Bantam GDSII Stream Optimization becomes more effective as a design's GDSII Stream file grows
with the addition Design for Manufacture (DFM) and Resolution Enhancement (RET) features such a
"dummy" filling for CMP, Optical Proximity Correction (OPC), and Phase Shifted Mask (PSM). The
deeper into your tape-out flow you apply Bantam, the greater effect and value Bantam Optimization will
have in your tape-out flow.
For example, a Saratoga Data Systems customer ran Bantam GDSII Stream optimization on a 68GB full
chip design that had both CMP filling and optical corrections (OPC) applied to it. Bantam reduced the
GDSII Stream file to 607MB, a 99% reduction in file size. Moreover, the subsequent MDP fracture
runtime improved by 17X with the Bantam optimized file. The overall MDP throughput improved by 2X.
Another Saratoga Data Systems customer applies Bantam optimization to optically corrected layers, then
uses the XOR function of a popular MDP product to check the results against the original GDSII Stream
file. Their XOR runtime is typically improved by several hours and as much as 2X with Bantam
optimization applied to the input files.
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