DOLFIN User Manual - FEniCS Project

DOLFIN User ManualHoffman, Jansson, Logg, Wellswhere destination is one of ‘‘plain text’’ (standard output), ‘‘curses’’(curses interface) or ‘silent’’ (no messages printed).When messages are directed to the DOLFIN curses interface, a text-modegraphical and interactive user-interface is started in the current terminalwindow. To see a list of options, press ’h’ for help. The curses-interface isupdated periodically but the function dolfin update() can be used to forcea refresh of the display.It is possible to switch the DOLFIN log system on or off using the functiondolfin log() available in the dolfin namespace. This function accepts asargument a bool, specifying whether or not messages should be directedto the current output destination. This function can be useful to suppressexcessive logging, for example when calling a function that generates logmessages multiple times:GMRES gmres;while ( ... ){...dolfin_log(false);gmres.solve(A, x, b);dolfin_log(true);...}71