gfor

Parallel loop iterations: gfor. More...

Modules
	local
	Create local copy of variable for iteration.
	gfor
	Do not use this function directly; see GFOR: Parallel For-Loops.

Detailed Description

Parallel loop iterations: gfor.

See tutorial for usage and examples.

Run an FFT on every 2D slice of a volume sequentially with a for-loop or in parallel (faster) with a gfor-loop:

for (int i = 0; i < N; ++i)
    A(span,span,i) = fft2(A(span,span,i)); // runs each FFT in sequence

gfor (array i, N)
    A(span,span,i) = fft2(A(span,span,i)); // runs N FFTs in parallel

Use local() to declare a variable or expression local for each iteration (see more).

See Also

local()

Tutorial on GFOR