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C $Header: /u/gcmpack/MITgcm/verification/offline_exf_seaice/code_ad/the_model_main.F,v 1.5 2012/12/27 20:33:29 heimbach Exp $ |
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C $Name: $ |
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|
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CBOI |
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C |
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C !TITLE: MITGCM KERNEL CODE SYNOPSIS |
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C !AUTHORS: mitgcm developers ( support@mitgcm.org ) |
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C !AFFILIATION: Massachussetts Institute of Technology |
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C !DATE: |
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C !INTRODUCTION: Kernel dynamical routines |
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C This document summarises MITgcm code under the model/ subdirectory. |
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C The code under model/ ( src/ and inc/ ) contains most of |
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C the driver routines for the baseline forms of the kernel equations in the |
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C MITgcm algorithm. Numerical code for much of the baseline forms of |
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C these equations is also under the model/ directory. Other numerical code |
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C used for the kernel equations is contained in packages in the pkg/ |
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C directory tree. |
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C Code for auxiliary equations and alternate discretizations of the kernel |
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C equations and algorithm can also be found in the pkg/ directory tree. |
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C |
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C \subsection{Getting Help and Reporting Errors and Problems} |
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C If you have questions please subscribe and e-mail support@mitgcm.org. |
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C We also welcome reports of errors and inconsistencies in the code or |
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C in the accompanying documentation. Please feel free to send these |
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C to support@mitgcm.org. For further information and to review |
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C problems reported to support@mitgcm.org please visit http://mitgcm.org. |
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C |
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C \subsection{MITgcm Kernel Code Calling Sequence} |
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C \bv |
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C |
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C Invocation from WRAPPER level... |
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C |
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C | |
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C |-THE_MODEL_MAIN :: Primary driver for the MITgcm algorithm |
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C | :: Called from WRAPPER level numerical |
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C | :: code invocation routine. On entry |
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C | :: to THE_MODEL_MAIN separate thread and |
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C | :: separate processes will have been established. |
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C | :: Each thread and process will have a unique ID |
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C | :: but as yet it will not be associated with a |
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C | :: specific region in decomposed discrete space. |
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C | |
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C |-INITIALISE_FIXED :: Set fixed model arrays such as topography, |
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C | | :: grid, solver matrices etc.. |
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C | | |
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C | |-INI_PARMS :: Routine to set kernel model parameters. |
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C | | :: Kernel parameters are read from file "data" |
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C | | :: in directory in which code executes. |
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C | | |
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C | |-PACAKGES_BOOT :: Start up the optional package environment. |
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C | | :: Runtime selection of active packages. |
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C | |-PACKAGES_READPARMS :: read all packages input parameter file |
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C | | |- ${PKG}_READPARMS |
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C | | |
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C | |-INI_MODEL_IO :: Initialise Input/Ouput setting |
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C | | |
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C | |-INI_GRID :: Control grid array (vert. and hori.) initialisation. |
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C | | :: Grid arrays are held and described in GRID.h. |
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C | | |
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C | |-INI_DEPTHS :: Read (from "bathyFile") or set bathymetry/orography. |
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C | |-INI_MASKS_ETC :: Derive horizontal and vertical cell fractions and |
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C | | :: land masking for solid-fluid boundaries. |
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C | | |
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C | |-PACKAGES_INIT_FIXED :: do all packages fixed-initialisation setting |
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C | | |- ${PKG}_INIT_FIXED |
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C | | |
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C | |-CONFIG_SUMMARY :: Provide synopsis of kernel setup. Includes |
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C | | :: annotated table of kernel parameter settings. |
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C | | |
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C | |-PACKAGES_CHECK :: call each package configuration checking S/R |
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C | | |- ${PKG}_CHECK |
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C | | |
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C | |-CONFIG_CHECK :: Check config and parameter consistency. |
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C | |
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C |-CTRL_UNPACK :: Control vector support package. see pkg/ctrl |
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C | |
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C |-ADTHE_MAIN_LOOP :: Derivative evaluating form of main time stepping loop |
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C ! :: Automatically generated by TAMC/TAF. |
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C | |
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C |-THE_MAIN_LOOP :: Main timestepping loop routine. |
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C | | |
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C | |-INITIALISE_VARIA :: Set the initial conditions for time evolving |
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C | | |-INI_DYNVARS :: set common block variable to zero |
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C | | |-INI_NH_VARS :: set common block variable to zero |
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C | | | |
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C | | |-INI_FIELDS :: Control initialising model fields to non-zero |
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C | | | |-INI_VEL,_THETA,_SALT,_PSURF, ... |
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C | | | |-READ_PICKUP |
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C | | | |
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C | | |-INI_FORCING :: initialise forcing fields |
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C | | | |
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C | | |-PACKAGES_INIT_VARIABLES :: Does initialisation of time evolving |
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C | | | | ${PKG}_INIT_VARIA :: package data. |
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C | | | |
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C | | |-MONITOR :: Monitor state (see pkg/monitor) |
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C | | |-STATE_SUMMARY :: Summarise model prognostic variables. |
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C | | |-DO_THE_MODEL_IO :: Standard diagnostic I/O. |
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C | | |
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C====|>| **************************** |
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C====|>| BEGIN MAIN TIMESTEPPING LOOP |
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C====|>| **************************** |
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C | |-COST_AVERAGESFIELDS :: time-averaged Cost function terms (see pkg/cost) |
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C | | |
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C/\ | |-FORWARD_STEP :: Step forward a time-step ( AT LAST !!! ) |
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C/\ | | | |
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C/\ | | |-LOAD_FIELDS_DRIVER :: control loading of input fields from files |
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C/\ | | | |
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C/\ | | |-CPL_EXPORT_MY_DATA :: Send coupling fields to coupler |
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C/\ | | |-CPL_IMPORT_EXTERNAL_DATA :: Receive coupling fields from coupler |
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C/\ | | | |
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C/\ | | |-DO_ATMOSPHERIC_PHYS :: Atmospheric physics computation |
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C/\ | | | |
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C/\ | | |-DO_OCEANIC_PHYS :: Oceanic (& seaice) physics computation |
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C/\ | | | |-OBCS_CALC :: Open boundary. package (see pkg/obcs). |
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C/\ | | | |
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C/\ | | |-GCHEM_CALC_TENDENCY :: geochemistry driver routine (see pkg/gchem) |
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C/\ | | | |
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C/\ | | |-THERMODYNAMICS :: (synchronous time-stepping) |
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C/\ | | | theta, salt + tracer equations driver. |
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C/\ | | | |-EXTERNAL_FORCING_SURF:: Accumulates appropriately dimensioned |
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C/\ | | | | :: forcing terms. |
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C/\ | | | |-GAD_ADVECTION :: Generalised advection driver (multi-dim |
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C/\ | | | | advection case) (see pkg/gad). |
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C/\ | | | |-CALC_GT :: Calculate the temperature tendency terms |
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C/\ | | | |-TIMESTEP_TRACER :: Step tracer field forward in time |
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C/\ | | | |-CALC_GS :: Calculate the salinity tendency terms |
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C/\ | | | |-TIMESTEP_TRACER :: Step tracer field forward in time |
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C/\ | | | |-PTRACERS_INTEGRATE :: Integrate other tracer(s) (see pkg/ptracers). |
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C/\ | | | |-IMPLDIFF :: Solve vertical implicit diffusion equation. |
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C/\ | | | |-OBCS_APPLY_TS :: Open boundary package (see pkg/obcs ). |
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C/\ | | | |
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C/\ | | |-DYNAMICS :: Momentum equations driver. |
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C/\ | | | | |
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C/\ | | | |-CALC_GRAD_PHI_SURF :: Calculate the gradient of the surface |
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C/\ | | | | Potential anomaly. |
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C/\ | | | |-CALC_VISCOSITY :: Calculate net vertical viscosity |
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C/\ | | | |-CALC_PHI_HYD :: Integrate the hydrostatic relation. |
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C/\ | | | |-MOM_FLUXFORM :: Flux form mom eqn. package (pkg/mom_fluxform) |
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C/\ | | | |-MOM_VECINV :: Vector invariant form mom eqn (pkg/mom_vecinv) |
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C/\ | | | |-TIMESTEP :: Step momentum fields forward in time |
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C/\ | | | |-OBCS_APPLY_UV :: Open boundary package (see pkg/obcs). |
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C/\ | | | |-IMPLDIFF :: Solve vertical implicit diffusion equation. |
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C/\ | | | |-CALC_GW :: vert. momentum tendency terms (Non-Hydrostatic) |
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C/\ | | | |
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C/\ | | |-UPDATE_SURF_DR :: Update the surface-level thickness fraction. |
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C/\ | | |-UPDATE_R_STAR :: Update the level thickness fraction. |
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C/\ | | |-UPDATE_CG2D :: Update 2d conjugate grad. for Free-Surf. |
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C/\ | | | |
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C/\ | | |-SOLVE_FOR_PRESSURE :: Find surface pressure. |
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C/\ | | | |-CG2D :: Two-dim pre-con. conjugate-gradient. |
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C/\ | | | |-CG3D :: Three-dim pre-con. conjugate-gradient solver. |
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C/\ | | | |
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C/\ | | |-MOMENTUM_CORRECTION_STEP :: Finalise momentum stepping |
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C/\ | | | |-CALC_GRAD_PHI_SURF :: Return DDx and DDy of surface pressure |
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C/\ | | | |-CORRECTION_STEP :: Pressure correction to momentum |
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C/\ | | | |-OBCS_APPLY_UV :: Open boundary package (see pkg/obcs). |
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C/\ | | | |
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C/\ | | |-INTEGR_CONTINUITY :: Integrate continuity equation |
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C/\ | | | |
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C/\ | | |-THERMODYNAMICS :: (staggered time-stepping) |
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C/\ | | | theta, salt + tracer equations driver. |
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C/\ | | | |
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C/\ | | |-TRACERS_CORRECTION_STEP :: Finalise tracer stepping |
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C/\ | | | |
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C/\ | | |-GCHEM_FORCING_SEP :: tracer forcing for gchem pkg (if tracer |
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C/\ | | | dependent tendencies calculated separately) |
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C/\ | | | |
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C/\ | | |-DO_FIELDS_BLOCKING_EXCHANGES :: Sync up overlap regions. |
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C/\ | | | |
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C/\ | | |-MONITOR :: Monitor package (pkg/monitor). |
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C/\ | | |-DO_THE_MODEL_IO :: Standard diagnostic I/O. |
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C/\ | | | |
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C/\ | | |-DO_WRITE_PICKUP :: Write restart files. |
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C | | |
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C<===|=| ************************** |
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C<===|=| END MAIN TIMESTEPPING LOOP |
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C<===|=| ************************** |
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C | | |
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C | |-COST_AVERAGESFIELDS :: time-averaged Cost function terms (see pkg/cost) |
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C | |-COST_FINAL :: Cost function package. (see pkg/cost) |
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C | |
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C |-CTRL_PACK :: Control vector support package. see pkg/ctrl |
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C | |
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C |-GRDCHK_MAIN :: Gradient check package. see pkg/grdchk |
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C | |
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C |-TIMER_PRINTALL :: Computational timing summary |
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C | |
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C |-COMM_STATS :: Summarise inter-proc and inter-thread communication |
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C :: events. |
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C \ev |
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C |
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CEOI |
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|
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#include "PACKAGES_CONFIG.h" |
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#include "CPP_OPTIONS.h" |
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#include "AD_CONFIG.h" |
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|
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CBOP |
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C !ROUTINE: THE_MODEL_MAIN |
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|
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C !INTERFACE: |
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SUBROUTINE THE_MODEL_MAIN(myThid) |
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|
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | SUBROUTINE THE_MODEL_MAIN |
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C | o Master controlling routine for model using the MITgcm |
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C | UV parallel wrapper. |
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C *==========================================================* |
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C | THE_MODEL_MAIN is invoked by the MITgcm UV parallel |
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C | wrapper with a single integer argument "myThid". This |
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C | variable identifies the thread number of an instance of |
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C | THE_MODEL_MAIN. Each instance of THE_MODEL_MAIN works |
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C | on a particular region of the models domain and |
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C | synchronises with other instances as necessary. The |
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C | routine has to "understand" the MITgcm parallel |
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C | environment and the numerical algorithm. Editing this |
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C | routine is best done with some knowledge of both aspects. |
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C | Notes |
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C | ===== |
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C | C*P* comments indicating place holders for which code is |
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C | presently being developed. |
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C *==========================================================* |
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C \ev |
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|
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C !CALLING SEQUENCE: |
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C THE_MODEL_MAIN() |
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C | |
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C | |
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C |--INITIALISE_FIXED |
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C | o Set model configuration (fixed arrays) |
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C | Topography, hydrography, timestep, grid, etc.. |
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C | |
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C |--CTRL_UNPACK o Derivative mode. Unpack control vector. |
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C | |
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C |--ADTHE_MAIN_LOOP o Main timestepping loop for combined |
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C | prognostic and reverse mode integration. |
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C | |
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C |--THE_MAIN_LOOP o Main timestepping loop for pure prognostic |
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C | integration. |
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C | |
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C |--CTRL_PACK o Derivative mode. Unpack control vector. |
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C | |
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C |--GRDCHK_MAIN o Gradient check control routine. |
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C | |
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C |--TIMER_PRINTALL o Print out timing statistics. |
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C | |
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C |--COMM_STATS o Print out communication statistics. |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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C == Global variables === |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "DYNVARS.h" |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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# include "tamc.h" |
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#endif |
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#ifdef ALLOW_CTRL |
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# include "ctrl.h" |
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# include "optim.h" |
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#endif |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C myThid :: Thread number for this instance of the routine. |
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INTEGER myThid |
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|
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C !LOCAL VARIABLES: |
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C == Local variables == |
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C Note: Under the multi-threaded model myIter and myTime are local |
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C variables passed around as routine arguments. |
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C Although this is fiddly it saves the need to impose |
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C additional synchronisation points when they are updated. |
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C myTime :: Time counter for this thread |
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C myIter :: Iteration counter for this thread |
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INTEGER myIter |
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_RL myTime |
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LOGICAL exst |
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LOGICAL lastdiva |
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CEOP |
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c-- set default: |
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exst = .TRUE. |
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lastdiva = .TRUE. |
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|
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#ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_ENTER('THE_MODEL_MAIN',myThid) |
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#endif |
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|
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#if defined(USE_PAPI) || defined(USE_PCL_FLOPS_SFP) || defined(USE_PCL_FLOPS) || defined(USE_PCL) |
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CALL TIMER_CONTROL('','INIT','THE_MODEL_MAIN',myThid) |
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#endif |
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C-- This timer encompasses the whole code |
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CALL TIMER_START('ALL [THE_MODEL_MAIN]',myThid) |
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|
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#ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_CALL('INITIALISE_FIXED',myThid) |
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#endif |
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C-- Set model configuration (fixed arrays) |
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CALL TIMER_START('INITIALISE_FIXED [THE_MODEL_MAIN]',myThid) |
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CALL INITIALISE_FIXED( myThid ) |
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CALL TIMER_STOP ('INITIALISE_FIXED [THE_MODEL_MAIN]',myThid) |
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|
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myTime = startTime |
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myIter = nIter0 |
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|
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#if ( defined (ALLOW_ADMTLM) ) |
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c |
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STOP 'should never get here; ADMTLM_DSVD calls ADMTLM_DRIVER' |
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c |
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#elif ( defined (ALLOW_AUTODIFF)) |
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|
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# ifndef EXCLUDE_CTRL_PACK |
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inquire( file='costfinal', exist=exst ) |
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IF ( .NOT. exst ) THEN |
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IF ( (optimcycle.NE.0 .OR. .NOT.doinitxx) |
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& .AND. doMainUnpack ) THEN |
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CALL TIMER_START('CTRL_UNPACK [THE_MODEL_MAIN]',myThid) |
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CALL CTRL_UNPACK( .TRUE. , myThid ) |
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CALL TIMER_STOP ('CTRL_UNPACK [THE_MODEL_MAIN]',myThid) |
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ENDIF |
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ENDIF |
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# endif /* EXCLUDE_CTRL_PACK */ |
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|
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# ifdef ALLOW_COST |
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CALL COST_DEPENDENT_INIT ( myThid ) |
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_BARRIER |
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# endif |
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|
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# if ( defined (ALLOW_TANGENTLINEAR_RUN) ) |
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c |
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# ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_CALL('G_THE_MAIN_LOOP',myThid) |
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# endif |
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CALL TIMER_START('G_THE_MAIN_LOOP [TANGENT RUN]',myThid) |
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CALL G_THE_MAIN_LOOP ( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('G_THE_MAIN_LOOP [TANGENT RUN]',myThid) |
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c |
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# elif ( defined (ALLOW_ADJOINT_RUN) || \ |
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defined (ALLOW_ECCO_OPTIMIZATION) ) |
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c |
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# ifdef ALLOW_DIVIDED_ADJOINT |
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c-- The following assumes the TAF option '-pure' |
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inquire( file='costfinal', exist=exst ) |
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IF ( .NOT. exst) THEN |
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# ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_CALL('MDTHE_MAIN_LOOP',myThid) |
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# endif |
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CALL TIMER_START('MDTHE_MAIN_LOOP [MD RUN]', myThid) |
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CALL MDTHE_MAIN_LOOP ( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('MDTHE_MAIN_LOOP [MD RUN]', myThid) |
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CALL COST_FINAL_STORE ( myThid, lastdiva ) |
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ELSE |
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# ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_CALL('ADTHE_MAIN_LOOP',myThid) |
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# endif |
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CALL TIMER_START('ADTHE_MAIN_LOOP [ADJOINT RUN]', myThid) |
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CALL ADTHE_MAIN_LOOP ( myThid ) |
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CALL TIMER_STOP ('ADTHE_MAIN_LOOP [ADJOINT RUN]', myThid) |
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CALL COST_FINAL_RESTORE ( myThid, lastdiva ) |
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ENDIF |
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c-- |
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# else /* ALLOW_DIVIDED_ADJOINT undef */ |
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# ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_CALL('ADTHE_MAIN_LOOP',myThid) |
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# endif |
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CALL TIMER_START('ADTHE_MAIN_LOOP [ADJOINT RUN]', myThid) |
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cph# ifdef ALLOW_ECCO |
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cph CALL ADTHE_MAIN_LOOP ( myTime, myThid ) |
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cph# else |
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CALL ADTHE_MAIN_LOOP ( myThid ) |
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cph# endif |
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CALL TIMER_STOP ('ADTHE_MAIN_LOOP [ADJOINT RUN]', myThid) |
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# endif /* ALLOW_DIVIDED_ADJOINT */ |
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c |
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# else /* forward run only within AD setting */ |
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|
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# ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_CALL('THE_MAIN_LOOP',myThid) |
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# endif |
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C-- Call time stepping loop of full model |
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# ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_CALL('THE_MAIN_LOOP',myThid) |
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# endif |
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CALL TIMER_START('THE_MAIN_LOOP [THE_MODEL_MAIN]',myThid) |
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CALL THE_MAIN_LOOP( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('THE_MAIN_LOOP [THE_MODEL_MAIN]',myThid) |
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|
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# endif /* forward run only within AD setting */ |
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|
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# ifndef EXCLUDE_CTRL_PACK |
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IF ( lastdiva .AND. doMainPack ) THEN |
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CALL TIMER_START('CTRL_PACK [THE_MODEL_MAIN]',myThid) |
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CALL CTRL_PACK( .FALSE. , myThid ) |
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CALL TIMER_STOP ('CTRL_PACK [THE_MODEL_MAIN]',myThid) |
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IF ( ( optimcycle.EQ.0 .OR. (.NOT. doMainUnpack) ) |
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& .AND. myIter.EQ.nIter0 ) THEN |
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CALL TIMER_START('CTRL_PACK [THE_MODEL_MAIN]',myThid) |
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CALL CTRL_PACK( .TRUE. , myThid ) |
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CALL TIMER_STOP ('CTRL_PACK [THE_MODEL_MAIN]',myThid) |
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ENDIF |
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ENDIF |
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# endif /* EXCLUDE_CTRL_PACK */ |
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|
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# ifdef ALLOW_GRDCHK |
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IF ( useGrdchk .AND. lastdiva ) THEN |
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CALL TIMER_START('GRDCHK_MAIN [THE_MODEL_MAIN]',myThid) |
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CALL GRDCHK_MAIN( myThid ) |
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CALL TIMER_STOP ('GRDCHK_MAIN [THE_MODEL_MAIN]',myThid) |
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_BARRIER |
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ENDIF |
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# endif |
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|
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#else /* ALL AD-related undef */ |
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|
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# ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_CALL('THE_MAIN_LOOP',myThid) |
| 421 |
# endif |
| 422 |
C-- Call time stepping loop of full model |
| 423 |
CALL TIMER_START('THE_MAIN_LOOP [THE_MODEL_MAIN]',myThid) |
| 424 |
CALL THE_MAIN_LOOP( myTime, myIter, myThid ) |
| 425 |
CALL TIMER_STOP ('THE_MAIN_LOOP [THE_MODEL_MAIN]',myThid) |
| 426 |
|
| 427 |
#endif /* ALLOW_TANGENTLINEAR_RUN ALLOW_ADJOINT_RUN ALLOW_ADMTLM */ |
| 428 |
|
| 429 |
#ifdef ALLOW_MNC |
| 430 |
IF (useMNC) THEN |
| 431 |
C Close all open NetCDF files |
| 432 |
_BEGIN_MASTER( myThid ) |
| 433 |
CALL MNC_FILE_CLOSE_ALL( myThid ) |
| 434 |
_END_MASTER( myThid ) |
| 435 |
ENDIF |
| 436 |
#endif |
| 437 |
|
| 438 |
C-- This timer encompasses the whole code |
| 439 |
CALL TIMER_STOP ('ALL [THE_MODEL_MAIN]',myThid) |
| 440 |
|
| 441 |
C-- Write timer statistics |
| 442 |
IF ( myThid .EQ. 1 ) THEN |
| 443 |
CALL TIMER_PRINTALL( myThid ) |
| 444 |
CALL COMM_STATS |
| 445 |
ENDIF |
| 446 |
|
| 447 |
C-- Check threads synchronization : |
| 448 |
CALL BAR_CHECK( 9, myThid ) |
| 449 |
|
| 450 |
#ifdef ALLOW_DEBUG |
| 451 |
IF (debugMode) CALL DEBUG_LEAVE('THE_MODEL_MAIN',myThid) |
| 452 |
#endif |
| 453 |
|
| 454 |
RETURN |
| 455 |
END |
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