Francesc Alted, 03.08.2011 14:18:
I'm trying to take advantage of the exciting new parallelizing capabilities recently introduced in forthcoming 0.15 version, but I'm having a small difficulty. When I try to compile a small demo routing (attached), I'm getting this error:$ cython -a mandel.pyx Error compiling Cython file: ------------------------------------------------------------ ... for pix in prange(num_pixels, nogil=True, schedule="dynamic"): x = pix % width y = pix // width cr = begin_r + (x * span_r / (width + 1.0)) ci = begin_i + (y * span_i / (height + 1.0)) n = MandelbrotCalculate(cr, ci, maxiter) ^ ------------------------------------------------------------ mandel.pyx:50:31: Calling gil-requiring function not allowed without gil While trying to figure out why MandelbrotCalculate does require GIL
That's because it does not declare that it does not require the GIL. Use the "nogil" annotation at the end of the function signature.
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