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Posts by Jeffery M. Thompson

21) Message boards : Number crunching : Special Contribution Badge (Message 61696)
Posted 5 May 2014 by Jeffery M. Thompson
Post:
I am pointing the MilkyWay team to the thread.
I think we may need to ask for any objections from the team and users and may need to reword some things on the donation page though it is scrapable data as is so maybe not. As for implementation it shouldn't be difficult it is just a simple db query to get the info.


Jeff Thompson
22) Message boards : Number crunching : adequately supply or WUs: PLEASE: increase max_wus_in_progress or enable the Computing preference settings (Message 61656)
Posted 25 Apr 2014 by Jeffery M. Thompson
Post:
If you can not update the client I would try to reinstall the client and detach and reattach to the project.

Operation on a client that old can not be guaranteed.



Jeff Thompson


23) Message boards : Number crunching : Donating to Milkyway@Home (Message 61655)
Posted 25 Apr 2014 by Jeffery M. Thompson
Post:
The form should state it takes one to two weeks for the badges to appear on your profile.
The financial data is separate from this site, for security reasons. We get confirmation reports on a periodic basis hence the time window stated on the form.

As soon as I get the confirmation information I will update the database and your profile.


Did you donate on the 24th as your posting or was it early. If it is outside of the time window I need to track down the issue with the information.


Jeff Thompson
24) Message boards : Number crunching : adequately supply or WUs: PLEASE: increase max_wus_in_progress or enable the Computing preference settings (Message 61592)
Posted 23 Apr 2014 by Jeffery M. Thompson
Post:
So we have been calculating the limit in the background it was changed in the past due to problems with the time results were returned. The general calculations in the background look like this

Given 35,000 hosts, each having 8 work units that’s = 280,000 workunits in the database (each with potentially 2-3 results). And that’s only counting active work units. If we double it, it could put a big strain on the database. That’s why we have such a small limit.


Our algorithm is asynchronous so we change the work units based off the returned results. So we need to balance what we have out versus what is being returned. I am trying to gauge the scope of the issue in the user base with the thread and what other resolutions may help individual users. I do not think with the scope of the work we are doing we can change it much and have the units converge quickly.

Other projects release work units and wait for all the results. The type of data processing we use would take much longer in this format. We update the parameters we are searching based on the returned results. So our algorithm is very sensitive to the communication time with the users. We concede this will not work for everyone and we try to make it work for the most users as possible. In this case I am hoping that the user community can find a solution for the original poster on settings that helps mitigate the issues they are having.

I personally think if the boinc version is 5.8 that updating it may help with some of the problems requesting new work units but I am no familiar with the transition from 5.x clients to higher version clients.



Jeff Thompson
25) Message boards : News : New Separation Runs (Message 61509)
Posted 11 Apr 2014 by Jeffery M. Thompson
Post:
I am pulling them down and checking all the returned results.


thank you,


Jeff Thompson
26) Message boards : News : New Separation Runs (Message 61502)
Posted 10 Apr 2014 by Jeffery M. Thompson
Post:
Thank you checking out the data.

Let me know if you see some more.



27) Message boards : Number crunching : adequately supply or WUs: PLEASE: increase max_wus_in_progress or enable the Computing preference settings (Message 61487)
Posted 8 Apr 2014 by Jeffery M. Thompson
Post:
I would also check out this thread and the links in the thread to previous discussions on the issue.


http://milkyway.cs.rpi.edu/milkyway/forum_thread.php?id=1818#40607




Jeff
28) Message boards : Number crunching : adequately supply or WUs: PLEASE: increase max_wus_in_progress or enable the Computing preference settings (Message 61486)
Posted 8 Apr 2014 by Jeffery M. Thompson
Post:
I am looking into the impact of more WUs in progress on the efficiency of the server algorithm. But more specifically are others having issues with the WUs not be generated often enough or requesting new WUs.



Jeff
29) Message boards : News : New Separation Runs (Message 61462)
Posted 2 Apr 2014 by Jeffery M. Thompson
Post:
I have started separation runs ps_separation_79_DR8_Rev_7_2_001 and 002
I will be adding some more runs to the list over the next couple of days.




Let me know if you see any errors.


Jeff Thompson
30) Message boards : Number crunching : SERVER DOWN (Message 61078)
Posted 11 Feb 2014 by Jeffery M. Thompson
Post:
This was not planned maintenance.
We had a problem with the database.
The server was restarted and the services brought back up.
This happened yesterday.
The feeder was running when I left yesterday.
I was just informed it went back down so we restarted the service.
I am going through the logs to see why it went back down.


Jeff
31) Message boards : Number crunching : Server Error: Feeder not running ?? in response to update command (Message 61077)
Posted 11 Feb 2014 by Jeffery M. Thompson
Post:
This was not planned maintenance.
We had a problem with the database.
The server was restarted and the services brought back up.
This happened yesterday.
The feeder was running when I left yesterday.
I was just informed it went back down so we restarted the service.
I am going through the logs to see why it went back down.


Jeff
32) Message boards : News : Some new work units running (Message 61076)
Posted 11 Feb 2014 by Jeffery M. Thompson
Post:
The services have been restarted.

I will subscribe to the other thread so I can see updates to that.


Jeff
33) Message boards : News : Some new work units running (Message 61056)
Posted 11 Feb 2014 by Jeffery M. Thompson
Post:
The error you are getting say it can not load the function.
Your binary says it is an anonymous binary which means it was self compiled or compiled outside of our releases. The modified fit program had two iterations in its release. The bpl part is the second iteration. I would suggest running the binary with the --version option from the command line and comparing it to the source code version. From what I am seeing in the responses between your machine and the server and the error codes it looks like you need to compile the latest version of the code.




Jeff
34) Message boards : News : Some new work units running (Message 61038)
Posted 10 Feb 2014 by Jeffery M. Thompson
Post:
Yep working on that unrelated to the new units.



It should be back up now.



Jeff Thompson
35) Message boards : News : Some new work units running (Message 61033)
Posted 10 Feb 2014 by Jeffery M. Thompson
Post:
I started 4 runs
de_modfit_86_3s_modbpl_128wrap_rev_4_1_001
de_modfit_86_3s_modbpl_128wrap_rev_4_1_002
de_modfit_86_3s_128wrap_rev_4_1_001
de_modfit_86_3s_128wrap_rev_4_1_002


Let me know if they do anything crazy.


Cheers

Jeff Thompson
36) Message boards : MilkyWay@home Science : YouTube Channel (Message 60721)
Posted 11 Jan 2014 by Jeffery M. Thompson
Post:
I have posted Dr. Newberg's talk on Big Data for the Dean of Science.


http://www.youtube.com/edit?o=U&video_id=Mfz2p7BQgCg


Also we are working on posting some of the posters on MilkyWay@home science that was presented at AAS 223 those updates will be on a separate thread.



Jeff
37) Message boards : MilkyWay@home Science : YouTube Channel (Message 60628)
Posted 19 Dec 2013 by Jeffery M. Thompson
Post:
I have added links to the new RCOS talks by Jake Weiss and am in the process of editing video from a talk by Doctor Newberg. New content will continue to be placed on the Youtube channel as it becomes available. I may not always announce new material on these message boards; so if it is of your interest, I suggest subscribing to the channel or checking it periodically for updates.


Jeff Thompson
38) Message boards : News : New Separation Runs (Message 60615)
Posted 17 Dec 2013 by Jeffery M. Thompson
Post:
I have updated the bounds of the dataset.
Some of the searches were looking for a center out of dataset.
I believe this may have been causing some parameters to search in completely empty parts of the dataset.

The old searches on DR8_82_Rev_4_2_2 are down and I put up DR8_82_Rev_4_3 in their place if you have any more issues pleases let me know.



Jeff
39) Message boards : News : New Separation Runs (Message 60587)
Posted 14 Dec 2013 by Jeffery M. Thompson
Post:
Thanks for the info

There are two things I have to look at in this and I am focussing right now on the different values being returned there is also the problem of the wrong app being assigned.



Jeff
40) Message boards : News : New Separation Runs (Message 60585)
Posted 14 Dec 2013 by Jeffery M. Thompson
Post:
These applications haven't changed. So the problem is in the data and specifically in how the systems are processing an unconstrained stream.

The error rate overall for the application is not peaking or rising past a normal run.
So I am trying to find out why it is spiking for this one set of parameters and the spiking for a particular user base.

RIght now I am not seeing a pattern to hone in on what part of the system is causing the bug.

The background and the third stream set should change with each other if one is off the other should be off also.

I am going to grab some invalids on different runs also to see if it is a problem that is there in other data runs.


So I am looking into this and I will ping back a bit more on what we see.
But I have nothing conclusive to report right now. I
brought down one run on the stripe in question and am waiting a bit to bring down the other shortly. When they clear through I want to see if the problem is on other runs also.

Jeff


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