Dag Sverre Seljebotn, 13.04.2012 00:34: > On 04/13/2012 12:11 AM, Dag Sverre Seljebotn wrote: >> Travis Oliphant recently raised the issue on the NumPy list of what >> mechanisms to use to box native functions produced by his Numba so that >> SciPy functions can call it, e.g. (I'm making the numba part up): >> >> @numba # Compiles function using LLVM >> def f(x): >> return 3 * x >> >> print scipy.integrate.quad(f, 1, 2) # do many callbacks natively! >> >> Obviously, we want something standard, so that Cython functions can also >> be called in a fast way. >> >> This is very similar to CEP 523 >> (http://wiki.cython.org/enhancements/nativecall), but rather than >> Cython-to-Cython, we want something that both SciPy, NumPy, numba, >> Cython, f2py, fwrap can implement. >> >> Here's my proposal; Travis seems happy to implement something like it >> for numba and parts of SciPy: >> >> http://wiki.cython.org/enhancements/nativecall > > I'm sorry. HERE is the CEP: > > http://wiki.cython.org/enhancements/cep1000
Some general remarks: I'm all for doing something in this direction and have been hinting at it on the PyPy mailing list for a while, without reaction so far. I'll trigger them again, with a pointer to this discussion and the CEP. PyPy should be totally interested in a generic way to do fast calls into wrapped C code in general and Cython implemented functions specifically. Their JIT would then look at the function at runtime and unwrap it. There's PEP 362 which proposes a Signature object. It seems to have attracted some interest lately and Guido seems to like it also. I think we should come up with a way to add a C level interface to that, instead of designing something entirely separate. http://www.python.org/dev/peps/pep-0362/ Stefan _______________________________________________ cython-devel mailing list cython-devel@python.org http://mail.python.org/mailman/listinfo/cython-devel
