Posts by xii5ku
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1) Message boards : Number crunching : No tasks (Message 1365)
Posted 16 Sep 2018 by xii5ku
PS,
message 1362 is not a complaint, merely a correction of what I wrote in message 1356. I understood that WU generation for gene@home is not trivial and cannot be increased by the flip of a switch.
2) Message boards : Number crunching : No tasks (Message 1364)
Posted 16 Sep 2018 by xii5ku
[H]auntjemima,
until Saturday 18:00 UTC, server status always showed "tasks ready to send" to be zero, or almost zero. During this time, those who updated their clients more frequently than it would update by itself, got enough tasks to keep their hosts busy. Those who let their clients run freely, received almost no tasks.

(Over the course of 12 hours from Saturday 18:00 UTC on, "tasks ready to send" slowly climbed up and are at practically normal level now. This is of course because the sprint ends at Sunday 16:00 UTC, and TN-Grid's quota of 8 tasks in progress per logical CPU gives about a day worth of tasks -- less on quicker hosts, more on slower hosts. Meaning, those who participate in this sprint but will switch elsewhere after the sprint stopped requesting new tasks about a day before the sprint ends.)

My guess that the clients which remained idle make up roughly half of the entire computing capacity that was intended to run TN-Grid this weekend (for the sprint or otherwise) comes from the observation of how many points the various teams have by now, how points were distributed in sprints in which there was no scarcity of work, and from reading at a few forums.

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Edit:
It is a fact that "tasks ready to send" were at or very near zero constantly from Wednesday 16:00 UTC until some time after Saturday 18:00 UTC. (In addition, "tasks in progress" climbed from 35,000 to 65,000 between announcement and start of the sprint, and further to a peak of 79,000 during the sprint. It is now coming down slowly.) So, it is also a fact that demand for new work was higher than supply of new work, constantly from the announcement of the sprint until less than a day before the end of the sprint. IOW, there were hosts without enough work, as a matter of fact.

The only point to disagree on is how many hosts had not enough work; this one point was really just guesswork on my part. But it were certainly many.

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Edit 2:
I disagree on the other hand that bunkering was impossible. The slowness of the work generator does not prevent bunkering. It only prevents some bunkering methods from being effective, while other bunkering methods still work. (Bunkering = receiving new work but not reporting completed work; you can control the latter, only the former depends on the server having work available.)
3) Message boards : Number crunching : No tasks (Message 1362)
Posted 15 Sep 2018 by xii5ku
xii5ku wrote:
valterc wrote:
For your reference the current pace of the work generator is actually around 488 new workunits every 15-18 minutes.

~145 credits/task * 2 tasks/WU * 488 WUs / ~18 minutes * 1440 minutes/day = ~11 M credits/day

This is looking good! The project is seeing ~3 M credits/day normally.

@valterc, at this point it looks like you meant 488 new tasks, not WUs, per 15-18 minutes.

~150 credits/task * 488 tasks / 15...18 minutes * 1440 minutes/day = ~6...7 M credits/day

This aligns with the total production of the project today and yesterday, as seen on free-dc or boincstats. Unfortunately this means, as a very rough guesstimation, that perhaps 1/2 of the computer capacity which volunteers would like to put to task during this sprint remains without work.

The number of tasks ready to send remain near zero. IOW even though less than a day remains in this sprint, there is still more demand for new work than there is supply.
4) Message boards : Number crunching : No tasks (Message 1360)
Posted 14 Sep 2018 by xii5ku
Number of tasks in progress:
- was constantly at 30,000 for many days until Tuesday
- went to 35,000 on Wednesday for no apparent reason
- steadily climbed to almost 70,000 since the sprint announcement until now, and is still rising
5) Message boards : Number crunching : No tasks (Message 1358)
Posted 14 Sep 2018 by xii5ku
@Marko Sango,
the project which is chosen for a Formula BOINC sprint is announced exactly 24 hours before the start of each sprint. (Except when Sebastien forgets to update the site.)

A reminder at when exact date and time the next sprint project will be announced is appearing at the Formula BOINC site a week in advance of each sprint.
6) Message boards : Number crunching : No tasks (Message 1356)
Posted 13 Sep 2018 by xii5ku
valterc wrote:
For your reference the current pace of the work generator is actually around 488 new workunits every 15-18 minutes.

~145 credits/task * 2 tasks/WU * 488 WUs / ~18 minutes * 1440 minutes/day = ~11 M credits/day

This is looking good! The project is seeing ~3 M credits/day normally.
7) Message boards : Number crunching : No tasks (Message 1352)
Posted 12 Sep 2018 by xii5ku
Orange Kid wrote:
The server is out of work and a Formula Boinc sprint is in progress.

Link to Formula Boinc sprint page:
http://formula-boinc.org/sprint.py?sprint=15&year=2018

H|Skillz wrote:
We need tasks!

As far as I can tell, recent Formula Boinc sprints cause about more than double (quite possibly triple) the production compared to normal days at projects which (a) are whitelisted by Gridcoin = already have a relatively high daily baseline of participation and (b) are not constrained by work generator pace or validator problems or bandwidth or whatnot.

TN-Grid is whitelisted by Gridcoin, but it has a notoriously low rate of work generation. Long story short: "We need tasks!" -> Good luck with that. :-(

Edit, quoting from post 1133:
On 19 October 2017 valterc wrote:
The way we produce work is rather complicated (computationally speaking), at the moment this is the maximum pace we can achieve.
8) Message boards : News : Another experiment on E. coli (Message 1148)
Posted 23 Oct 2017 by xii5ku
Felix, work is being generated, but it is downloaded immediately by hosts which are asking for work often enough. Hence the server status page shows 0 tasks ready to send practically all the time.

In other words, computer capacity available from contributors currently exceeds the pace of the work generator.
9) Message boards : Number crunching : Formula Boinc sprint, October 20-23 (Message 1143)
Posted 23 Oct 2017 by xii5ku
As far as I observed, work fetching was indeed limited by the pace of the work generator during the day before the actual start of the sprint and during maybe half a day after the start, due to sprint participants wanting to load up with work. Nevertheless I managed to use a large part of this period for actual crunching with a bit of checking back on my hosts.

But after that, there was a plentiful supply of work. Also, result uploads etc. worked without a hitch.

So, thanks to the TN-Grid team for AFAICT a well working project infrastructure.
10) Message boards : Number crunching : Formula Boinc sprint, October 20-23 (Message 1132)
Posted 19 Oct 2017 by xii5ku
Hi,
just a heads-up that TN-Grid has been selected as a sprint project for the next 3 days.
http://formula-boinc.org/sprint.py?sprint=17&year=2017

Not sure if Formula Boinc admins routinely keep project admins informed about their project choices and schedule, so at least now you know. :-)
There seems to be a high rate of requests for work to your server now...




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