Large test programs can contain thousands of patterns and compiling ASCII patterns to the binary pattern file format using the Windows Pattern Compiler can takes hours if not days. The extensive time spent on compilation is often caused by two factors. First, the single-threaded nature of the pattern compiler, where patterns are processed one at a time, resulting in the underutilization of resources on computers with multiple cores. Second, the overhead introduced by waiting for the pattern compiler to start up before compilation and close out after compilation, resulting in a significant amount of overhead time spent for each pattern. Creating a code function or script to wrap around the Pattern Compiler Command Line Interface allows for flexibility in the usage of the tool, creating opportunities for significant improvements in the tool performance. This presentation will discuss best practices for wrapping a command line tool, multithreading the pattern compiler to process multiple files simultaneously, and how best to reduce overhead between compilations.