limit grid dimension for fold
limit grid dimension for fold

Ignore-this: 1eb11b82ffeb4410a3a2b7e8f898dfdf
- thread blocks now stride over the input array, as intended by the kernel

darcs-hash:20100908051223-dcabc-e462d53f3d8b1238b61590c825a8749033b66dcb.gz

wilbowma/accelerate,rrnewton/accelerate,sjfloat/accelerate,wilbowma/accelerate,robeverest/accelerate,robeverest/accelerate