Denis@home team challenge: 31st Oct - 7th Nov

[hanluc]

I've messaged Ba anyway, and Phil, no harm in asking.

 

[hanluc]

Hi guys

Ozaudio and Hanluc have sent me a few messages on this one what do I need to know?
Sorry not responded just coming off the back of a whole load of night shifts.

I have put an SR-2 my 16 core media ctr and the big rig on this hope it helps.

Change the stock applications for optimised ones, they run much quicker.

win: http://www.boincunited.org/opt_apps/denis/denis_1.05_x86_64-windows__sse41_v3.zip

linux: http://www.boincunited.org/opt_apps/denis/denis_1.05_x86_64-pc-linux-gnu__sse41_v3.tar.bz2

You probably know this but win directory is: C:\ProgramData\BOINC\projects\denis.usj.es_denisathome .Linux I'm not sure.

Thanks so much for helping out!

 

[hanluc]

Yes but cant find a damn thing, must be hiding it to pertekt me from meself

Came across someone else discussing this, and this directory was mentioned: /users/boinc_master/library/application_support/boinc/data

 

[hanluc]

Other news, we need a sailor with his whistle as unlikely as it sounds a captain is coming aboard

Glad to have him onboard (no pun intended) but he currently is running the stock app.

Captain Unlikely, I assume that's an extra spicy E5-2683v3 you have there on your Win machine so you want to replace the stock app with the AVX2 optisimed one.

Copy & pasted from an earlier post:

download: https://dl.dropboxusercontent.com/u/...1.6.1_avx2.zip and extract the contents to your C:\ProgramData\BOINC\projects\denis.usj.es_denisat home directory. Fully shut down the Boinc client (File/exit Boinc) restart and you should be good to go.

For the linux machime you need this one: linux:

http://www.boincunited.org/opt_apps/denis/denis_1.05_x86_64-pc-linux-gnu__sse41_v3.tar.bz2

HOWTO

 

[hanluc]

after a quick message to calum aka captain unlikey yes

one Haswell-E 14 core Xeon and 2xL5639

The master recruiter strikes again!

 

[hanluc]

According to FreeDC we were the top last 24hr producers but not by much, and Seti.USA have woken up.

 

[hanluc]

Hot and spicy, correct as ozaudio says I'll update the app when I get home tonight. Thanks for the Linux instructions as I'm a massive noob as far as Linux goes, I use it on whatever rigs are dedicated for crunching (just one right now) but I generally have no idea what I'm doing with it so I'd have struggled with that.

Optimised apps are (hopefully) running on both machines now, also discovered HT was turned off on my 2xL5639 for some reason so turned that back on. They're both finishing off some yoyo WUs as well so not quite at full crunching power, but once they're done they'll be 24/7 to the end of the challenge

WOW your windows machine is flying!

I thought your 2 ghz chip turbo's up 2.3ghz when all cores are running, is that right? my haswell xeon turbo's up to 2.5ghz, I have it now at 2.576ghz with bclk slightly overclocked, but your runtimes are over a minute quicker than mine What board are you running it on??

8,612 sec per wu seems far too long for the Genuine Intel(R) CPU @ 2.00GHz [Family 6 Model 63 Stepping 1](28 processors)

the xeon not much better at 7000 secs , no idea whats wrong tho lol

He initally ran the stock app.

 

[hanluc]

2.3Ghz max turbo, yes. It's on a Gigabyte X99-UD4, no overclocks or other trickery, so not sure why it's so much faster than yours?

I dunno either, I'm on win 7 but I wouldn't have thought it was that, I need to have a tinker.

 

[hanluc]

I was going to say, that's the only possibly major difference I can see, but I wouldn't have thought it'd be that either. One odd thing is my machine is reporting "Measured floating point speed" and "Measured integer speed" both as 1000 million ops/sec which seems unlikely to be true because it's too exact, so I'm not sure if that's some sort of error, possibly a clue of some sort
Only other thing I can think of is that possibly with all your cores and threads loaded, from what I've read elsewhere when using optimized AVX2 code it basically causes contention - because HT is basically only using "spare" resources for the extra logical cores, when using very optimized code there's less advantage with HT as there's not as much "slack" - if that makes any sense? So I'm thinking because not all of my cores/threads are running Denis yet, maybe it's running faster, and perhaps once I've finished these yoyo units and am only running Denis the runtimes might go up a little. Of course as long as the runtime doesn't double then HT still provides an advantage. I do only give BOINC 22 cores out of 28 as it keeps the machine responsive for other tasks without me having to pause it, too. Would be great if BOINC had an option to only use x cores when the PC is in use - I know there's an option to use x % CPU when the PC is in use but it's not quite the same.

I'm still learning this machine, sometimes, for whatever reason, it gets stuck on the x12 (idle) multiplier, if I restart boinc it goes to x25 it stays there.

But I think you've hit the nail on head with you only using 22 cores out of 28 threads. I know that my (and yours) single thread turbo is more than all threads turbo. I have just now paused all my work units that hadn't started and let the others run out, as the work units decreased, they completed faster and faster.

 

[hanluc]

Youl've summed up the status of the Denis project /servers perfectly, I'l pass them on to the DCVault folks who are looking to add it.
You can be forgiven for your mistake, but it's not OCN in 3rd, it's SETI.USA who are storming through from nowhere. They have guys on their team who are like one man teams.

 

[hanluc]

No joy!

Having copied the files and changed the ownership as described, I get 'Computation error' for all WU's. Deleting the two files fixes it.

That usually happens when you use an app your CPU doesn't support, looking at your CPU you want the sse3 version (not sse4.1).

http://www.boincunited.org/opt_apps/denis/denis_1.05_x86_64-pc-linux-gnu__sse3_v3.tar.bz2

 

[hanluc]

Anything I can do? I tried an update but no go.

In the boinc client, click on the 'transfers' tab you should see lots of work units that have failed to upload, this can happen if the server is down, or if there's something wrong with your connection. It will say 'project back off' with a countdown timer which gets longer each time it fails to upload and can build up to several hours, try the 'retry now' tab and see if they now upload.

 

[hanluc]

Don't know if anyone else noticed, but Biffa is featured as member of the day

http://denis.usj.es/denisathome/index.php

"Currently running with the OcUk pensioners team"
LOL, speak for yourself pal, spring chicken me

 

[hanluc]

Lets hope those tasks wernt my wingman tasks as they wont get given out again till the 10th lol , still just noticed i had loads expire on me from when i was playing around, o well

o dear http://denis.usj.es/denisathome/workunit.php?wuid=16796088 hands up if your pc 30293 and your name is jondi_hanluc

That's me and my wingman has reported in.

Unlike this guy who let the deadline run out
http://denis.usj.es/denisathome/workunit.php?wuid=14642145
this is my oldest pending work unit

 

[hanluc]

Lets hope those tasks wernt my wingman tasks as they wont get given out again till the 10th lol , still just noticed i had loads expire on me from when i was playing around, o well

Hehe. I expect many of the time outs were aborted WU's from upgrading the app

What seems to happen is if you have work units assigned to the stock app, and you then upgrade to an opt app, the old stock work units just disappear. Thing to do is abort them before you upgrade.

 

[hanluc]

I suspect a bunker-bomb from Raymond might be on cards !

I've been suspecting this, his output has halved recently, no resources have gone anywhere else in boinc. Could be another explanation of course, we'll soon find out if he's playing silly beggars.

 

[hanluc]

We had 30, 30! active members for this challenge, and we dumped over 30 million points in the last seven days, fantastic job! really proud to be a part of this team!