LLRnet server rally 400<k<1001 August 8-10

[gd_barnes]

Speaking of borging...I just borged MYSELF. lol

By that I mean, I knew I had to spend several hours trying to figure out why one of my Linux quads would not connect to the internet. I finally found the time tonight and got it fixed and yes it took 2+ hours to figure it out. Unfortunately it wasn't a simple connection issue. So the borging was of my personal time.

Therefore, I've now officially stopped all other efforts and have almost everything I own on IB400 for the rally: 6 quads plus 2 desktop cores plus 2 of my kid's laptop cores...24 fast and 4 slower cores. (post 1 here updated)

The exception is my stupid Athlon laptop that at the end of my last business trip started refusing to come on. I'm having a friend come over Monday or Tuesday to look at it. It seems like its always something with these machines!


Gary

[em99010pepe]

Originally Posted by gd_barnes

(?) on port 443 (I'm not sure if Carlos is working on the rally)

Sorry but I'm off the rally.

[Mini-Geek]

Originally Posted by Anonymous

Speaking of borging, I will most probably be able to borg a brand-new Intel Q6600 quad-core sometime within the next month or so. I know I've had various false alarms in the past as to potential borging prospects, but I think this one's for real. (I know, probably now that I said that it will fall through... )

I know, not in time for this rally, but hopefully for the next.

I hope that goes well.
I took the two I borged offline, my family doesn't like prime searching. Oh well, together they probably only equaled about one core at my main CPU's speed...

[em99010pepe]

Just to tell that C443 has lots of activity, 195 results returned in 24 hours!!!! lol

[Lennart]

I think i need some more pairs ! 528k-529432 done !


/Lennart

[mdettweiler]

Originally Posted by em99010pepe

Just to tell that C443 has lots of activity, 195 results returned in 24 hours!!!! lol

That would be me, I've got one core on C443. 195 results sounds like roughly what one of my cores would produce in 24 hours.

[mdettweiler]

Originally Posted by Lennart

I think i need some more pairs ! 528k-529432 done !


/Lennart

Holy cow! I'll get another n=2K range sent your way pronto.

Edit: I've sent you the range 532K-534K.

[gd_barnes]

Originally Posted by Lennart

I think i need some more pairs ! 528k-529432 done !


/Lennart

Weeeeeeee! Those must be some speedy machines if you have only 40 cores on it. With 24 fast cores, I'm only able to push n=~450/day or n=~1K total for the rally including a few slower cores and a couple of others on the same port.

[mdettweiler]

Originally Posted by gd_barnes

Weeeeeeee! Those must be some speedy machines if you have only 40 cores on it. With 24 fast cores, I'm only able to push n=~450/day or n=~1K total for the rally including a few slower cores and a couple of others on the same port.

Hmm...Gary, I think you might possibly have an issue with the CPU incorrectly staying in power-saving mode on your machines. As far as I know, both Ubuntu versions 7.04 (which you have) and 8.04 (which I have) are affected with this "bug" of sorts--so, with the obvious comparison of performance between Lennart's and your machines just now, I couldn't help but wonder if your machines are running at half clock.

You see, while 7.04 and 8.04 were affected by this issue, 7.10 was not, and since that's the first version of Ubuntu I've used, I hadn't noticed any issue on my computer. But when I upgraded to 8.04, suddenly my prime-searching apps were running at half power until I found a workaround. I'll send you a PM with instructions on how to check and see if you're not running at full speed, and if you're not, how to remedy it.

[gd_barnes]

Originally Posted by Anonymous

Hmm...Gary, I think you might possibly have an issue with the CPU incorrectly staying in power-saving mode on your machines. As far as I know, both Ubuntu versions 7.04 (which you have) and 8.04 (which I have) are affected with this "bug" of sorts--so, with the obvious comparison of performance between Lennart's and your machines just now, I couldn't help but wonder if your machines are running at half clock.

You see, while 7.04 and 8.04 were affected by this issue, 7.10 was not, and since that's the first version of Ubuntu I've used, I hadn't noticed any issue on my computer. But when I upgraded to 8.04, suddenly my prime-searching apps were running at half power until I found a workaround. I'll send you a PM with instructions on how to check and see if you're not running at full speed, and if you're not, how to remedy it.

I suppose it is possible but keep in mind that I was comparing 24 cores to 40 cores. n=900 on 24 cores translates to n=1600 on 40 cores. But it looks like Lennart will do over n=2K for the rally but he may have started before the rally.

I'll be curious to check that out. I'd certainly like more firepower!

[mdettweiler]

Originally Posted by gd_barnes

I suppose it is possible but keep in mind that I was comparing 24 cores to 40 cores. n=900 on 24 cores translates to n=1600 on 40 cores. But it looks like Lennart will do over n=2K for the rally but he may have started before the rally.

Yeah, I know--but the reason why I still suspected a possible problem is because I've read in a number of places that 7.04, the version you use, is affected by this issue--and thus, if no action is taken, you will almost definitely be running at half-power. Anyway, I've sent you a PM regarding what you need to do to check if you're affected, and how to remedy the problem if necessary.