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Panic Mode On (84) Server Problems?
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Author | Message |
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JohnDK Send message Joined: 28 May 00 Posts: 1222 Credit: 451,243,443 RAC: 1,127 |
No new APs being split for a long time now. I'm beginning to panic, getting nervous. Same near panic here... If I read the status page right, there seems to be a lot of MBs being split before we get APs again. |
rob smith Send message Joined: 7 Mar 03 Posts: 22526 Credit: 416,307,556 RAC: 380 |
Quite simple - it takes a lot less time to split the APs off a tape than to split the MBs off the same tape. Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
kittyman Send message Joined: 9 Jul 00 Posts: 51478 Credit: 1,018,363,574 RAC: 1,004 |
Quite simple - it takes a lot less time to split the APs off a tape than to split the MBs off the same tape. There are also a lot more folks doing AP on GPU since the v7 and Lunatics installer rollouts. So the APs get crunched and returned faster than they used to be, hence they do not last as long when they are available. The kitties were not doing them on GPU until the Lunatics release. "Time is simply the mechanism that keeps everything from happening all at once." |
Wiggo Send message Joined: 24 Jan 00 Posts: 36768 Credit: 261,360,520 RAC: 489 |
More like more people are doing AP's so that they can get a better RAC happening. Don't worry Sten, I'll keep trying my best to chew through those MB's so more files can be loaded. Cheers. |
Lionel Send message Joined: 25 Mar 00 Posts: 680 Credit: 563,640,304 RAC: 597 |
Wiggo, you are dead right there. There is another side effect as well. For example, assuming I only do AP, if I only get AP for half the time, then I can maintain a RAC equivalent to crunching MB only (on a monthly basis), but with circa half the power usage due to idle GPUs and CPUs. |
kittyman Send message Joined: 9 Jul 00 Posts: 51478 Credit: 1,018,363,574 RAC: 1,004 |
More like more people are doing AP's so that they can get a better RAC happening. Don't worry indeed. The kitties are of course muching their way through a ton of MB work as well. I do not have any of my rigs set up AP-only. "Time is simply the mechanism that keeps everything from happening all at once." |
Cosmic_Ocean Send message Joined: 23 Dec 00 Posts: 3027 Credit: 13,516,867 RAC: 13 |
I've been getting lots of re-sends for APs to clean up that ATI fiasco. So far, re-sends are enough to satisfy my cache's demands. In fact, I just got a _7 task earlier. Linux laptop: record uptime: 1511d 20h 19m (ended due to the power brick giving-up) |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13854 Credit: 208,696,464 RAC: 304 |
Been scratching my head lately over the download network traffic. There have been some large surges, and as now some sustained traffic levels, even though there is no AP work going out, no increase in the amount of MB work in progess, nor a decline in the average turn around time. Grant Darwin NT |
kittyman Send message Joined: 9 Jul 00 Posts: 51478 Credit: 1,018,363,574 RAC: 1,004 |
I have noticed that myself, and was just as curious as you are. With the way v7 runs, I don't know if we shall really see another true 'shorty storm'. And even if we did have a minor one, the effects on the bandwidth would not have such a marked start and stop. Only guess would be retrieving some information from the servers back to the lab for archiving purposes? Dunno. "Time is simply the mechanism that keeps everything from happening all at once." |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
Looking at my results shorties are taking about 45% as long to run as normal AR tasks. I expect if we get a bunch of 'tapes' that make nothing but shorties we will be able to tell on the b/w graph. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
kittyman Send message Joined: 9 Jul 00 Posts: 51478 Credit: 1,018,363,574 RAC: 1,004 |
I wonder if the creation rate could be related to file 20jn12ac as it has been in its current state for way longer than is usual. As far as I know, that stuck dataset holds up 1 MB splitter. And since MB splitting has been keeping up with demand, maybe that's why it's not been dealt with. Although the rational for leaving it in it's stuck state evades me...LOL. "Time is simply the mechanism that keeps everything from happening all at once." |
rob smith Send message Joined: 7 Mar 03 Posts: 22526 Credit: 416,307,556 RAC: 380 |
I think Mark's right - as its not causing any delays in the MB production its never reached the top of someone's tuit list. Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
Donald L. Johnson Send message Joined: 5 Aug 02 Posts: 8240 Credit: 14,654,533 RAC: 20 |
I wonder if the creation rate could be related to file 20jn12ac as it has been in its current state for way longer than is usual. No it isn't. No splitter has run on that file since sometime last week. They blocked it somehow, and just have not dismounted it yet. Donald Infernal Optimist / Submariner, retired |
kittyman Send message Joined: 9 Jul 00 Posts: 51478 Credit: 1,018,363,574 RAC: 1,004 |
I wonder if the creation rate could be related to file 20jn12ac as it has been in its current state for way longer than is usual. How do you know that if it's stuck, Donald? I was told by Eric that if a dataset gets stuck, it ties up the splitter working on it. I was later told that Matt had restarted it. But it would appear that it got stuck again. Just curious why you think the splitters are all dancing around it and that it's not still stuck tying up a splitter. "Time is simply the mechanism that keeps everything from happening all at once." |
Jean Labrecque Send message Joined: 4 Jun 03 Posts: 77 Credit: 14,518,927 RAC: 0 |
look at the color chart channel in progress so it is not being split at this moment |
rob smith Send message Joined: 7 Mar 03 Posts: 22526 Credit: 416,307,556 RAC: 380 |
While not being split it is tying up a splitter doing nothing. Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
kittyman Send message Joined: 9 Jul 00 Posts: 51478 Credit: 1,018,363,574 RAC: 1,004 |
While not being split it is tying up a splitter doing nothing. Or IS it at the moment? Not really sure. JEAN makes a good point... We have 6 active splitters, and the SSP shows 6 datasets color coded as 'in progress'. The stuck dataset does not show that. Although I know everything on the SSP is not always as it appears. And don't have any idea if one splitter only works on one dataset at a time by itself. "Time is simply the mechanism that keeps everything from happening all at once." |
Donald L. Johnson Send message Joined: 5 Aug 02 Posts: 8240 Credit: 14,654,533 RAC: 20 |
look at the color chart channel in progress so it is not being split at this moment Exactly. There are no dark green "in progress" bands on that file, and have not been since about Wednesday last week. There was one when it was stuck earlier. That's why I think Eric or Matt "blocked" that file from being split. And don't have any idea if one splitter only works on one dataset at a time by itself. I have seen as many as 9 channels "in progress" on MB, so at least some of the splitters can do 2 channels at once. Donald Infernal Optimist / Submariner, retired |
kittyman Send message Joined: 9 Jul 00 Posts: 51478 Credit: 1,018,363,574 RAC: 1,004 |
look at the color chart channel in progress so it is not being split at this moment And ya just could be correct, my friend. "Time is simply the mechanism that keeps everything from happening all at once." |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13854 Credit: 208,696,464 RAC: 304 |
I'm thinking with the network bandwidth we have now, and no end in sight for the serverside limits, they could probably tweak the AP/MB ratio of work being split & pump out more AP these days. Grant Darwin NT |
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