2 docs tagged with "fusion"

Boost.Fusion is a library for working with heterogeneous collections — containers whose elements

Every kernel launch has a fixed cost — driver overhead to enqueue it, and a round trip through global memory for its inputs and outputs — that has nothing to do with how much useful arithmetic the kernel does. A chain of small, bandwidth-bound elementwise kernels can spend more of its wall-clock time paying that fixed cost, repeatedly, than doing the actual computation, which is what makes fusing them into a single launch — or avoiding the separate launches altogether — a real optimization rather than a stylistic preference.