Posts by mo.v

1) Message boards : Questions and problems : How much CPU % do you allow your BOINC app to use? (Message 54120)
Posted 15 May 2014 by mo.v
You may want to decrease the % crunching you do in summer and increase it in winter, turning off the space heating in the room. If the room's space heating is provided by electricity, it probably hardly costs more to let the computer work harder and warm up the room. If the space heating is provided by gas, that will be cheaper.

The older computers will use more electricity to process the same tasks; newer computers are much more efficient.
2) Message boards : Questions and problems : Error al limitar el número de procesadores con tareas multiprocesador (Failed to limit the number of processors with multiprocessor tasks) (Message 54073)
Posted 12 May 2014 by mo.v
The problem isn't only Collatz. I have a laptop with an i7 and 8 cores but I can only allow one core to crunch in order to keep the CPU temp down. I use it for CPDN, and also Einstein NVidia tasks because it has a good GPU.

If I set the CPU % to 12.5% that should limit the number of cores to one (though in fact Windows spreads the usage over 4 cores for temperature management). While only a climate model is running Task Manager shows CPU usage fluctuating round 12.5%.

When an Einstein GPU task using 0.2 of CPU kicks in, the total usage goes up to around 14.5 or 15%. This is not what I specified. It sends CPU temperature above what I want and should not happen. The only way I can keep the temperature down while using both CPU and GPU is by also limiting CPU time to 85%.

I don't think it's fair to expect participants to fiddle around with the effect of these settings while also studying what happens to the CPU and GPU temperatures.
3) Message boards : Questions and problems : Error al limitar el número de procesadores con tareas multiprocesador (Failed to limit the number of processors with multiprocessor tasks) (Message 54066)
Posted 12 May 2014 by mo.v
Hola Juan

Perdóneme el retraso en contester pero he estado fuera durante un mes.

Si no me equivoco, resulta que estas tareas multiprocesador de Collatz no respetan lo que Ud ha mandado en las Preferencias en la pestaña de Utilización de los Procesadores.

He buscado su cuenta en el proyecto Collatz para descubrir cuales son las tareas que le dan este problema y quizás intentar reproducirlo en mi ordinador, pero veo que sus ordinador(es) están amagados:

¿Cómo se llaman las tareas problemáticas?

¿Ha explicado el problema en el foro Collatz?

¿Podría por favor cambiar sus preferencias i en lugar de limitar el número de procesadores al 50%, poner esta cifra al 100% y limitar el tiempo de CPU al 50%, a ver lo que pasa entonces?


Juan has found that his Collatz multiprocessor tasks do not respect his Preferences setting of 50% of CPUs, according to which his tasks should use only 4 CPUs of the 8 available. He has found by checking Windows Task Manager that these tasks use 100% of all 8 CPUs. This situation is further demonstrated by the fact that when he opens the Properties button of one of these tasks the CPU time shown there is the Elapsed time X 8.

In addition, when one of these tasks is waiting to run or suspended, the elapsed and remaining times continue to change, and Task Manager shows 50% usage.

He has found that Yafu multiprocessor tasks do respect his preferences regarding % of CPUs.

I have looked at Juan's Collatz account in the hope of identifying which application type he's been running, which might allow me to attempt to reproduce the problem on my own computer. But his computer(s) are hidden.

I've asked:

* the name of the problem task types

* whether he's asked about this on the Collatz forum

* whether in his preferences he could reduce CPU time to 50% instead of limiting the number of processors to 50%, to see whether the effect is the same.
4) Message boards : Projects : News on Project Outages (Message 53542)
Posted 8 Apr 2014 by mo.v

Andy has said:

Hi All,

The Beta server has a serious issue at present that's preventing it being updated, I am afraid it is going to have to remain offline until we can look at it again tomorrow.

5) Message boards : Questions and problems : NFS@Home, OProject@Home, LHC@home, RNAWorld, Enigma@Home, NumberFields@home all not getting new tasks (Message 52033)
Posted 19 Jan 2014 by mo.v
In your BOINC Manager advanced view, if you go to the Projects tab and highlight a project there, a link to its home page will open in the left-hand sidebar. Like this for example:

On that home page you'll usually see a link to the project's Server status page, like this:

As you can see there are lots of available tasks, though some projects spend periods without issuing work. However, the NFS tasks aren't listed by OS se we don't know whether they're for Windows, Linux or Mac or all of these. This is why Rebirther asked for that information.

To get to the log file, in BOINC Manager advanced view click on Advanced at the top. In the menu that opens up click on Event log at the bottom. A new window will open showing what's been happening. You can highlight a project and then at the bottom click on the button for Show only this project. That makes it easier to read what the situation is for each project. You should be able to see whether your computer has been requesting work and what reply it received for each project.
6) Message boards : Projects : News on Project Outages (Message 51985)
Posted 13 Jan 2014 by mo.v
CPDN main project

Things are up and running again apart from one upload server. Jonathan now needs to make an extra backup and will be closing down the databases again within an hour from now. He expects this extra backup to be completed within 24 hours.
7) Message boards : Projects : News on Project Outages (Message 51947)
Posted 8 Jan 2014 by mo.v
CPDN main project

Jonathan says:

Jonathan says:

Hi, I have to take the project database off-line for the first of (hopefully only) two upgrades at the end of this week.
I will schedule the downtime from:

12 Noon GMT on 10 Jan
12 Noon on 13 Jan 2014.

There will be no database access during this downtime.

For those who are interested, this the first step towards retiring our old database server, and moving her functions over to the virtualised infrastructure at the Oxford e-Research Centre.

Jonathan Miller
CPDN System-Administrator
8) Message boards : Questions and problems : Virtual Fortran run-time error (Message 51945)
Posted 8 Jan 2014 by mo.v
Expie, there's a CPDN thread for this error here.
9) Message boards : Questions and problems : BOINC in the browser? (Message 51804)
Posted 23 Dec 2013 by mo.v
People who join through Progress thru Processors go through a similar process to those who join CPDN via its Weather@Home subsection. They see BOINC projects promoted on a website eg Facebook, or in the press, and are invited to click on a link to go through the signing-up process. But they still have to download BOINC and will have a BOINC Manager whether they're aware of it or not.

I'm not too keen on this joining method unless it's only used for projects that have very robust tasks which can survive the computer owner having no idea what they're doing, taking no precautions to increase the tasks' chance of success, not knowing about the possibility of using forums as a means of asking for help, and indeed not knowing whether their tasks are completing or crashing.

In my view, joining through the BOINC website requires the new user to be slightly more conscious of what it all consists of. This must surely increase the chance of successful task processing.
10) Message boards : The Lounge : Not available (Message 50611)
Posted 23 Sep 2013 by mo.v
How are you getting on after that, Jord?
11) Message boards : Projects : News on Project Outages (Message 50609)
Posted 23 Sep 2013 by mo.v
CPDN main project

Jonathan says:

'The servers running on our VM infrastructure seem to have rebooted at 4 am BST on 22 Sept.

The main webserver failed to re-mount its NFS partitions, upon which the website resides. This is now fixed, and I am making investigations.'

Edit: Thyme Lawn posted before me. I wanted to delete this message but can't see how to do this now.
12) Message boards : Projects : News on Project Outages (Message 50600)
Posted 22 Sep 2013 by mo.v
CPDN main project

CPDN BOINC webpages are down and the server doesn't appear to be accepting trickles. At the moment we don't know the reason.

The science website is still available for anyone wanting a good weekend read, but it is separate from the CPDN BOINC pages.
13) Message boards : Projects : News on Project Outages (Message 49852)
Posted 12 Jul 2013 by mo.v
CPDN main project

The problem is with the Climateapps2 server disks. This is causing climate models to be unable to report and the scheduler cannot send new work to computers. The Server Status page is down as well as the CPDN-BOINC forum and other pages.

I expect Climateapps2 to be down all weekend.
14) Message boards : Questions and problems : Completed data will not be uploaded (Message 48962)
Posted 3 May 2013 by mo.v
Which projects? Have you looked at the project server status pages? Asked on their forums whether there's an uploading problem? I'd try this for each problem project.
15) Message boards : Questions and problems : Computation Error (Message 48954)
Posted 3 May 2013 by mo.v
I don't think Windows 8 could in itself cause GPU computation errors because if this were the case hundreds of people would be posting here to ask why.

What are your GPU specs? Which projects are you talking about? You might do better to post on the forum of the project(s) affected.
16) Message boards : Questions and problems : Download Failures (Message 48771)
Posted 22 Apr 2013 by mo.v
I think you should ask on the forum of the project in question. If the computer is succeeding in downloading half its tasks this suggests to me that there's nothing wrong with the internet connection and the problem may stem from the project itself. There could be a project server problem, but checksum errors are likely to indicate something wrong within the application (task) itself.

There was fairly recently a problem where some BOINC alpha versions were incompatible with certain CPDN model types, leading to repeated checksum errors, but this has now been fixed. If CPDN downloads are your problem please confirm this here and then post about it on the CPDN forum so we can see whether there are other problems as well.
17) Message boards : Questions and problems : What is the internet usage of Boinc? (Message 48758)
Posted 22 Apr 2013 by mo.v
John, see whether you can look at your account with your internet service provider (eg BT). You may well be able to see a daily and monthly list of exactly how much bandwidth (ie uploads + downloads) you're using. That section of your account may be called something like network usage.

It sounds as if your computer has 8 cores. If you run climateprediction climate models all the time on all 8 cores you will stay well inside your 40GB limit. You'll find that whichever project you get tasks from, the tasks download files before starting and that takes up bandwidth. Then when the tasks have finished they upload the completed files and that takes bandwidth too. While the tasks are running they use no bandwidth ie they're not transferring any data. They're just working on your computer to produce some results/data.

In BOINC Manager in the Transfers window/tab while files are uploading or downloading you see so many kb per second, kbps. That's the speed of transfer, not the amount or quantity of data. It's only the amount ie the size of the files that adds up towards your limit. In the same Transfers tab the size of each file to be transferred will be listed.

Whenever you want you can turn off Network Activity temporarily to give yourself a chance to look at the size of the files to be uploaded before you let them upload.

I don't think you need to worry about how much disk space your tasks from your projects are taking up. If your computer has 8 cores it's probably nice and newish; most new computers have lots and lots of disk space.

If you find that the task files from one particular project look too big for comfort, you can go into the Projects tab of BOINC Manager and set that Project to No New Tasks. That will be the end of that until you decide otherwise.

Hope that helps a bit.
18) Message boards : The Lounge : Word Link (Message 48747)
Posted 21 Apr 2013 by mo.v
19) Message boards : Questions and problems : Information about Bonic Tasks (Message 48738)
Posted 21 Apr 2013 by mo.v
But in Catalan bonic means pretty or beautiful:
20) Message boards : Projects : News on Project Outages (Message 48650)
Posted 16 Apr 2013 by mo.v
CPDN main project

All the CPDN servers are now running.

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