Paul Spitalny writes:
Most of my computer work involves simulations that bring the processor
to its knees (doing floating point math).

Depending on whether you have access to the simulation engine code
or not and whether you want to put in the effort or not the floating
point digital signal processing chips now routinely provide over 3
gigaflops/second if you can get your code to fit inside the constantly
increasing memory that is inside these parts.

Both Texas Instruments and Analog Devices produce such parts and
boards and development tools, and there are an assortment of companies
mounting these on boards and providing development tools. Some of
these even provide multiple processors per board, if your job is
suited to that and you decide you actually need to go fast.