Mathew Yeates wrote: > Hi > > I have a line in my program that looks like > outarr[1,:] = computed_array > where outarr is a memory mapped file. This takes forever. > > I checked and copying the data using "cp" at the command line takes 1 > or 2 seconds. So the problem can't be attributed simply to disk i/o. Is > it because the elements are being written one at a time? Any ideas on > how to speed this up?
Memory-mapping is highly platform dependent. What platform are you on? What are the sizes of the arrays? Can you write up a small, self-contained script that demonstrates the issue so we can experiment and try things out on different machines? -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
