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<p class="MsoNormal">Hi Peter,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I did not get around to package the instrument and separate the stuff needed from what is just hanging around in the folder
<span style="font-family:"Apple Color Emoji"">😊</span><o:p></o:p></p>
<p class="MsoNormal">I will do that but I’d prefer to send the complete instrument to you personally and not prune the code because<o:p></o:p></p>
<p class="MsoNormal">of the uncertainty what is happening… and I’ll have to send a couple of comments with it!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As I mentioned before the identical instrument ran just fine with 3.5.23 and Monitor_nD has not given me any problem one<o:p></o:p></p>
<p class="MsoNormal">I learned how to use it. I noticed that event files are – reliably – updated during a run when necessary and no more than 4e9 neutrons<o:p></o:p></p>
<p class="MsoNormal">are requested but not when I ask for 5e9 in version 3.5.24… I did not pickup on this hint
<span style="font-family:"Apple Color Emoji"">😊</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ll try a bigger event buffer first though – may be it is as simple as that.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks again,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Uli<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="color:black">From:
</span></b><span style="color:black">Peter Kjær Willendrup <pkwi@dtu.dk><br>
<b>Date: </b>Thursday, May 1, 2025 at 12:01</span><span style="font-family:"Arial",sans-serif;color:black"> </span><span style="color:black">PM<br>
<b>To: </b>Wildgruber, Christoph U. <wildgrubercu@ornl.gov><br>
<b>Cc: </b>McStas <mcstas-users@mcstas.org><br>
<b>Subject: </b>[EXTERNAL] Re: [mcstas-users] Still problem running > 4e9 source neutrons...<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-line-height-alt:.75pt"><span style="font-size:1.0pt;color:white">Hi Uli, Hmm… Would be nice with access to instr code + all required nuts and bolts to reproduce? That said, I have on my list to dig deeper into a periodic issue
with event lists in Monitor_nD, likely relating to dynamic reallocation of the<o:p></o:p></span></p>
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<p class="MsoNormal">Hi Uli, <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hmm… Would be nice with access to instr code + all required nuts and bolts to reproduce?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">That said, I have on my list to dig deeper into a periodic issue with event lists in Monitor_nD, likely relating to dynamic reallocation of the event list buffer.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">With unmodified code you might be able to work around the problem by using a bigger event list buffer? Try adjusting the ‘bufsiz’ (is an option of the sim binaries as well as mcrun)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">--bufsiz=BUFSIZ Monitor_nD list/buffer-size (defaults to 10000000)<o:p></o:p></p>
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<p class="MsoNormal">(from mcrun --help)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Best,<o:p></o:p></p>
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<p class="MsoNormal">Peter<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal">On 1 May 2025, at 17.30, Wildgruber, Christoph U. via mcstas-users <mcstas-users@mcstas.org> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi everybody,<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">I was (trying to) follow(ing) Peter’s suggestion and updated the ‘xcode command line tools’ (and reinstalled xcode too)<o:p></o:p></p>
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<p class="MsoNormal">on my M2 MBP. The the same instrument runs fine with 5e8 source neutrons (I did not try yet 4e9, but I will)<o:p></o:p></p>
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<p class="MsoNormal">with 5e9 however I get the same error message(s) I got yesterday before the ‘xcode’ update (copy from mcgui-py)<o:p></o:p></p>
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<p class="MsoNormal">I am running single threaded btw…:<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">Incoherent: incCube: Vc=13.827 [Angs] sigma_abs=0.001 [barn] sigma_inc=5 [barn]</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">Monitor_nD: Crystal_15_out is a Intensity Crystal index Neutron_ID Position Position Position Velocity Velocity Velocity Time_Of_Flight Monitor (Square).</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">Monitor_nD: version $Revision$ with options=user1,n,x,y,z,vx,vy,vz,t,list all neutrons verbose</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">Monitor_nD: Collimator_in is a Intensity Crystal index Neutron_ID Position Position Position Velocity Velocity Velocity Time_Of_Flight Monitor (Square).</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">Monitor_nD: version $Revision$ with options=user1,n,x,y,z,vx,vy,vz,t,list all neutrons verbose</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">Monitor_nD: Collimator_out is a Intensity Crystal index Neutron_ID Position Position Position Velocity Velocity Velocity Time_Of_Flight Monitor (Square).</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">Monitor_nD: version $Revision$ with options=user1,n,x,y,z,vx,vy,vz,t,list all neutrons verbose</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green"> </span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">Trace ETA (single process) 1.27806 [h]</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">0 %</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">10 %</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">20 %</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">30 %</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">40 %</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">50 %</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">60 %</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">70 %</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">80 %</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">90 %</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green"> </span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green"># 3.5.24, git: [pid 95430] Signal 11 detected SIGSEGV (Mem Error)</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green"># Simulation: BMSPEC_Coll (BMSPEC_parallelBeam_3.35_2.0_xtal15.instr)</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green"># 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)</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green"># Date: Thu May 1 10:24:24 2025</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green"># Started: Thu May 1 09:18:16 2025</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green"># Last I/O Error: No such file or directory</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">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>.</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">Traceback (most recent call last):</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mcrun.py", line 612, in <module></span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">main()</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mcrun.py", line 584, in main</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">mcstas.run() # in mccode.py</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">^^^^^^^^^^^^</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mccode.py", line 341, in run</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">return self.runMPI(args, pipe, override_mpi)</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mccode.py", line 395, in runMPI</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">return Process(binpath).run(args, pipe=pipe)</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mccode.py", line 77, in run</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">raise err</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/share/mcstas/tools/Python/mcrun/mccode.py", line 73, in run</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">proc = run(command, shell=True, check=True, text=True, capture_output=pipe)</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">File "/Applications/McStas-3.5.24.app/Contents/Resources/miniconda3/lib/python3.12/subprocess.py", line 573, in run</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">raise CalledProcessError(retcode, process.args,</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:green">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>.</span><span style="font-size:9.0pt;font-family:Helvetica"><o:p></o:p></span></p>
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<p class="MsoNormal">It looks like it running just fine til the end but then throws a ‘<span style="color:green">died with <Signals.SIGQUIT: 3’ …</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="color:green"> </span><o:p></o:p></p>
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<p class="MsoNormal">Any suggestion what I could/should try?<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">If a code snippet would help I can try to provide it but the error message suggests to me it is something different…<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">Thanks folks,<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">Uli<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica">_______________________________________________<br>
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</blockquote>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:black"><br>
Peter Kjær Willendrup<br>
Forskningsingeniør, Specialkonsulent<br>
<br>
DTU Physics<o:p></o:p></span></p>
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<p class="MsoNormal"><br>
<img border="0" width="400" height="1" style="width:4.1666in;height:.0104in" id="_x0000_i1026" src="cid:b6339554-7f28-441d-9f31-5944f811397c@win.dtu.dk"><span style="font-size:9.0pt;font-family:Helvetica;color:black"><br>
<br>
<br>
Technical University of Denmark<br>
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<br>
<br>
Department of Physics<br>
Fysikvej<br>
Building 307<br>
DK-2800 Kongens Lyngby<br>
<br>
Main office at <br>
ESS DMSC<br>
Building 305<br>
DK-2800 Kongens Lyngby<br>
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Direct +45 2125 4612<br>
Mobil +45 2125 4612<br>
Fax +45 4593 2399<br>
pkwi@fysik.dtu.dk</span> <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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