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Bryn Mawr

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Message 63690 - Posted: 13 Mar 2021, 20:40:26 UTC - in response to Message 63688.  
Last modified: 13 Mar 2021, 20:42:03 UTC

You have'n' a clue about the subject matter, have you?
I have an honours degree in Physics, so yes I do. I also have a sense of humour and an open mind.


OK, care to describe how a negative pressure (as an absolute value rather than a relative value) would work or is that an example of your humour?
Same way as electron holes in semiconductors, antimatter, etc, etc. Just because we haven't discovered it yet doesn't mean it doesn't exist.


You cannot have a lower pressure than an absolute vacuum in the same way that you cannot have a temperature lower than absolute zero. It isn’t a case of we haven’t discovered it yet - the scale stops.
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Peter Hucker

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Message 63691 - Posted: 13 Mar 2021, 22:55:42 UTC - in response to Message 63690.  

You have'n' a clue about the subject matter, have you?
I have an honours degree in Physics, so yes I do. I also have a sense of humour and an open mind.


OK, care to describe how a negative pressure (as an absolute value rather than a relative value) would work or is that an example of your humour?
Same way as electron holes in semiconductors, antimatter, etc, etc. Just because we haven't discovered it yet doesn't mean it doesn't exist.


You cannot have a lower pressure than an absolute vacuum in the same way that you cannot have a temperature lower than absolute zero. It isn’t a case of we haven’t discovered it yet - the scale stops.
The scale we currently use. If you lived back when the earth was flat, going right round would seem equally insane.
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Bryn Mawr

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Message 63693 - Posted: 14 Mar 2021, 11:14:16 UTC - in response to Message 63691.  

You have'n' a clue about the subject matter, have you?
I have an honours degree in Physics, so yes I do. I also have a sense of humour and an open mind.


OK, care to describe how a negative pressure (as an absolute value rather than a relative value) would work or is that an example of your humour?
Same way as electron holes in semiconductors, antimatter, etc, etc. Just because we haven't discovered it yet doesn't mean it doesn't exist.


You cannot have a lower pressure than an absolute vacuum in the same way that you cannot have a temperature lower than absolute zero. It isn’t a case of we haven’t discovered it yet - the scale stops.
The scale we currently use. If you lived back when the earth was flat, going right round would seem equally insane.


So explain how it is physically possible to have a pressure lower than that of an absolute vacuum or a temperature lower than absolute zero.

Back when the Earth was flat ignorance was rife, nowadays we actually understand physics and can set the scales appropriately.
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Les Bayliss
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Message 63694 - Posted: 14 Mar 2021, 11:48:27 UTC

Getting way off topic.
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Bryn Mawr

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Message 63695 - Posted: 14 Mar 2021, 12:07:50 UTC - in response to Message 63694.  

Getting way off topic.


With apologies, I shall withdraw from the conversation.
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Peter Hucker

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Message 63696 - Posted: 14 Mar 2021, 17:56:32 UTC - in response to Message 63694.  

Getting way off topic.

Pressure is off topic for a project about climate? [facepalm]
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Peter Hucker

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Message 63697 - Posted: 14 Mar 2021, 17:57:38 UTC - in response to Message 63693.  

So explain how it is physically possible to have a pressure lower than that of an absolute vacuum or a temperature lower than absolute zero.

Back when the Earth was flat ignorance was rife, nowadays we actually understand physics and can set the scales appropriately.

No, we understand more. There will be things we still yet don't know. To assume we know everything is arrogant.
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Profile Iain Inglis
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Message 63698 - Posted: 14 Mar 2021, 19:47:14 UTC - in response to Message 63696.  
Last modified: 15 Mar 2021, 8:19:34 UTC

[Peter Hucker wrote:]
Getting way off topic.

Pressure is off topic for a project about climate? [facepalm]

The title of this particular topic is "new work discussion". Batches of new work do sometimes produce errors if the parameter boundaries are being pushed and it might be appropriate to discuss those as errors. There are people here who know more than might be expected about the science of climate but most of us don't, so such a discussion might be better located in a separate thread since people concerned about new work will learn little about new work and may indeed find the information they do want obscured.

The "invalid theta" error, if I remember correctly, relates to a variable called "potential temperature". There's a helpful Wikipedia article at Potential temperature.
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Profile Dave Jackson
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Message 63699 - Posted: 15 Mar 2021, 7:51:33 UTC

Overnight, another hadcm3 crashed with invalid theta so two out of 14 I have had in this batch. Sadly I can't see if these tasks will do the same on other computers as the other attempts have crashed right at the start, one missing libraries and the other a Mac with a failed process creation message.
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Richard Haselgrove

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Message 63700 - Posted: 15 Mar 2021, 8:33:35 UTC

And another one to report - task 22025705. Error message is

NEGATIVE PRESSURE VALUE CREATED     tmp/pipe_dummy
, with the final part hidden off the edge of the screen.

Yes, I know that a negative atmospheric pressure is a physical impossibility, and that simply proves that the climate pattern being modelled isn't going to happen in reality. Strike those initial parameters from the list of possibles. Talking of new work - that particular workunit was created on 26 Sep 2019, but the initial task (created the same day) is marked 'didn't need'.

?
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Les Bayliss
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Message 63701 - Posted: 15 Mar 2021, 9:27:10 UTC - in response to Message 63700.  

That batch is something about: Optimisation_2060_spectral_runs

Failure is 71%
Hard fails (all the re-runs) is 2%
There's still 1754 running
With 866 (12%) unsent

So, interesting all round.
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Profile Dave Jackson
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Message 63702 - Posted: 15 Mar 2021, 9:52:54 UTC - in response to Message 63700.  
Last modified: 15 Mar 2021, 9:53:57 UTC

And another one to report - task 22025705. Error message is

NEGATIVE PRESSURE VALUE CREATED     tmp/pipe_dummy
, with the final part hidden off the edge of the screen.

Yes, I know that a negative atmospheric pressure is a physical impossibility, and that simply proves that the climate pattern being modelled isn't going to happen in reality. Strike those initial parameters from the list of possibles. Talking of new work - that particular workunit was created on 26 Sep 2019, but the initial task (created the same day) is marked 'didn't need'.

?


I noticed that on my two failures as well Richard.
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Profile Dave Jackson
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Message 63713 - Posted: 17 Mar 2021, 17:44:49 UTC

And apart from any resends, by tomorrow morning it looks like all the hadcm3 work will be gone.
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Profile Dave Jackson
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Message 63750 - Posted: 31 Mar 2021, 15:36:59 UTC

For reference, on my Ryzen7 in testing the HADSM4 tasks took a tad under 55 hours to complete. No particular problems noted but as always with a new model type if you do spot anything strange let us know and we can pass it on to the project.
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cadred

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Message 63752 - Posted: 31 Mar 2021, 23:10:55 UTC

Hi Les.... Damn, I haven't gotten any tasks in a Martian year, maybe a Saturnian year. How can I get some jobs? There are jobs available on the server.

Sending this from my present location: Ballooning over Greenland watching the glaciers melt.

Thanks in advance
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Les Bayliss
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Message 63753 - Posted: 1 Apr 2021, 0:06:39 UTC - in response to Message 63752.  

There were 3 research groups doing some work that used a Windows based climate program. They all "disappeared" early last year.
Those that are still active, are doing a different type of research, and these programs are written for Linux.
So, all of the work on the site is Linux.

Although, now and then, someone is sending us some work that also runs on Macs
There's a few of these at the moment.

And the thing to keep in mind is, that all of this BOINC stuff is NOT part of their normal work; it's something additional that they've learned about from conferences, and are trying.
Finances and servers and net access permitting.
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Harri Liljeroos
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Message 63759 - Posted: 1 Apr 2021, 8:00:21 UTC - in response to Message 63752.  

Hi Les.... Damn, I haven't gotten any tasks in a Martian year, maybe a Saturnian year. How can I get some jobs? There are jobs available on the server.

Sending this from my present location: Ballooning over Greenland watching the glaciers melt.

Thanks in advance

The current work is for Linux only.
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keputnam

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Message 63964 - Posted: 13 May 2021, 18:54:39 UTC - in response to Message 63759.  
Last modified: 13 May 2021, 18:55:09 UTC

Really?

I've got a WU running on Win10 right now

Tho I will admit it's the first in a very long time

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Jean-David Beyer

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Message 63965 - Posted: 13 May 2021, 20:53:57 UTC - in response to Message 63964.  

I got one a while ago. I believe it is called a re-run.
Workunit 12033489
name 	                wah2_sam50_a0dd_201312_25_880_012033489
application 	        Weather At Home 2 (wah2)
created 	        2 Nov 2020, 11:45:41 UTC
canonical result 	21988408
granted credit 	        0.00
minimum quorum 	        1
initial replication 	1
max # of error/total/success tasks 	3, 2, 1
Task       Computer  Sent	                Time reported or deadline Status	        Run time (sec)	CPU time (sec)	Credit	 Application
21988408  1512658    26 Dec 2020, 7:27:20 UTC 	 1 Jan 2021, 7:35:21 UTC  Completed 	        514,851.38 	510,503.00 	19,018.14  Weather At Home 2 (wah2) v8.24
windows_intelx86
21959016  1190093     2 Nov 2020, 11:59:28 UTC 	26 Dec 2020, 7:27:11 UTC  Error while computing  45,421.24 	 43,275.98 	  --- 	   Weather At Home 2 (wah2) v8.24
windows_intelx86

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Profile Dave Jackson
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Message 64008 - Posted: 28 May 2021, 9:58:57 UTC

#907 being re-sent now.
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