Re: Error message: Possible new lattice rounding issue

From: Alfredo Ferrari <alfredo.ferrari_at_cern.ch>
Date: Thu, 27 Nov 2008 20:18:44 +0100

Hi Konstantin

it means there are rounding issues. Some of them are unavoidable (ie when
a particle is flying almost parallel to a boundary in strict proximity of
the boundary). Whether to take them seriously depends on their frequency.
How "big" is your geonetry, that is which is the largest dimension in it
(parat blackhole)?

                 Ciao
                Alfredo

  On Thu, 27 Nov 2008, Konstantin Batkov wrote:

> Hello,
>
> I get the following numerous messages in the .err file:
>
> !!! Possible new lattice rounding issue
> IRNEXT, IRLTGG, SNBMIN, SLTMIN, SNBDIF, DSMLTT 6 30
> 6.3875582558765159E-04 0.1177451034561756
> 4.5894366377998569E-10 3.0000000000000000E-10
> !!! Possible lattice rounding issue-2 509 33 1071 1071
> 0.452165057660417 0.452165058407710 3.000000000000000E-10
> !!! Possible lattice rounding issue-2 480 33 1071 1071
> 3.547603323605671E-02 3.547603402424018E-02 3.000000000000000E-10
> !!! Possible new lattice rounding issue
> IRNEXT, IRLTGG, SNBMIN, SLTMIN, SNBDIF, DSMLTT 6 33
> 6.9390028149804092E-03 0.1184552680758738
> 4.8256386993988931E-10 3.0000000000000000E-10
>
> What is the meaning of these messages? Does it mean that my lattice cards
> are not described correctly?
> I have not found any problems with the geometry debugger.
>
> Thank you,
>
> Konstantin
>
>
Received on Thu Dec 04 2008 - 09:26:01 CET

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