[mcstas-users] Still problem running > 4e9 source neutrons...

[Wildgruber, Christoph U.]

Hi everybody,

I was (trying to) follow(ing) Peter’s suggestion and updated the ‘xcode command line tools’ (and reinstalled xcode too)
on my M2 MBP. The the same instrument runs fine with 5e8 source neutrons (I did not try yet 4e9, but I will)
with 5e9 however I get the same error message(s) I got yesterday before the ‘xcode’ update (copy from mcgui-py)
I am running single threaded btw…:


Incoherent: incCube: Vc=13.827 [Angs] sigma_abs=0.001 [barn] sigma_inc=5 [barn]

Monitor_nD: Crystal_15_out is a Intensity Crystal index Neutron_ID Position Position Position Velocity Velocity Velocity Time_Of_Flight Monitor (Square).

Monitor_nD: version $Revision$ with options=user1,n,x,y,z,vx,vy,vz,t,list all neutrons verbose

Monitor_nD: Collimator_in is a Intensity Crystal index Neutron_ID Position Position Position Velocity Velocity Velocity Time_Of_Flight Monitor (Square).

Monitor_nD: version $Revision$ with options=user1,n,x,y,z,vx,vy,vz,t,list all neutrons verbose

Monitor_nD: Collimator_out is a Intensity Crystal index Neutron_ID Position Position Position Velocity Velocity Velocity Time_Of_Flight Monitor (Square).

Monitor_nD: version $Revision$ with options=user1,n,x,y,z,vx,vy,vz,t,list all neutrons verbose



Trace ETA (single process) 1.27806 [h]

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# 3.5.24, git: [pid 95430] Signal 11 detected SIGSEGV (Mem Error)

# Simulation: BMSPEC_Coll (BMSPEC_parallelBeam_3.35_2.0_xtal15.instr)

# Breakpoint: [_Crystal_15_out_trace] component Crystal_15_out=Monitor_nD() TRACE [/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/resources/monitors/Monitor_nD.comp:403] 0.00 % ( 0.0/5000000000.0)

# Date: Thu May 1 10:24:24 2025

# Started: Thu May 1 09:18:16 2025

# Last I/O Error: No such file or directory

INFO: call to ./BMSPEC_parallelBeam_3.35_2.0_xtal15.out failed with Command './BMSPEC_parallelBeam_3.35_2.0_xtal15.out --trace=0 --ncount=5000000000.0 --dir=/Users/cwl/boxColl_parallelBeams_dE_xtal_15_HiQ/BMSPEC_parallelBeam_3.35_2.0_xtal15_20250501_091816 --format=McCode --bufsiz=10000000 E_0=3.35 delta_E=2 sample_pos=65 sample_size=0.005 xtal_target_wdth=0.08 xtal_target_hght=0.06 mos=60 collDiv=5 twoThetaTotal=112.797 signalConeAngle=40 zMin=1.5 zMax=2.3 crystalLength=0.07 crystLenScale=1 accTheta=0.001 detOffsetX=2.2 detOffsetZ=2.229 energyLoss=0 excWidth=0' died with <Signals.SIGQUIT: 3>.

Traceback (most recent call last):

File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mcrun.py", line 612, in <module>

main()

File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mcrun.py", line 584, in main

mcstas.run() # in mccode.py

^^^^^^^^^^^^

File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mccode.py", line 341, in run

return self.runMPI(args, pipe, override_mpi)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mccode.py", line 395, in runMPI

return Process(binpath).run(args, pipe=pipe)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mccode.py", line 77, in run

raise err

File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mccode.py", line 73, in run

proc = run(command, shell=True, check=True, text=True, capture_output=pipe)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/lib/python3.12/subprocess.py", line 573, in run

raise CalledProcessError(retcode, process.args,

subprocess.CalledProcessError: Command './BMSPEC_parallelBeam_3.35_2.0_xtal15.out --trace=0 --ncount=5000000000.0 --dir=/Users/cwl/boxColl_parallelBeams_dE_xtal_15_HiQ/BMSPEC_parallelBeam_3.35_2.0_xtal15_20250501_091816 --format=McCode --bufsiz=10000000 E_0=3.35 delta_E=2 sample_pos=65 sample_size=0.005 xtal_target_wdth=0.08 xtal_target_hght=0.06 mos=60 collDiv=5 twoThetaTotal=112.797 signalConeAngle=40 zMin=1.5 zMax=2.3 crystalLength=0.07 crystLenScale=1 accTheta=0.001 detOffsetX=2.2 detOffsetZ=2.229 energyLoss=0 excWidth=0' died with <Signals.SIGQUIT: 3>.


It looks like it running just fine til the end but then throws a ‘died with <Signals.SIGQUIT: 3’  …

Any suggestion what I could/should try?

If a code snippet would help I can try to provide it but the error message suggests to me it is something different…


Thanks folks,

Uli

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