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drummers-lowrise
1) Message boards : Number crunching : 2013 Challenge Series Official Standings (Message 67179)
Posted 3255 days ago by Profile Buga1
I have for a few months now not been able to find the Team or Individual standings for the 2013 challenges. The individual Challenges are viewable but the overall standings links seem to be dead.

Unless I am missing something?

Thanks
Rick
2) Message boards : Cullen/Woodall prime search : Woo LLR wu's (Message 64181)
Posted 3329 days ago by Profile Buga1
Finally started on a new batch of them and limited it to 2 wu's at once. Running much faster. Right around the 100 hour mark by the time it ends. About 1% and hour. Will test the other machine with 1 @ a time next.

Rick
3) Message boards : Cullen/Woodall prime search : Woo LLR wu's (Message 64016)
Posted 3338 days ago by Profile Buga1


You should see what happens when you run 3 tasks instead of 4. *ALL* prime searches are searching larger numbers than they were searching only a couple of years ago. Bigger numbers mean more digits; more digits mean more memory is used.

The more memory you use, the larger the percentage of memory accesses that are going to not be fulfilled by the CPU's cache. Since the cache is MUCH faster than regular memory, cache misses can significantly slow down the program.

Running multiple copies of LLR uses even more memory, and increases the percentage of cache misses, which causes LLR to run slower.

When I started crunching here in 2010, multi-core CPUs were first becoming common, especially quad core CPUs, and people were starting to notice an inexplicable slowdown when running multiple copies of LLR. It's now pretty obvious that the cause is cache misses.

While the amount of memory used has increased over the years, the amount of cache in your hardware is exactly the same, so running multiple LLR's on your Q6600s is going to have a greater penalty than before. My computer is a Q6600, and it certainly seems that running 4 LLR tasks slows down more now than it used to years ago.


Thanks for that Micheal. I will give it anothor test only running 3 or maybe even 2 and see what happens. I do only have 4gb of ram in each system.

Thanks
Rick
4) Message boards : Cullen/Woodall prime search : Woo LLR wu's (Message 64013)
Posted 3338 days ago by Profile Buga1
After a challenge I normally set up my systems to get a few of the next challenge wu's to test. So after the last challenge I did that. I got 4 wu's (wooLLR) and let them go. It has been some days so I went to check them. At around 55% done they have been running 137 hours. Calculating it out, it is going to take more than 8 days, which is the length of the next challenge.

Wondering if there is something I can do to speed them up?

They are running on somewhat older systems. Both q6600 cpu's. Each has a different motherboard and ram, but are running same in wu speed.

My main concern, even if they are long wu's, is finishing them in time during a challenge.

Thanks
Rick

Edit. I did want to add on almost all other wu types, my system will be close the the avg time listed in the sub-projects. But not these.
5) Message boards : Number crunching : The Year of the Ox Challenge (Message 13622)
Posted 4843 days ago by Profile Buga1
Well, maybe it will get finalized before the next challenge. LOL

I still have one left in pending looks like. So maybe by the 16th, or the 19th.

Was a good challenge, cant wait for the next one.

Rick
6) Message boards : Number crunching : Lost result (Message 11801)
Posted 4920 days ago by Profile Buga1
Had like 100+ just recently myself. In like last 1/2 hour.

Rick
7) Message boards : General discussion : Team recruitment thread (Message 5756)
Posted 5475 days ago by Profile Buga1
Great Little Team. Come check us out.

Calm Chaos

We are crunching over 30 different projects.

Fun and Games.

You can join us, even if your not on our Boinc Team. Our website is open to all. And growing all the time.

We just got 11 new Team Members so far in the month of May.



Rick
8) Message boards : General discussion : Team recruitment thread (Message 4481)
Posted 5605 days ago by Profile Buga1
Calm Chaos is looking for new members. We are crunching many different projects, including this one.

Come join us. Calm Chaos Forum

You don't have to be on the team to use our forums (and future website). They are there for fun and meeting people.

We are small but a growing team. Come give us a look.



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