[CIG-SHORT] An error when running Pylith .

[Charles Williams]

It can also happen if there is too much fault curvature.  For this to happen, there must be 3 faces on the fault, which means pretty extreme curvature or your cell size is not fine enough for the fault geometry you are representing.

Charles


On 27/10/2011, at 4:29 AM, Matthew Knepley wrote:

> On Wed, Oct 26, 2011 at 10:13 AM, faqidiao <faqidiao at asch.whigg.ac.cn> wrote:
> Brad,
>   
>    Thanks for your rapid response. I try my problem with new version (pylith-1.6.1). However, error still occurred.
> Please find the attached error information.  I agree with you, this perhaps induced by the fault topology. BUT,
> I have checked my Lagrit running and it's result , all seems well. So, I still  puzzled about this.
>  
>    I also attached my problem, and I don't know whether  you have time to run my model and check where the
> problem is?
> 
> Here is the problem. Somewhere in your mesh, there is a terahedron with all 4 vertices on a fault. This can happen
> because
> 
>   a) there is a problem in your fault description
> 
>   b) You have two faults which get too close to each other
> 
>   Thanks,
> 
>      Matt
>  
>   
>  
>   Thank you again!
>  
>   Faqi Diao
>  
>  
>  
> From: Brad Aagaard
> Date: 2011-10-26 12:45
> To: faqidiao
> CC: cig-short
> Subject: Re: [CIG-SHORT] An error when running Pylith .
> Faqi,
>  
> The error message suggests that the nodeset/pset you are using to create the fault has a problem. This can happen if the fault has holes in it or there is a problem with the topology of the mesh. Another possibility is that there is a bug. We have made a lot of improvements since v1.4.2, so I recommend that you use the current release (v.1.6.1) and see if you still get the same error message.
>  
> Regards,
> Brad
>  
>  
>  -----faqidiao <faqidiao at asch.whigg.ac.cn> wrote: ----- 
>  
>  ======================= 
>  To: cig-short <cig-short at geodynamics.org>
>  From: faqidiao <faqidiao at asch.whigg.ac.cn>
>  Date: 10/25/2011 07:07PM
>   Subject: [CIG-SHORT] An error when running Pylith .
>  ======================= 
>  
>  Hi all,
>   Recently, I met a problem when running Pylith1.4.2, and I don't know how to fix
> it, though I have paid much time.
>   Attached is the error message, can you have a look and give some suggestions
> on how to solve the problem?
>  
>   Thank you in advance!
>  
>   Best regards,
>   Faqi Diao_______________________________________________
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>  
> [attachment(s) "error message.png" removed by Brad Aagaard/GD/USGS/DOI]=
> 
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> 
> 
> -- 
> What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
> -- Norbert Wiener
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Charles A. Williams
Scientist
GNS Science
1 Fairway Drive, Avalon
PO Box 30368
Lower Hutt  5040
New Zealand
ph (office): 0064-4570-4566
fax (office): 0064-4570-4600
C.Williams at gns.cri.nz

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