[pama]

Having write access to storage or spawning persistent daemons is an extra requirement and that is often not available in practice when evaluating contest code :-)

This is a fun project for learning CUDA and I enjoyed reading about it——I just wanted to point out that the performance tuning in this case is really on the parsing, hashing, memory transfers, and IO. Taking IO out of the picture using specialized hardware or Linux kernel caching still leaves an interesting problem to solve and the focus should be on minimizing the memory transfers, parsing, and hashing.