ESMF Infrastructure Layer.ppt

ESMF Infrastructure Layer Talk Outline What is the infrastructure layer What is it for What it contains ESMF infrastructure in this release ESMF version 1.0 function call? examples (code!!!) (?aka API or methods) Next steps…. Infrastructure Utility Example Infrastructure Layer A standard software platform for enabling interoperability (developing couplers, ensuring performance portability). Set of reusable software for Earth science applications. Streamlined development for researchers. Infrastructure Layer Scope Talk Outline What is the infrastructure layer What is it for What it contains ESMF infrastructure in this release ESMF version 1.0 function call? examples (code!!!) (?aka API or methods) Next steps…. Infrastructure utility example Infrastructure Internal Organization ESMF Infrastructure Fields and Grids Creating an ESMF Field Fortran Array Array Attach Field Attach Array Creating an ESMF Grid Field and Grid Together Regrid Function mapping field’s array to a different physical and distributed grid. RegridCreate() – creates a Regrid structure to be used/re-used regrid = ESMF_RegridCreate(src_field, dst_field, method, [name], [rc]) Source, Dest field can be empty of field data (RegridCreate() uses grid metrics) PhysGrid, DistGrid info used for setting up regrid Resulting regrid can be used for other fields sharing same Grid Method specifies interpolation algorithm. For example, bilinear, b-spline, etc… Regrid Interface (cont) RegridRun() – performs actual regridding call ESMF_RegridRun(src_field, dst_field, regrid,[rc]) Communication and interpolation handled transparently. RegridDestroy() – frees up memory call ESMF_RegridDestroy(regrid,[rc]) Redistribution No interpolation or extrapolation Maps between distributed grids, field’s array and physical grid are the same i.e. Example: layout() created two distributed grids one decomposed in X and one decomposed in Y. Redistribution() function maps arr