RE: Program received signal SIGFPE: Floating-point exception - erroneous arithmetic operation.

From: Vasilis Vlachoudis <Vasilis.Vlachoudis_at_cern.ch>
Date: Fri, 10 May 2013 13:48:59 +0000

Hi Francesca,

the files you have send seemed somehow corrupted.
e.g.
source.f: all continuation lines are shifted by one space as well some lines extend over the column 72
PXGM.inp: the geometry is written in the old COMBINAT format with all bodies/regions shifted by one space which makes fluka to crash immediately.

Now the real problem should come from the fact that you didn't specify anything as beam energy in the BEAM card. Fluka is using this information (even if you use a custom SOURCE routine) for initializing all cross sections, dE/dx tabulations etc.
In your case FLUKA is using 200 GeV/c so it could be that you have a particle generated from your source routine with higher momentum than 200 GeV/c.

Best Regards
Vasilis

________________________________________
From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on behalf of francesca.belloni_at_libero.it [francesca.belloni_at_libero.it]
Sent: 08 May 2013 10:38
To: fluka-discuss_at_fluka.org
Subject: Program received signal SIGFPE: Floating-point exception - erroneous arithmetic operation.

Dear all,
       I had set up a simulation where neutrons pass through
different media and strike a 10B target, producing
7LI and 4He. These charged particles enter a gas
and the energy deposited is scored. I had started with 9E+03 incident
neutrons,
and evertything seemed to work fine. When I tried to get more statistics, a
problem
showed up and I do not understand where it comes from.
The run is aborted more than one hour after it started running (at least on
the server I am using)


In the *.err file, here and there, the meassage
   Stepop, Pla < Pthrij!! ij, mmat, ekin, Pla, Pthrij
appears and in the *.log file the following message is given

Program received signal SIGFPE: Floating-point exception - erroneous
arithmetic operation.

Backtrace for this error:
#0 0x2BA5DDB6DF37
#1 0x2BA5DDB6E504
#2 0x33DD8302CF
#3 0x33DDC10712
#4 0x33DDC23A03
#5 0x4D30AC in zffctv_
#6 0x4FA780 in kaskad_
#7 0x4F3C16 in feeder_
#8 0x40E8FA in flukam_

    I am running the simulation on a server 64 bits
(uname -a
Linux dapint 2.6.18-194.11.4.el5 #1 SMP Tue Sep 21 06:46:41 EDT 2010 x86_64
x86_64 x86_64 GNU/Linux)
The ROOT version is 5.18/00 and fluka version fluka2011.2-linux-gfor64bit-
gcc451-AA.tar.gz
The variables FLUFOR and GFORFLU are set to
setenv FLUFOR gfortran
setenv GFORFLU mio-gfortran
with gfortran -v : gcc version 4.1.2 (GCC)
and mio-gfortran -v:gcc version 4.5.1 (GCC)

      Could anyone give a look and help me, please?

Thank you,
best regards,
Francesca
Received on Fri May 10 2013 - 18:14:34 CEST