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cpu clock error with OMP in MOM_set_diffusivity.F90 #161

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alperaltuntas opened this issue Oct 12, 2020 · 0 comments · Fixed by #173
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cpu clock error with OMP in MOM_set_diffusivity.F90 #161

alperaltuntas opened this issue Oct 12, 2020 · 0 comments · Fixed by #173
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alperaltuntas commented Oct 12, 2020 •
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When OMP threading is on, we get a cpu clock error in MOM_set_diffusivity, most likely due to race conditions. Line leading to error:

MOM6/src/parameterizations/vertical/MOM_set_diffusivity.F90

Line 437 in aa8ce21

call cpu_clock_begin(id_clock_CVMix_ddiff)

error msg:
661:FATAL from PE 553: MPP_CLOCK_BEGIN: mpp_clock_begin is called again before calling mpp_clock_end for the clock (Double diffusion via CVMix)

Note: this causes PET tests to fail.
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Remove an omp parallel do directive due to thread-unsafe cpu_clock NCAR/MOM6
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