Anyone who is doing serious work with GPUs already knows the performance hit you cop when shuffling data to and from the card. If your solution relies on movin

Anyone who is doing serious work with GPUs already knows the performance hit you cop when shuffling data to and from the card. If your solution relies on moving data back and forth from host memory to device memory, you probably won't get the speed boosts you were hoping for. I can create a solution where the CPU beats the pants off the GPU, and conversely the GPU absolutely smashes the CPU, but for my actual real problems (Data copied to the card once, many iterations, multiple calculations per iteration, results copied back to host), the GPU gives one hell of a boost.