minor change in the makefile of cuda bench
tried to bench AlexNet 12 and AlexNet 14
shave off another 60ms by careful arrange copying
reorganized code a bit
small change
updated doc and will start multi-GPU impl soon
fix leaks on namespaces for some local methods
added wnid file
add more synchronization points to prepare for model / data mix parallelism
fix build failure
add verify for fc pass. fixed CPU version training when we cached weights
Merge pull request #1 from liuliu/unstable

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