HotSpot 4.1 Changes ------------------- This release of HotSpot incorporates the following improvements: 1) The steady-state solver of the grid model has been upgraded from a Gauss-Seidel solver to a multigrid solver. This results in typical steady-state computation speedups > 20x. In order to facilitate the multigrid implementation, now the grid dimensions are required to be a power of two. Hence, the default grid size has been modified from 50x50 to 64x64. 2) The simulator template (sim-template.c) that illustrates the use of HotSpot in a typical cycle-accurate simulator has been upgraded to include grid model usage. Earlier it only demonstrated the use of the block model (sim-template_block.c) 3) The 'Makefile' has been upgraded to wrap HotSpot into a library (libhotspot.a) for easier integration with existing simulators. 4) Bugfixes etc.: a) A bug in 'hotspot.c' lead to erroneous power averaging in modeling 3-D chips while using the grid model. This has been fixed in this release. b) A bug in the floorplan plotting script 'tofig.pl' caused temporary files not to be deleted. It has been fixed now. c) Other minor changes like fixing typos etc.
