FEED ME MORE - FEED ME MORE!

留言板 : Number crunching : FEED ME MORE - FEED ME MORE!
留言板合理

To post messages, you must log in.

1 · 2 · 后

作者消息
BetelgeuseFive Project Donor
志愿者测试人员

发送消息
已加入:6 Jul 99
贴子:157
积分:17,117,787
近期平均积分:19
Netherlands
消息 1551763 - 发表于:3 Aug 2014, 8:17:01 UTC - 回复消息 1551001.  


That's the way I took it too.


I don't think either one of us cares what the number is.

I don't even care that they are comparable between AP and MB because I don't know if the "work done" is comparable.

I would like to think that "credits" were related to something real. Pick a thing and make it a reference. FLOPS? Fine. Time on machine? Fine. Number of work units completed? Fine.

Numbers based on a formula that only tells you what you get when you run numbers through the formula? Not-fine.

I'd prefer the FLOP-count, but maybe that's too hard to-do.


In my opinion FLOP-count is just another meaningless indication, so we should go back to the way it was back in the good old days:

SETI@home classic workunits: 12,226
SETI@home classic CPU time: 76,480 hours

Use separate entries for AP/MB and separate entries for CPU/GPU and thats it.
I know you can't compare 1 hour of processing on a high end CPU/GPU with 1 hour of processing on a low end CPU/GPU, but the number of workunits processed will be an indication of what was used. I also know there is a (sometimes quite big) difference between MB tasks depending on the angle, but as everyone gets a fair share of all angles in the long, run this should not matter much.

I hope Astropulse v7 will be made available here soon. It will solve the wasted CPU/GPU time on tasks with (havy) blanking. I just had a personal worst ever (percent blanked: 99.02):

http://setiathome.berkeley.edu/result.php?resultid=3651886409

Tom
ID: 1551763 · 举报违规帖子
tbret
志愿者测试人员
Avatar

发送消息
已加入:28 May 99
贴子:3380
积分:296,162,071
近期平均积分:40
United States
消息 1551001 - 发表于:1 Aug 2014, 17:07:18 UTC - 回复消息 1550803.  


That's the way I took it too.


I don't think either one of us cares what the number is.

I don't even care that they are comparable between AP and MB because I don't know if the "work done" is comparable.

I would like to think that "credits" were related to something real. Pick a thing and make it a reference. FLOPS? Fine. Time on machine? Fine. Number of work units completed? Fine.

Numbers based on a formula that only tells you what you get when you run numbers through the formula? Not-fine.

I'd prefer the FLOP-count, but maybe that's too hard to-do.
ID: 1551001 · 举报违规帖子
BetelgeuseFive Project Donor
志愿者测试人员

发送消息
已加入:6 Jul 99
贴子:157
积分:17,117,787
近期平均积分:19
Netherlands
消息 1550964 - 发表于:1 Aug 2014, 14:53:47 UTC - 回复消息 1550803.  

The kitties have no complaints....
They feast on AP when it is available and then dutifully crunch away at the MB cache to help the servers towards the next batch of AP.

It would be nice if the credits were normalized between the two types of work though.

AstroPulse v7 will probably do that. It is current being tested on Beta.


Most likely the wrong direction though.

That's the way I took it too.


I do not see much difference between credits granted for AP v6 over here and AP v7 over on beta. Still big differences between workunits that cannot be explained by exiting early because of 30/30 signals found.

You can check my results for yourself if you like:

http://setiweb.ssl.berkeley.edu/beta/results.php?hostid=58935&offset=0&show_names=0&state=0&appid=

Tom
ID: 1550964 · 举报违规帖子
kittyman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
志愿者测试人员
Avatar

发送消息
已加入:9 Jul 00
贴子:50494
积分:1,018,363,574
近期平均积分:1,004
United States
消息 1550803 - 发表于:1 Aug 2014, 5:43:32 UTC - 回复消息 1550784.  

The kitties have no complaints....
They feast on AP when it is available and then dutifully crunch away at the MB cache to help the servers towards the next batch of AP.

It would be nice if the credits were normalized between the two types of work though.

AstroPulse v7 will probably do that. It is current being tested on Beta.


Most likely the wrong direction though.

That's the way I took it too.
"Learn from yesterday. Live for today. Hope for tomorrow." Albert Einstein
"With cats." kittyman

ID: 1550803 · 举报违规帖子
Profile arkayn
志愿者测试人员
Avatar

发送消息
已加入:14 May 99
贴子:4436
积分:55,006,323
近期平均积分:0
United States
消息 1550784 - 发表于:1 Aug 2014, 4:43:55 UTC - 回复消息 1550615.  

The kitties have no complaints....
They feast on AP when it is available and then dutifully crunch away at the MB cache to help the servers towards the next batch of AP.

It would be nice if the credits were normalized between the two types of work though.

AstroPulse v7 will probably do that. It is current being tested on Beta.


Most likely the wrong direction though.

ID: 1550784 · 举报违规帖子
Profile HAL9000
志愿者测试人员
Avatar

发送消息
已加入:11 Sep 99
贴子:6533
积分:196,805,888
近期平均积分:57
United States
消息 1550615 - 发表于:31 Jul 2014, 19:00:13 UTC - 回复消息 1550568.  

The kitties have no complaints....
They feast on AP when it is available and then dutifully crunch away at the MB cache to help the servers towards the next batch of AP.

It would be nice if the credits were normalized between the two types of work though.

AstroPulse v7 will probably do that. It is current being tested on Beta.
SETI@home classic workunits: 93,865 CPU time: 863,447 hours
Join the BP6/VP6 User Group today!
ID: 1550615 · 举报违规帖子
kittyman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
志愿者测试人员
Avatar

发送消息
已加入:9 Jul 00
贴子:50494
积分:1,018,363,574
近期平均积分:1,004
United States
消息 1550568 - 发表于:31 Jul 2014, 17:40:28 UTC
最近的修改日期:31 Jul 2014, 17:41:16 UTC

The kitties have no complaints....
They feast on AP when it is available and then dutifully crunch away at the MB cache to help the servers towards the next batch of AP.

It would be nice if the credits were normalized between the two types of work though.
"Learn from yesterday. Live for today. Hope for tomorrow." Albert Einstein
"With cats." kittyman

ID: 1550568 · 举报违规帖子
Sleepy
志愿者测试人员
Avatar

发送消息
已加入:21 May 99
贴子:214
积分:98,947,784
近期平均积分:28,360
Italy
消息 1550565 - 发表于:31 Jul 2014, 17:35:55 UTC - 回复消息 1550450.  

Dear Juan,
I know from what has been written here what is being tested and tried to fix the credit madness. And my best wishes goes to them.
This would obviously be the best and final thing. Granted.

What I was discussing (and I think also the others) is what to do and what may be best in the meantime. Meantime that I fear will be rather long.

Cheers!
Sleepy
ID: 1550565 · 举报违规帖子
juan BFP Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
志愿者测试人员
Avatar

发送消息
已加入:16 Mar 07
贴子:9771
积分:572,710,851
近期平均积分:3,799
Panama
消息 1550450 - 发表于:31 Jul 2014, 12:25:12 UTC
最近的修改日期:31 Jul 2014, 12:36:30 UTC

The simple answer to eliminate this problem is fix creditscrew. Then MB & AP work will "pay" the same number of "meaningless" credits and then, only then, the work balance MB vs AP will be restored since will make no diference to do any of both works.

Actualy there are few who is working hard to try to do, you could follow them at albert@home.
ID: 1550450 · 举报违规帖子
Sleepy
志愿者测试人员
Avatar

发送消息
已加入:21 May 99
贴子:214
积分:98,947,784
近期平均积分:28,360
Italy
消息 1550431 - 发表于:31 Jul 2014, 11:33:06 UTC - 回复消息 1549158.  


I still think if we cut the number of AP splitters down to one or two instead of 6, AP splitting would slow down closer to the speed of MB splitting and then we wouldn't end up with these huge backlogs of waiting


Though I would find it some kind of elegant solution, I fear that many would start complaining about difficulties in downloading AP WUs, which would be generalised and source for headaches for the staff to manage.
The way it is done now is a nuisance for those few of us going 100% AP and consistently checking the systems. We know what is happening, we may not like it entirely and complain once in a while, but that's it and everything goes on smoothly.
In other words, this is a nuisance for few informed people.
The way you suggest may end in problems to many more less informed people who would find themselves in unexpected problems.

Therefore, I think the present solution is wiser.

Though I always look with terror when I see 600 channels loaded at the same time! :-) ;-)

My 2 cents.

Sleepy
ID: 1550431 · 举报违规帖子
Profile HAL9000
志愿者测试人员
Avatar

发送消息
已加入:11 Sep 99
贴子:6533
积分:196,805,888
近期平均积分:57
United States
消息 1550282 - 发表于:31 Jul 2014, 1:59:12 UTC - 回复消息 1550270.  

I still think if we cut the number of AP splitters down to one or two instead of 6, AP splitting would slow down closer to the speed of MB splitting and then we wouldn't end up with these huge backlogs of waiting for MB to catch up...but I guess the staff doesn't see a problem with the way things are and it seems to work fine..it just kind of annoys some of us crunchers, but it makes no difference to the science. *shrug*


At the moment there are only 5 of the 7 MB splitters working with the other 2 being disabled and they have been for some time now. It would improve things some what if/when they were put back online.

The 5 MB splitter are generally more than fast enough to keep up with demand. They actually cycle off every so often as the amount of work RTS is large enough. If there is an error it takes a bit of time to catch up.
Some time ago, shortly after moving to the CoLo IIRC, it was mentioned that they limit the speed/amount of the splitters because they were hitting a disk i/o limit with the storage array.
SETI@home classic workunits: 93,865 CPU time: 863,447 hours
Join the BP6/VP6 User Group today!
ID: 1550282 · 举报违规帖子
Profile Cliff Harding
志愿者测试人员
Avatar

发送消息
已加入:18 Aug 99
贴子:1432
积分:110,967,840
近期平均积分:67
United States
消息 1550270 - 发表于:31 Jul 2014, 1:09:53 UTC - 回复消息 1549158.  

I still think if we cut the number of AP splitters down to one or two instead of 6, AP splitting would slow down closer to the speed of MB splitting and then we wouldn't end up with these huge backlogs of waiting for MB to catch up...but I guess the staff doesn't see a problem with the way things are and it seems to work fine..it just kind of annoys some of us crunchers, but it makes no difference to the science. *shrug*


At the moment there are only 5 of the 7 MB splitters working with the other 2 being disabled and they have been for some time now. It would improve things some what if/when they were put back online.


I don't buy computers, I build them!!
ID: 1550270 · 举报违规帖子
Darth Beaver Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Avatar

发送消息
已加入:20 Aug 99
贴子:6728
积分:21,443,075
近期平均积分:3
Australia
消息 1549280 - 发表于:29 Jul 2014, 2:55:29 UTC - 回复消息 1549276.  

ops ! i'll have to hide me puters next time forgot everyone can see ....:):)
ID: 1549280 · 举报违规帖子
Profile HAL9000
志愿者测试人员
Avatar

发送消息
已加入:11 Sep 99
贴子:6533
积分:196,805,888
近期平均积分:57
United States
消息 1549276 - 发表于:29 Jul 2014, 2:46:49 UTC

You can have more AP when you finish with all of your MB!
SETI@home classic workunits: 93,865 CPU time: 863,447 hours
Join the BP6/VP6 User Group today!
ID: 1549276 · 举报违规帖子
Darth Beaver Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Avatar

发送消息
已加入:20 Aug 99
贴子:6728
积分:21,443,075
近期平均积分:3
Australia
消息 1549266 - 发表于:29 Jul 2014, 2:19:48 UTC

Dag nab it just as 1 machine starts to show a real remaning time we run out of AP's grrr

FEED US MORE ......HUNGRY .......HUNGRY.......HUNGRY
ID: 1549266 · 举报违规帖子
Profile betreger Project Donor
Avatar

发送消息
已加入:29 Jun 99
贴子:10335
积分:29,581,041
近期平均积分:66
United States
消息 1549263 - 发表于:29 Jul 2014, 2:06:53 UTC

APs are gone now we have to live on resends or something else for a real long time.
ID: 1549263 · 举报违规帖子
Profile Blurf
志愿者测试人员

发送消息
已加入:2 Sep 06
贴子:8939
积分:12,678,685
近期平均积分:0
United States
消息 1549180 - 发表于:28 Jul 2014, 20:29:56 UTC

Bah! You jinxed us....

:)


ID: 1549180 · 举报违规帖子
Cosmic_Ocean
Avatar

发送消息
已加入:23 Dec 00
贴子:3027
积分:13,516,867
近期平均积分:13
United States
消息 1549158 - 发表于:28 Jul 2014, 19:55:51 UTC

APs being much more available in the past was also do to the feeder proportions, as well. Used to be 97 MBs and 3 APs in every load of 100 tasks for the feeder. So that limited the number of APs that were available to the scheduler every 2 (?) seconds to being 3. So.. 10,000 APs in RTS queue would last a while. Now it's just kind of a free-for-all and they go fast.

Plus all of the advancements in processing speed doesn't help, either.

I still think if we cut the number of AP splitters down to one or two instead of 6, AP splitting would slow down closer to the speed of MB splitting and then we wouldn't end up with these huge backlogs of waiting for MB to catch up...but I guess the staff doesn't see a problem with the way things are and it seems to work fine..it just kind of annoys some of us crunchers, but it makes no difference to the science. *shrug*
Linux laptop:
record uptime: 1511d 20h 19m (ended due to the power brick giving-up)
ID: 1549158 · 举报违规帖子
Profile betreger Project Donor
Avatar

发送消息
已加入:29 Jun 99
贴子:10335
积分:29,581,041
近期平均积分:66
United States
消息 1549128 - 发表于:28 Jul 2014, 18:47:51 UTC

APs are not being split and it looks like it will be a long time before they start up again.
ID: 1549128 · 举报违规帖子
Profile Cliff Harding
志愿者测试人员
Avatar

发送消息
已加入:18 Aug 99
贴子:1432
积分:110,967,840
近期平均积分:67
United States
消息 1548975 - 发表于:28 Jul 2014, 14:28:08 UTC

Paradoxically, this present bonanza can mean a long starvation when the AP splitters will stop for medium to high capacity crunchers.

 Which may not be in line with your happyness.

 Though things are actually generally going much better (I would say very well) since colo transfer.


Yeah, there is that dreadful drought that keeps popping up, but with the addition of my new toy, it make those periods more bearable.


I don't buy computers, I build them!!
ID: 1548975 · 举报违规帖子
1 · 2 · 后

留言板 : Number crunching : FEED ME MORE - FEED ME MORE!


 
©2020 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.