On 12/10/2017 09:39 PM, Phani Motamarri wrote:
Thank you Dr WolfGang for your reply. I do not know if I was clear in my
email. I was only intending to check with you about this critical number of
elements on the base mesh only when I am trying to generate hanging node mesh
from the base mesh using p4est.
When I debug with ddt, the stack trace shows execute_coarsening_refinement
calls p8est_refine which calls p8est_refine_ext which calles p8est_is_valid
and finally it calls p8est_comm_sync_flag after it which it calls PMPI_Abort()
and my code get aborted.
This happens whenever I run more than 8procs. Here in this case, I have a base
mesh with 64 elements and I try to adaptively refine to generate hanging node
mesh using triangulation.execute_coarsening_and_refinement() after marking
some cells for refinement.
I understood what you said. But my answer is still correct: there is no
limitation, and to find out what causes the error/abort, you need to find out
whether all processors abort in the same place.
Best
W.
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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