[Numpy-discussion] lazy loading ndarray? (not from file, but from user function)

uires removing mprotect (see http://stackoverflow.com/questions/2663456/write-a-signal-handler-to-catch-sigsegv) and it's impossible to know when to lock the region by mprotect again. Thanks, -Kibeom Kim ___ NumPy-Discussion mailing list NumPy-

[Numpy-discussion] a newbie parallelization question

mexpr? Thanks. -Kibeom Kim ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion

Re: [Numpy-discussion] np.linalg.norm terrible behavior

I wonder why numpy.norm doesn't call blas norm function by default. is there any good reason? or it's just not coded? -Kibeom Kim On Sun, Mar 6, 2011 at 12:13 PM, Till Stensitzki wrote: > > > > > Moreover, np.linalg.norm is slow compare to blas. > > &g

Re: [Numpy-discussion] np.linalg.norm terrible behavior

for the sum function part, It's not a good way to fix but... if you want more accuracy x=(np.array([1]*1 + [1e4], dtype=np.float32)) np.sum(x*x) 1.0001e+08 You can sort x from small numbers to bigger numbers before you call sum. -Kibeom Kim On Sat, Mar 5, 2011 at 6:27 PM, Xavier