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Diffstat (limited to 'numpy/ma/bench.py')
| -rw-r--r-- | numpy/ma/bench.py | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/numpy/ma/bench.py b/numpy/ma/bench.py new file mode 100644 index 000000000..19fbe9461 --- /dev/null +++ b/numpy/ma/bench.py @@ -0,0 +1,165 @@ +#! python +# encoding: utf-8 + +import timeit +#import IPython.ipapi +#ip = IPython.ipapi.get() +#from IPython import ipmagic +import numpy +from numpy import ma +from numpy.ma import filled +from numpy.ma.testutils import assert_equal + + +#####--------------------------------------------------------------------------- +#---- --- Global variables --- +#####--------------------------------------------------------------------------- + +# Small arrays .................................. +xs = numpy.random.uniform(-1,1,6).reshape(2,3) +ys = numpy.random.uniform(-1,1,6).reshape(2,3) +zs = xs + 1j * ys +m1 = [[True, False, False], [False, False, True]] +m2 = [[True, False, True], [False, False, True]] +nmxs = numpy.ma.array(xs, mask=m1) +nmys = numpy.ma.array(ys, mask=m2) +nmzs = numpy.ma.array(zs, mask=m1) +# Big arrays .................................... +xl = numpy.random.uniform(-1,1,100*100).reshape(100,100) +yl = numpy.random.uniform(-1,1,100*100).reshape(100,100) +zl = xl + 1j * yl +maskx = xl > 0.8 +masky = yl < -0.8 +nmxl = numpy.ma.array(xl, mask=maskx) +nmyl = numpy.ma.array(yl, mask=masky) +nmzl = numpy.ma.array(zl, mask=maskx) + +#####--------------------------------------------------------------------------- +#---- --- Functions --- +#####--------------------------------------------------------------------------- + +def timer(s, v='', nloop=500, nrep=3): + units = ["s", "ms", "µs", "ns"] + scaling = [1, 1e3, 1e6, 1e9] + print "%s : %-50s : " % (v,s), + varnames = ["%ss,nm%ss,%sl,nm%sl" % tuple(x*4) for x in 'xyz'] + setup = 'from __main__ import numpy, ma, %s' % ','.join(varnames) + Timer = timeit.Timer(stmt=s, setup=setup) + best = min(Timer.repeat(nrep, nloop)) / nloop + if best > 0.0: + order = min(-int(numpy.floor(numpy.log10(best)) // 3), 3) + else: + order = 3 + print "%d loops, best of %d: %.*g %s per loop" % (nloop, nrep, + 3, + best * scaling[order], + units[order]) +# ip.magic('timeit -n%i %s' % (nloop,s)) + + + +def compare_functions_1v(func, nloop=500, + xs=xs, nmxs=nmxs, xl=xl, nmxl=nmxl): + funcname = func.__name__ + print "-"*50 + print "%s on small arrays" % funcname + module, data = "numpy.ma","nmxs" + timer("%(module)s.%(funcname)s(%(data)s)" % locals(), v="%11s" % module, nloop=nloop) + # + print "%s on large arrays" % funcname + module, data = "numpy.ma","nmxl" + timer("%(module)s.%(funcname)s(%(data)s)" % locals(), v="%11s" % module, nloop=nloop) + return + +def compare_methods(methodname, args, vars='x', nloop=500, test=True, + xs=xs, nmxs=nmxs, xl=xl, nmxl=nmxl): + print "-"*50 + print "%s on small arrays" % methodname + data, ver = "nm%ss" % vars, 'numpy.ma' + timer("%(data)s.%(methodname)s(%(args)s)" % locals(), v=ver, nloop=nloop) + # + print "%s on large arrays" % methodname + data, ver = "nm%sl" % vars, 'numpy.ma' + timer("%(data)s.%(methodname)s(%(args)s)" % locals(), v=ver, nloop=nloop) + return + +def compare_functions_2v(func, nloop=500, test=True, + xs=xs, nmxs=nmxs, + ys=ys, nmys=nmys, + xl=xl, nmxl=nmxl, + yl=yl, nmyl=nmyl): + funcname = func.__name__ + print "-"*50 + print "%s on small arrays" % funcname + module, data = "numpy.ma","nmxs,nmys" + timer("%(module)s.%(funcname)s(%(data)s)" % locals(), v="%11s" % module, nloop=nloop) + # + print "%s on large arrays" % funcname + module, data = "numpy.ma","nmxl,nmyl" + timer("%(module)s.%(funcname)s(%(data)s)" % locals(), v="%11s" % module, nloop=nloop) + return + + +############################################################################### + + +################################################################################ +if __name__ == '__main__': +# # Small arrays .................................. +# xs = numpy.random.uniform(-1,1,6).reshape(2,3) +# ys = numpy.random.uniform(-1,1,6).reshape(2,3) +# zs = xs + 1j * ys +# m1 = [[True, False, False], [False, False, True]] +# m2 = [[True, False, True], [False, False, True]] +# nmxs = numpy.ma.array(xs, mask=m1) +# nmys = numpy.ma.array(ys, mask=m2) +# nmzs = numpy.ma.array(zs, mask=m1) +# mmxs = maskedarray.array(xs, mask=m1) +# mmys = maskedarray.array(ys, mask=m2) +# mmzs = maskedarray.array(zs, mask=m1) +# # Big arrays .................................... +# xl = numpy.random.uniform(-1,1,100*100).reshape(100,100) +# yl = numpy.random.uniform(-1,1,100*100).reshape(100,100) +# zl = xl + 1j * yl +# maskx = xl > 0.8 +# masky = yl < -0.8 +# nmxl = numpy.ma.array(xl, mask=maskx) +# nmyl = numpy.ma.array(yl, mask=masky) +# nmzl = numpy.ma.array(zl, mask=maskx) +# mmxl = maskedarray.array(xl, mask=maskx, shrink=True) +# mmyl = maskedarray.array(yl, mask=masky, shrink=True) +# mmzl = maskedarray.array(zl, mask=maskx, shrink=True) +# + compare_functions_1v(numpy.sin) + compare_functions_1v(numpy.log) + compare_functions_1v(numpy.sqrt) + #.................................................................... + compare_functions_2v(numpy.multiply) + compare_functions_2v(numpy.divide) + compare_functions_2v(numpy.power) + #.................................................................... + compare_methods('ravel','', nloop=1000) + compare_methods('conjugate','','z', nloop=1000) + compare_methods('transpose','', nloop=1000) + compare_methods('compressed','', nloop=1000) + compare_methods('__getitem__','0', nloop=1000) + compare_methods('__getitem__','(0,0)', nloop=1000) + compare_methods('__getitem__','[0,-1]', nloop=1000) + compare_methods('__setitem__','0, 17', nloop=1000, test=False) + compare_methods('__setitem__','(0,0), 17', nloop=1000, test=False) + #.................................................................... + print "-"*50 + print "__setitem__ on small arrays" + timer('nmxs.__setitem__((-1,0),numpy.ma.masked)', 'numpy.ma ',nloop=10000) + + print "-"*50 + print "__setitem__ on large arrays" + timer('nmxl.__setitem__((-1,0),numpy.ma.masked)', 'numpy.ma ',nloop=10000) + + #.................................................................... + print "-"*50 + print "where on small arrays" + timer('numpy.ma.where(nmxs>2,nmxs,nmys)', 'numpy.ma ',nloop=1000) + print "-"*50 + print "where on large arrays" + timer('numpy.ma.where(nmxl>2,nmxl,nmyl)', 'numpy.ma ',nloop=100) |