Initialization and bootstrapping¶
There are three ways to start PISM:
-ireads a previously-saved “complete” PISM model state from a NetCDF file, or
-bootstrapreads an “incomplete” NetCDF file and uses heuristics to fill in needed fields, or
pismr -eisII ...and the
pismvexecutable are used to initialize simplified-geometry experiments and verification tests from formulas in the source code, and thus no input file is required.
One of the first two choices is required when using the executable
usually starts with the
-i input.nc -bootstrap because real ice sheet observations are
never complete initial conditions. Runs with multiple stages often use the
option after the first stage.