Server Status page shows everything's good, but the cache on my main cruncher is running down again. Most requests for work result in "Project has no tasks available" messages and those that do get work don't get enough to make up the developing deficit.

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Grant
Darwin NT

Server Status page shows everything's good, but the cache on my main cruncher is running down again. Most requests for work result in "Project has no tasks available" messages and those that do get work don't get enough to make up the developing deficit.

Not sure what the problem could be there.
I am just a few WUs short of my 2600 cache limit across my 8 rigs.
There are still a lot of the Aerecibo shorties out in the field, so lots of work requests to fill.
I suspect it's just the luck of the draw to hit the scheduler when it has a full bucket.

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"Time is simply the mechanism that keeps everything from happening all at once."

Hmm.
Results received in the last hour is at 111,780. At the height of the Arecibo only work I think I noticed it hit around 15,250/hr- it could be that all the systems that ran out of work now have some, so their Manager backoffs are no longer stopping them from requesting work, hence increasing the demand on the server even though the amount of work being returned has dropped off.

It could be we're looking at another system limit. The project wants more crunchers to process the work, but if it can't continue to support the current load that's just going to lead to more unhappy crunchers that won't hang around and head for greener pastures (ie more work, and more credit).
Time for another Feeder, or increase the size of the present one (if it's possible)? Or is it just a case of something else on Synergy soaking up CPU cycles & inhibiting it's output?


EDIT- just looked at my Event Log and where Scheduler requests usually get a response in 3-4 seconds, at the moment it can take as long as 10 seconds, and has been that way for at least the last 8 hours (as far back as my Event Log goes).

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Grant
Darwin NT

The other thing that sometimes happens is the work being split creates almost all VLAR tasks, which are suppressed from being sent to nvidia GPUs.
So the ready to send cache can be full, but will not be sent to those cards.

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"Time is simply the mechanism that keeps everything from happening all at once."

The other thing that sometimes happens is the work being split creates almost all VLAR tasks, which are suppressed from being sent to nvidia GPUs.
So the ready to send cache can be full, but will not be sent to those cards.

I'll amend that to, "Arecibo VLAR's won't be sent to GPU's", as GBT VLAR's are sent to GPU's. ;-)

Cheers.

The other thing that sometimes happens is the work being split creates almost all VLAR tasks, which are suppressed from being sent to nvidia GPUs.
So the ready to send cache can be full, but will not be sent to those cards.

Yep.
But it's been almost a day or so since I got an Arecibo VLAR on my CPU.

Since my initial post, my system picked up enough work to fill the cache, but then the next 6 requests for work have resulted in none so it's not as full as it was...



I've done a speed test on my net connection, and it's not as healthy as it should be- uploads are actually faster than downloads at the moment and there's quite a bit of latency & jitter which doesn't help things.

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Grant
Darwin NT

The other thing that sometimes happens is the work being split creates almost all VLAR tasks, which are suppressed from being sent to nvidia GPUs.
So the ready to send cache can be full, but will not be sent to those cards.

I'll amend that to, "Arecibo VLAR's won't be sent to GPU's", as GBT VLAR's are sent to GPU's. ;-)

Cheers.

That would be correct.
Thanks.

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"Time is simply the mechanism that keeps everything from happening all at once."

Really struggling to get work here.
15/01/2017 14:43:25 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 14:43:25 | SETI@home | Reporting 3 completed tasks
15/01/2017 14:43:25 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 14:43:32 | SETI@home | Scheduler request completed: got 6 new tasks

15/01/2017 14:48:38 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 14:48:38 | SETI@home | Reporting 2 completed tasks
15/01/2017 14:48:38 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 14:48:46 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 14:48:46 | SETI@home | Project has no tasks available

15/01/2017 14:53:51 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 14:53:51 | SETI@home | Reporting 2 completed tasks
15/01/2017 14:53:51 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 14:53:59 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 14:53:59 | SETI@home | Project has no tasks available

15/01/2017 14:59:05 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 14:59:05 | SETI@home | Reporting 2 completed tasks
15/01/2017 14:59:05 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 14:59:14 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 14:59:14 | SETI@home | Project has no tasks available

15/01/2017 15:04:20 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:04:20 | SETI@home | Reporting 9 completed tasks
15/01/2017 15:04:20 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:04:27 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:04:27 | SETI@home | Project has no tasks available

15/01/2017 15:09:32 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:09:32 | SETI@home | Reporting 2 completed tasks
15/01/2017 15:09:32 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:09:40 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:09:40 | SETI@home | Project has no tasks available

15/01/2017 15:14:46 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:14:46 | SETI@home | Reporting 3 completed tasks
15/01/2017 15:14:46 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:14:56 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:14:56 | SETI@home | Project has no tasks available

15/01/2017 15:20:01 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:20:01 | SETI@home | Reporting 3 completed tasks
15/01/2017 15:20:01 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:20:08 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:20:08 | SETI@home | Project has no tasks available

15/01/2017 15:25:14 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:25:14 | SETI@home | Reporting 3 completed tasks
15/01/2017 15:25:14 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:25:22 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:25:22 | SETI@home | Project has no tasks available

15/01/2017 15:30:27 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:30:27 | SETI@home | Reporting 1 completed tasks
15/01/2017 15:30:27 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:30:33 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:30:33 | SETI@home | Project has no tasks available

15/01/2017 15:35:38 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:35:38 | SETI@home | Reporting 3 completed tasks
15/01/2017 15:35:38 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:35:45 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:35:45 | SETI@home | Project has no tasks available

15/01/2017 15:40:51 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:40:51 | SETI@home | Reporting 3 completed tasks
15/01/2017 15:40:51 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:40:59 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:40:59 | SETI@home | Project has no tasks available

15/01/2017 15:46:04 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:46:04 | SETI@home | Reporting 3 completed tasks
15/01/2017 15:46:04 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:46:13 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:46:13 | SETI@home | Project has no tasks available

15/01/2017 15:51:19 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:51:19 | SETI@home | Reporting 4 completed tasks
15/01/2017 15:51:19 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:51:27 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:51:27 | SETI@home | Project has no tasks available

15/01/2017 15:56:33 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 15:56:33 | SETI@home | Reporting 2 completed tasks
15/01/2017 15:56:33 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 15:56:41 | SETI@home | Scheduler request completed: got 0 new tasks
15/01/2017 15:56:41 | SETI@home | Project has no tasks available

Finally!
15/01/2017 16:01:51 | SETI@home | Sending scheduler request: To fetch work.
15/01/2017 16:01:51 | SETI@home | Reporting 4 completed tasks
15/01/2017 16:01:51 | SETI@home | Requesting new tasks for CPU and NVIDIA GPU
15/01/2017 16:01:55 | SETI@home | Scheduler request completed: got 51 new tasks

Still not enough to fill the cache, but less likely to run out in the very near future.

---

Grant
Darwin NT

I wonder if it's just bad timing or your BOINC version as I've been having no such issues here Grant.

Cheers.

I wonder if it's just bad timing or your BOINC version as I've been having no such issues here Grant.

Cheers.

. . FWIW I am running 7.6.33 and while I was having similar problems earlier right now it seems to be OK.

Stephen

:)

[edit] touch wood

I wonder if it's just bad timing or your BOINC version as I've been having no such issues here Grant.

Cheers.

. . FWIW I am running 7.6.33 and while I was having similar problems earlier right now it seems to be OK.

Stephen

:)

[edit] touch wood

It could very well be those excessive back off times that later versions than mine have causing your problems.

Between that, replacing the Messages tab with a Notice tab and the flakiness of many later versions I decided to stick with what works best for me (I hate being a guinea pig).

[edit] It'll take at least the first 2 fixed and many good reports on the 3rd to convince me to think about upgrading.

Cheers.

It could very well be those excessive back off times that later versions than mine have causing your problems.

Not backoff related as I haven't (yet) run out of work.
But for some reason I ask for work, and there is none available. The last hour or so it hasn't taken nearly as many requests to finally get work, but it's certainly not available with every request the way it usually is. Normally I can report 2, get 2. Report 5, get 5. Report 1, get 1.

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Grant
Darwin NT

It could very well be those excessive back off times that later versions than mine have causing your problems.

Not backoff related as I haven't (yet) run out of work.
But for some reason I ask for work, and there is none available. The last hour or so it hasn't taken nearly as many requests to finally get work, but it's certainly not available with every request the way it usually is. Normally I can report 2, get 2. Report 5, get 5. Report 1, get 1.

Well I can't think of any other reason Grant, as I just havn't suffered depleted caches except for the regular outrages here.

Cheers.

Well I can't think of any other reason Grant, as I just havn't suffered depleted caches except for the regular outrages here.

Yeah.
It's odd.

My download speed is way off what it should be, and jitter & latency way up, but with those sort of issues if they cause a problem usually result in Scheduler timeouts, not just slightly longer than usual waits for a response, and the response being "No work available."

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Grant
Darwin NT

I wonder if it's just bad timing or your BOINC version as I've been having no such issues here Grant.

Cheers.

. . FWIW I am running 7.6.33 and while I was having similar problems earlier right now it seems to be OK.

Stephen

:)

[edit] touch wood

It could very well be those excessive back off times that later versions than mine have causing your problems.

Between that, replacing the Messages tab with a Notice tab and the flakiness of many later versions I decided to stick with what works best for me (I hate being a guinea pig).

[edit] It'll take at least the first 2 fixed and many good reports on the 3rd to convince me to think about upgrading.

Cheers.

. . Again, FWIW I can't say I was aware of any problems with 3.6.22, but 3.6.33 is maybe a little flaky at times, though I can't put my finger on it :)

Stephen

:)

Grant, it's nothing to worry about, the scheduler is
1). Just full of vlar's at that time,
2). I was just there 2 seconds before you and emptied it :)

Grant, it's nothing to worry about, the scheduler is
1). Just full of vlar's at that time,

I haven't had any Arecibo VLARs today at all.
Even in Arecibo VLAR storms it hasn't taken more than about 6 requests to get work.

2). I was just there 2 seconds before you and emptied it :)

For the last 1hr 30min? I've got 2 WUs in that time.
Before that it was just over an hour before getting any WUs.

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Grant
Darwin NT

yea, about and hour ago I was 1/2 empty, then poof, 111 tasks, now all is fine. It's just luck of the draw when I need 3-9 per request.

yea, about and hour ago I was 1/2 empty, then poof, 111 tasks, now all is fine. It's just luck of the draw when I need 3-9 per request.

At least i'm not the only one having problems getting regular work.

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Grant
Darwin NT

yea, about and hour ago I was 1/2 empty, then poof, 111 tasks, now all is fine. It's just luck of the draw when I need 3-9 per request.

At least i'm not the only one having problems getting regular work.

Grant you are not the only one having trouble getting work!
I'm down to about 30% of work units in my cache, that is only about a couple of hours worth.
I keep getting the same as you.

0 tasks sent
project has no tasks available.

Even if there is a flood of Arecibo VLARs, where is all of the GBT work? The RTS says that it is full.
I don't get it. According to SSP it doesn't look like there should be a problem.

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Bruce