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geodynamics / axisem

AxiSEM is a parallel spectral-element method to solve 3D wave propagation in a sphere with axisymmetric or spherically symmetric visco-elastic, acoustic, anisotropic structures.
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Error at end of run: floating-point exceptions are signalling IEEE_INVALID_FLAG #59

Open sun031 opened 5 years ago

sun031 commented 5 years ago

At the end of running python3 sumbit.py prem_test prem_iso 60 --ntheta 8, it gets

OUTPUT.txt

[SOLVER] Creating solver dir for horizontal force source Starting horizontal AxiSEM simulation Note: The following floating-point exceptions are signalling: IEEE_UNDERFLOW_FLAG IEEE_DENORMAL

For details, see the attachement. Thanks in advance.

sun031 commented 5 years ago

I add -ffpe-trap=zero,overflow,underflow while compiling in debug mode. Then the running gives the following errors. Hope it is useful.

 Number of wavefield dumps  :     145
 ...approximately every     :   12.46   seconds
 ...that is, every          :      87  timestep
 Define limitation of GLL points in the dumped fields:
   ibeg=           0 iend=           4
   jbeg=           0 jend=           4
   # points saved within an element:          25

::::::::: BACKGROUND MODEL & PRECOMPUTED MATRICES::::::: :::::::DONE BACKGROUND MODEL & PRECOMPUTED MATRICES:::::

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

Backtrace for this error:

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

Backtrace for this error:

0 0x7f53bd52815f in ???

0 0x7f97c546815f in ???

1 0x6f7fb9 in gauss

at /home/weijias/swj_axisem/ex01/axisem/SOLVER/source.f90:594

2 0x705816 in __source_MOD_compute_stf

at /home/weijias/swj_axisem/ex01/axisem/SOLVER/source.f90:158

1 0x6f7fb9 in gauss

at /home/weijias/swj_axisem/ex01/axisem/SOLVER/source.f90:594

2 0x705816 in __source_MOD_compute_stf

at /home/weijias/swj_axisem/ex01/axisem/SOLVER/source.f90:158

3 0x589968 in __time_evol_wave_MOD_prepare_waves

at /home/weijias/swj_axisem/ex01/axisem/SOLVER/time_evol_wave.F90:91

4 0x69f326 in axisem

at /home/weijias/swj_axisem/ex01/axisem/SOLVER/main.f90:74

5 0x69f6cb in main

at /home/weijias/swj_axisem/ex01/axisem/SOLVER/main.f90:25

3 0x589968 in __time_evol_wave_MOD_prepare_waves

at /home/weijias/swj_axisem/ex01/axisem/SOLVER/time_evol_wave.F90:91

4 0x69f326 in axisem

at /home/weijias/swj_axisem/ex01/axisem/SOLVER/main.f90:74

5 0x69f6cb in main

at /home/weijias/swj_axisem/ex01/axisem/SOLVER/main.f90:25

mpirun noticed that process rank 1 with PID 0 on node terrawulf exited on signal 8 (Floating point exception).

aringler-usgs commented 5 years ago

Did you make any progress on this? I am getting the same thing when I increase the NTHETA_SLICES 8 in inparam_mesh. I don't get it when I keep it to 1. 

Note: The following floating-point exceptions are signalling: IEEE_INVALID_FLAG IEEE_DENORMAL

This is on Ubuntu 18.04. Any chance it is a compiler version issue?