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Questions and Answers : Getting started : New to Climate Prediction - No tasks for a week
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ohmbroo
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Message 63456 - Posted: 2 Feb 2021, 14:12:29 UTC

Greetings!
Been processing other projects for years. Thought I would try climate prediction, since SETI is down.
Started on one computer, no work units for weeks, tried another computer, still nothing.
Server status shows 7,000+ available. Anyone?
thanks,
Edward - TI-19045
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Message 63460 - Posted: 2 Feb 2021, 17:09:00 UTC - in response to Message 63456.  

Welcome to the project. In your post you don’t state what OS your are running. If it is Windows, the reason that you have not received any work is because there is none. There have only been a very few batches in the last 8 months since Covid started. The batches tend to be small (3000 WU’s or so) and they go fast. Three batches were released about 10 day ago and were snapped up in about 3 hour.

Good Luck.
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Les Bayliss
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Message 63461 - Posted: 2 Feb 2021, 17:09:13 UTC - in response to Message 63456.  

Only Linux work is available at present.
Windows work is few and far between.
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ohmbroo
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Message 63471 - Posted: 2 Feb 2021, 23:21:25 UTC - in response to Message 63460.  

Thanks for the info. Is there some reason for the OS segregation?
My first guess would be the Linux compatible Bionic would have something to do with this.
At any rate, I have linux here and there and also Virtual Machine as needed.
What are the constraints on the Linux OS and/or platform running it?

Cheers!
TI-19045
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Les Bayliss
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Message 63472 - Posted: 2 Feb 2021, 23:56:32 UTC - in response to Message 63471.  

Each model type is OS specific because it was decided a few years ago that there wasn't the person power to write code for all 3 OSs and test them. And there are many model types used here.
And Unix/Linux is possibly what the researchers learned when they were still in Uni.

The only constraint is that the models are 32 bit, so you need to make sure you have the necessary files.
There are 2 threads at the top of the Linux section.
One is links to files for different types of Linux, the other is a discussion thread if needed.

I've found over the last few years that Linux Mint seems to load all the needed files without my help.
If you just load Linux, download a model, and run it, it will crash in about 6 seconds if it doesn't have the "usual problem file". And you can see this in the task list for that model.
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ohmbroo
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Message 63476 - Posted: 3 Feb 2021, 2:44:45 UTC - in response to Message 63472.  

Les,

Thanks for the extra info. I have a couple older 32 bit architecture laptops that can handle Linux Mint.
I'll work on that and see what I can do to contribute.

Cheers,
TI-19045
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ohmbroo
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Message 63490 - Posted: 5 Feb 2021, 14:26:59 UTC - in response to Message 63472.  

Have BOINC running successfully on an HP-mini-311 with Linux Mint 17.1 Rebecca.
We will see if it grabs any work units.
Thanks for all the help folks!
Cheers!
TI-19045
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Message 63491 - Posted: 5 Feb 2021, 15:18:59 UTC - in response to Message 63490.  

The specs for that PC may not be enough. Models currently available take up 1.3 GB of memory per task and take quite a while to run even on fast PCs. If you want to continue, I'm assuming you installed the 32 bit version of Linux Mint. If not, you'll have to run

sudo apt-get install lib32z1 lib32ncurses5 lib32bz2-1.0 libstdc++6 libstdc++5 freeglut3

in order to install the right 32 bit libraries. Good luck.
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ohmbroo
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Message 63495 - Posted: 6 Feb 2021, 1:33:15 UTC - in response to Message 63491.  

It is running, and slowly of course. Has a single core with a 1.333 GHz clock with 3 GB RAM with a 160GB HDD.
Almost at 0.01% after 5 hours.
I have a couple more 32 bit laptops that I scrubbed for friends. I may use one of those if faster.
At least I learned more about this effort and installed on a linux.

Thanks and Cheers!
TI-19045
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Profile Dave Jackson
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Message 63498 - Posted: 6 Feb 2021, 14:08:16 UTC - in response to Message 63495.  

May be slow but still likely to finish before the server runs out of Linux work. My laptop takes about a month to finish tasks compared to my desktop which is about a quarter of that.
Please do not private message myself or other moderators for help. This limits the number of people who are able to help and deprives others who may benefit from the answer.
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ohmbroo
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Message 63500 - Posted: 6 Feb 2021, 19:30:53 UTC

MMM. OK,
I don't know the forums well enough to know if I made a private message my clicking on "REPLY".
I see a very specific "Private messages: Inbox · Write" set of options in the upper left. This is where, as a newbee, I would think is the route to a private message.
I would suggest changing the REPLY button to REPLY DIRECT or something else that makes better design.
Sorry for the inconvenience.

I got a newer machine with 2 cores running a Intel Core Duo P8600 at 2.4GHz, 4GB RAM. Has a spinning hard drive at 5400 rpm.
It is already at 0.25% after 1.5 hours. I could swap the HDD out with 120GB SDD for improvement.

cheers
TI-19045
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Les Bayliss
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Message 63501 - Posted: 6 Feb 2021, 20:40:56 UTC - in response to Message 63500.  

The Reply button is for answering the specific post containing it.
It'll tell you that you've done this, by saying " in response to Message" with the message number, at the top of the new post.
Look at the top of this post.

Another consideration reqarding processor speed:
With a very slow computer, you may get there eventually, and you'll get credit along the way, BUT your data may never get used.
For instance, there are some batches at present from students at Oxford, who are doing a climate project.
They're going to want the data ASAP, so they can write their papers.
Getting it in a years time isn't going to be of use.

This project is going for more and more detail in it's work, which requires larger storage, and faster processors.
3.5G to 4G is starting to be a necessity now.

And the N216 resolution models have been found to like lots of L3 cache.
We discussed this in this thread: UK Met Office HadAM4 at N216 resolution
The relevant part starts near the start of page 1.
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ohmbroo
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Message 63503 - Posted: 7 Feb 2021, 15:45:21 UTC

Les,

Thanks for the extra info. I really just wanted to make some use of some of the better legacy laptops I have.
I have found I can get BOINC to work, but will have to research projects and be careful of which ones, if any, that I can help in a timely manner.
The best old laptop I got has gotten just over 3% in 16 hours of time,
I'll abort the work unit for scholastic expediencies.

Cheers and safety!
TI-19045
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Message 63509 - Posted: 8 Feb 2021, 4:47:44 UTC - in response to Message 63500.  

MMM. OK,
I don't know the forums well enough to know if I made a private message my clicking on "REPLY".
I see a very specific "Private messages: Inbox · Write" set of options in the upper left. This is where, as a newbee, I would think is the route to a private message.
I would suggest changing the REPLY button to REPLY DIRECT or something else that makes better design.
Sorry for the inconvenience.

I got a newer machine with 2 cores running a Intel Core Duo P8600 at 2.4GHz, 4GB RAM. Has a spinning hard drive at 5400 rpm.
It is already at 0.25% after 1.5 hours. I could swap the HDD out with 120GB SDD for improvement.

cheers

__________________

No need to lose heart. Swap out the HDD for an SSD which will cut your time, at least by half. Increase the RAM to at least 8GB if you want to run two WU's. Increased RAM will cut down on cache usage. Your Time will increase phenomenally. Where will you find the RAM though?
I am running an Intel with 2.1 GHz base speed and it takes ten days but I have the RAM and the SSD.
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Message 63516 - Posted: 8 Feb 2021, 17:53:35 UTC

I would suggest changing the REPLY button to REPLY DIRECT or something else that makes better design.
Sorry for the inconvenience.


I don't know how easy that is to do. The CPDN forums use the standard BOINC server software rather than reinvent the wheel as do most other projects though there are a few who use their own forum software and some who have highly customised versions of it for their own convenience. Even if relatively easy to do, I suspect it wouldn't be high on the priority list at Oxford. There would also be the downside for those who participate in several projects that use the standard setup that there wouldn't be a uniform interface across projects.
Please do not private message myself or other moderators for help. This limits the number of people who are able to help and deprives others who may benefit from the answer.
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Message 63922 - Posted: 29 Apr 2021, 20:02:27 UTC
Last modified: 29 Apr 2021, 20:04:44 UTC

Hey there,

We tried for a few days on a Linux computer to get tasks without luck. Would you still recommend to install Linux instead to guarantee a better chance to get tasks?

Thanks a lot. Any help would be much appreciated!
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Les Bayliss
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Message 63923 - Posted: 29 Apr 2021, 20:32:18 UTC - in response to Message 63922.  

In that case, your computer probably doesn't have some resource that these Linux models need.
Like lots of memory per model, lots of L3 cache per model, etc.

As your computers are hidden, we can't help further.
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Message 64488 - Posted: 22 Sep 2021, 20:23:45 UTC

Hello,
I've just joined cpdn, but I've been running other projects for years. I have successfully attached six machines today; all of them running Devuan and all of them have the 32-bit libraries installed. The lowest spec is an AMD-X2 (2 cores,2 threads) with 3G memory, two i5s (4 cores, 4 threads) with 8G each, an i7 (4 cores, 8 threads) with 16G, a twin xeon 6-core (24 threads) with 32G and a /var/lib/boinc-client partition of 200G. They are all successfully attached and running cpdn without issue. The sixth machine is a twin xeon 8-core (32 threads) with 128G memory and a 200G boinc-client partition, but it has failed to download any work despite trying several times during the day. It now has a waiting time of >60h (>3000 secs) before requesting any further work.
Two questions:
1. Any suggestions why this machine does not get any work when the other machines are running 37 units between them and there are 484 units ready to send? I cannot see that it is due to a machine-spec limitation as it's the highest spec of the lot.
2. Is there any way to circumvent the 60h wait, so that I can try and troubleshoot the failure of the machine to download any work units?

Many thanks

leloft
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Les Bayliss
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Message 64489 - Posted: 22 Sep 2021, 21:33:37 UTC - in response to Message 64488.  

Q1 What is the message(s) that you get in Event log when the computer asks for work?

Q2 No.
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Message 64490 - Posted: 22 Sep 2021, 22:41:35 UTC - in response to Message 64488.  

One other thing, your Athlon X2 with only 3 GB of memory is going to have trouble running two of the hadam4h models at a time. They each take up about 1.4 GB of memory when running. I see you only downloaded one on that PC, which is good.

Although even running one at a time, that processor may take over a month to finish one task.
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