Lp. Muray et al., DESIGN AND IMPLEMENTATION OF A REAL-TIME HIERARCHICAL PARALLEL POSTPROCESSOR FOR 100 KEV ELECTRON-BEAM LITHOGRAPHY, Journal of vacuum science & technology. B, Microelectronics and nanometer structures processing, measurement and phenomena, 15(6), 1997, pp. 2204-2208
A farm of off-the-shelf microprocessors is evaluated for use as a real
-time parallel postprocessing subsystem of the Lawrence Berkeley Natio
nal Laboratory datapath, including backscatter proximity correction. T
he native data format is GDSII with embedded control. Data storage is
fully hierarchical with no intermediate binary pattern data formats. B
enchmarks of a four Pentium pro(TM) farm, after optimization, demonstr
ate compatibility with exposure rates of 25 MHz for 32% area fill on a
vector scan Gaussian beam e-beam tool. Scalability of the architectur
e is discussed in detail. (C) 1997 American Vacuum Society.