helpful:
[URL="http://www.mersenneforum.org/showthread.php?t=13185"]http://www.mersenneforum.org/showthread.php?t=13185[/URL]

I think all of us found it a little weird that the OP came on here and announced his program like it was the next great thing, but didn't have any numbers or anything to show. That was the odd part, that he just expected a bunch of folks to "trust me, this thing is awesome" based on his say-so alone.

In short, on a 14-core Xeon E5 v3, I was getting an ETA of 51 days for M332220523 with all 14 cores. If I added more cores on the other CPU, it seemed to peak at around 18 cores = 43 days.

If this program can beat that with 5 GPUs, well, good for it, then we'd just have to look at other factors like system cost, total power usage during that time, etc. I don't imagine a 5 GPU system is cheap, and uses a lot of power. I think the server I tested on was $8-10K. Power, for me, is "free" since we pay a flat rate for each cabinet based on our colo contract, but when running Prime95 with all 28 cores on both CPUs, it's ~ 600W. If I were paying for that at my home rate of about 0.098 USD per KW/H then if I crunched my #'s right it's like $42 USD a month, give or take a buck.

Cost is all relative to time. For example, an avid gamer who is poor with his money and upgrades to the latest and greatest every season just unloaded three Titan's already on EK water blocks for $1200. Add a Titan Z for another $1000 to the mix and you have 5 logical GPUs that will fit in one of my $1500 5930k hosts.

So that's a personal super computer for $3700. Not cheap, but not bad either. It is certainly less than the cost of a pair of nice 2011v3 E5 chips alone. That ignores my existing giant liquid cooling loop, but someone clever and thrifty could improve that enough for a small system like this fairly inexpensively.

If you want to go order this system off the shelf and just plug in power you will pay a lot more.

I should also mention that this system will pull every bit of 1.5kW. Around here that is about $100/month.

[QUOTE=Madpoo;411510]I kind of thought the same, especially given the version of CURL embedded, which I think had a bug that left keys in memory after use. I dumped the process memory at some point and I meant to fire up a debugger to go through it, but lost interest. :smile:



I would be interested to see this benchmarked on a 5 GPU system. A basic test of M332220523 and compared to the tests done in this thread would be helpful:
[URL]http://www.mersenneforum.org/showthread.php?t=13185[/URL]

I think all of us found it a little weird that the OP came on here and announced his program like it was the next great thing, but didn't have any numbers or anything to show. That was the odd part, that he just expected a bunch of folks to "trust me, this thing is awesome" based on his say-so alone.

In short, on a 14-core Xeon E5 v3, I was getting an ETA of 51 days for M332220523 with all 14 cores. If I added more cores on the other CPU, it seemed to peak at around 18 cores = 43 days.

If this program can beat that with 5 GPUs, well, good for it, then we'd just have to look at other factors like system cost, total power usage during that time, etc. I don't imagine a 5 GPU system is cheap, and uses a lot of power. I think the server I tested on was $8-10K. Power, for me, is "free" since we pay a flat rate for each cabinet based on our colo contract, but when running Prime95 with all 28 cores on both CPUs, it's ~ 600W. If I were paying for that at my home rate of about 0.098 USD per KW/H then if I crunched my #'s right it's like $42 USD a month, give or take a buck.[/QUOTE]

I got $43.7472 for a 31 day month when I plugged the math into google. of course that assume 24/7

While traveling I tossed the installer in a VM locked down with no network access. I nop'd the 5 GPU check and the Internet check and installed the full program. Peeking inside, the quality of code and general extreme dependence on open source libraries without a logical reason makes me suspect of any real improvements. I count OpenSSL and CURL alongside several others. Naturally without a cuda GPU it doesn't get very far.

I don't see anything that looks particularly malicious but I have definitely not done a deep forensic dive. Most of the code looks like it is indeed trying to detect normal things (processor instruction support, GPU capabilities, etc.) and doing its best to do an LL test. I don't see signs of any Bitcoin or lite coin algorithms.

I'll give it a little bit more time on an actual machine, but my gut here says good intentioned non-malicious program, no actual improvements over what we have, and an arguably more selfish author - which I won't fault him for.

[QUOTE=science_man_88;411514]I got $43.7472 for a 31 day month when I plugged the math into google. of course that assume 24/7[/QUOTE]

My average month is 30 days. :smile: But also I may as well mention that only my first XX kWh per month are at $0.095 USD and the rest are at $0.011 something. Meaning unless this was the ONLY thing I have running in my house, I will pay more.

Still, the 600W is less than the pump on my water feature that runs all summer, so I guess it comes down to how much you're willing to pay for some things. LOL (and yeah, I'm thinking I need a more efficient pump, or do I really need that many gallons per hour?)

[QUOTE=Madpoo;411530]... kWh per month ... and the rest are at $0.011 something.[/QUOTE]:shock: That is very cheap. Can I connect a cable to your place to power my lair? Please? I'll pay you $0.022 per kWh. You'll make a profit. Okay?

[QUOTE=retina;411531]:shock: That is very cheap. Can I connect a cable to your place to power my lair? Please? I'll pay you $0.022 per kWh. You'll make a profit. Okay?[/QUOTE]

That's because I typo'd... it's $0.11 something. Whoops. Let's just say my average is 10 cents per kWh.

Funny... it used to be less until Washington State started getting rid of all this nice hydro-power we have. There's a hydro plant just a few miles from me that had to shut down a few years back because the regulations made it lose money each year. Meanwhile all the generators and the artificial lake are still here, the water still flows in and out, it just can't be used to power the turbines on it's way to rejoin the river. Lame.