Dear Alexander,
your geometry definition could be improved a lot.
The problem is the subtraction of zones defined by parenthesis in the vacuum definition.
Parentheses require expansions and these implies a diverging number of terms and therefore crashes…
In general, one can always avoid the use of parentheses.
Please find your input file with a fixed geometry that runs with no problem.
Few additional comments:
- use meaningful names for bodies and regions: it would be easier to debug/maintain a geometry
- your hexagonal plates are identical and aligned: to define the hexagon you only need 6 planes that you can reuse for each plate
- prefer XYP, YZP, XZP to PLA: again it would be easier to maintain the geometry
Best regards, luigi
> On 2 Mar 2017, at 21:32, panov_at_dec1.sinp.msu.ru wrote:
>
> Dear All,
>
> I need a geometry represented by a pack of thin hexagonal silicon plates. There is no tool in FLUKA to construct a hexagonal prism, therefore I construct each hexagonal plate (actually a prism with a small height) by eight generic half-spaces (PLA). To define such a geometry I have to use name-based free-format notation together with parentheses to define vacuum region. My construction works very well with 1,2,3 and 4 plates in the pack, but it does not work with 5 and more plates (I actually need 60 plates as a minimum). A task with more than 4 plates produces segmentation violation error after 5-10 seconds of normal running. The error message about segmentation violation appears in the log-file, not in the console:
>
> --------------------------
> Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
>
> Backtrace for this error:
> #0 0x7FD05A82AE08
> #1 0x7FD05A829F90
> #2 0x7FD059F5C4AF
> #3 0x7FD05A073F45
> #4 0x7ACC0B in copytx_ at copytx.f:48
> #5 0x5E2A14 in rpnrul_ at rpnrul.f:157 (discriminator 2)
> #6 0x5E1125 in rpnorm_ at rpnorm.f:57
> #7 0x5D163D in flkcgi_ at flkcgi.f:1525
> #8 0x4DC867 in geoinp_ at geoinp.f:238
> #9 0x405E09 in flukam_ at flukam.f:2961
> #10 0x40223B in fluka at fluka.f:289
> #11 0x7FD059F4782F
> -----------------------------
>
> Can you help to overcome this problem? I send two collections of files, for normal work with four plates and for error with five plates.
>
> Thank you in advance,
> Alexander
> <Work4.zip><DoesNotWork5.zip>
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Received on Fri Mar 03 2017 - 11:51:31 CET