GMRES Error - Coast/Estuary - Delft3D
intro story Coast / Estuary
Coast / EstuaryCoastal systems are among the most dynamic physical systems on earth and are subject to a large variety of forces. The morphodynamic changes occurring to coastlines worldwide are of great interest and importance. These changes occur as a result of the erosion of sediments, its subsequent transport as bed load or suspended load, and eventual deposition. Estuaries are partly enclosed water bodies that have an open connection to the coast. Estuaries generally have one or more branching channels, intertidal mudflats and/or salt marshes. Intertidal areas are of high ecological importance and trap sediments (sands, silts, clays and organic matter). Within the Delft3D modelling package a large variation of coastal and estuarine physical and chemical processes can be simulated. These include waves, tidal propagation, wind- or wave-induced water level setup, flow induced by salinity or temperature gradients, sand and mud transport, water quality and changing bathymetry (morphology). Delft3D can also be used operationally e.g. storm, surge and algal bloom forecasting. On this discussion page you can post questions, research discussions or just share your experience about modelling coastal and/or estuarine systems with Delft3D FM. ** PLEASE TAG YOUR POST! ** | Sub groups
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GMRES Error
I'm currently getting acquainted with debugging DELWAQ runs and I'm trying to understand where I should be looking for the error I'm seeing below:
Parallel processing with 1 processor(s)
SIMULATION STARTED
INTEGRATION ROUTINE = 16
TIME = 5D 0H 0M 0S . 0.00% Completed
ERROR in GMRES 1
Stopped with error code : 1
STOP 1
Any and all help is appreciated.
Thanks,
Zach
Arjen Markus, modified 6 Years ago.
RE: GMRES Error
Jedi Knight Posts: 223 Join Date: 1/26/11 Recent PostsThe first thing to do is rerun with a smaller timestep.
Thanks
Arjen Markus, modified 6 Years ago.
RE: GMRES Error (Answer)
Jedi Knight Posts: 223 Join Date: 1/26/11 Recent PostsGERMAN RIVILLAS, modified 3 Years ago.
RE: GMRES Error
Youngling Posts: 2 Join Date: 1/25/12 Recent PostsI'm debugging DELWAQ runs and appear the same error of Zachary. I'm trying to reduce the output time step from 1h to 30 min but the error persist. Do you have any idea to solve this compilation process?
Parallel processing with 1 processor(s)
SIMULATION STARTED
INTEGRATION ROUTINE = 16
TIME = 0D 0H 0M 0S . 0.00% Completed
ERROR in GMRES 1
Stopped with error code : 1
STOP 1
I saw this warning report in the input verification
Messages presented including .lsp file:
Number of WARNINGS : 1
Thanks for your help
Best regards
GERMAN RIVILLAS, modified 3 Years ago.
RE: GMRES Error
Youngling Posts: 2 Join Date: 1/25/12 Recent PostsCheers
Arjen Markus, modified 3 Years ago.
RE: GMRES Error
Jedi Knight Posts: 223 Join Date: 1/26/11 Recent Postsyu jia xin, modified 2 Years ago.
RE: GMRES Error
Youngling Posts: 5 Join Date: 12/1/18 Recent PostsHello, I want to ask you how you solve this error, error in GMRES, I suspect that there is a problem with the hyd file, but there is no error in my hydrodynamic calculation, and it is 0 warning 0 error when running waq1, so I would like to ask how this should be solved, thank you!
Arjen Markus, modified 2 Years ago.
RE: GMRES Error
Jedi Knight Posts: 223 Join Date: 1/26/11 Recent PostsThere is no relationship between the numerical methods used in Delft3D-FLOW/D-FLOW-FM and the methods in DELWAQ (well, with the exception of integration methods 19 and 20, but they are only applicable on regular grids). Therefore you cannot conclude anything about the fact there were no errors in the hydrodynamic calculation.
Also DELWAQ1 merely processes the input file - it does not check that the hydrodynamic database is free of problems.
That said, there must be something in the hydrodynamic database that is causing this. You may want to experiment with the constant DRY_THRESH (which controls the minimum thickness of water for a grid cell/segment to be regarded as wet) or the constants that control the iteration in GMRES - MAXITER and TOLERANCE