Dear DuMuX users,
I am using a CCS model that includes hydrogen impurities and biofilm
growth and transport.
I inherit from the 2pncNIMin problem.
To be able to easily compute pressure gradients (needed for biofilm
attachment/detachment) *I switched from the CCTpfa method to the Box
method*.
My application compiles, links and executes fine (please note that until
now a succesful simulation would take about 2h of clock time on 40 cores).
*I run my simulations *on a cluster*in parallel* using open-mpi/1.5.6, a
typical job submission being :
$ submit "mpirun -n 40 /path/to/problem/file /path/to/input/file"
*At first* I got the following error message (at runtime):
*Dune reported error: Dune::InvalidStateException
[BoxFVGridGeometry:/path/to/dumux/root/dumux/dumux/discretization/box/fvgridgeometry.hh:125]:
The box discretization method only works with zero overlap for
parallel computations. Set the parameter "Grid.Overlap" in the input
file. ---> Abort!*
*Which I solved* by adding the following to my input file:
[Grid]
#other parameters
Overlap = 0
*However*, after doing so, the first time step of the simulation will
run forever and output the following error:*
*
*Assemble: r(x^k) = dS/dt + div F - q; M = grad r^MSolve: M deltax^k
= r^[[KCould not build any aggregates. Probably no connected nodes.*
So here is my question :*
Is it possible to run a simulation in parallel with the Box
discretization method ? *And if so, where should I look for a way to do it ?
Thanks for your help, and I'll be happy to provide you with any extra
information you might need.
Joan
_______________________________________________
Dumux mailing list
[email protected]
https://listserv.uni-stuttgart.de/mailman/listinfo/dumux
