mpi error at the time step of 50000

admin123@admin:/media/admin123/4A74F9CF442285AE/Wang YQ/example/未命名文件夹/60$ mpirun -np 6 esysparticle 111.py
Invalid MIT-MAGIC-COOKIE-1 keyCSubLatticeControler::initMPI()
CSubLatticeControler::initMPI()
CSubLatticeControler::initMPI()
CSubLatticeControler::initMPI()
CSubLatticeControler::initMPI()
slave started at local/global rank 4 / 5
slave started at local/global rank 3 / 4
slave started at local/global rank 0 / 1
slave started at local/global rank 2 / 3
slave started at local/global rank 1 / 2
......
......
......
Particle number = 96800 Step= 49000
top wall y position 0.043902837544149 top wall y force= -3599.174583186117
shear displacement= 0 bottom wall y force= 2060.2595043558654
calculated top y force 3599.1746599968887 output top y force 3599.174583186117 shear stress 0.5029988959774476
[admin:159255] *** Process received signal ***
[admin:159255] Signal: Segmentation fault (11)
[admin:159255] Signal code: Address not mapped (1)
[admin:159255] Failing at address: (nil)
[admin:159256] *** Process received signal ***
[admin:159256] Signal: Segmentation fault (11)
[admin:159256] Signal code: Address not mapped (1)
[admin:159256] Failing at address: (nil)
[admin:159252] *** Process received signal ***
[admin:159252] Signal: Segmentation fault (11)
[admin:159252] Signal code: Address not mapped (1)
[admin:159252] Failing at address: (nil)
[admin:159253] *** Process received signal ***
[admin:159253] Signal: Segmentation fault (11)
[admin:159253] Signal code: Address not mapped (1)
[admin:159253] Failing at address: (nil)
[admin:159254] *** Process received signal ***
[admin:159254] Signal: Segmentation fault (11)
[admin:159254] Signal code: Address not mapped (1)
[admin:159254] Failing at address: (nil)
[admin:159253] [ 0] [admin:159254] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x43090)[0x7fed90bdb090]
[admin:159254] *** End of error message ***
[admin:159256] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x43090)[0x7f0a07fd9090]
[admin:159256] *** End of error message ***
[admin:159255] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x43090)[0x7f5b24476090]
[admin:159255] *** End of error message ***
[admin:159252] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x43090)[0x7fcfeee05090]
[admin:159252] *** End of error message ***
/lib/x86_64-linux-gnu/libc.so.6(+0x43090)[0x7f46ae43b090]
[admin:159253] *** End of error message ***
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Primary job terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.
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mpirun noticed that process rank 4 with PID 0 on node admin exited on signal 11 (Segmentation fault).
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