Re: vectorization

*To*: mathgroup at smc.vnet.net*Subject*: [mg61460] Re: vectorization*From*: Janusz Kawczak <jkawczak at uncc.edu>*Date*: Wed, 19 Oct 2005 02:17:20 -0400 (EDT)*References*: <dipr0s$he5$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Tim, below is the Timing for my system using all the functions from the web indicated in your e-mail. It is not giving a whooping 12 times or higher factor but mere 2 times or less. I also would like to see an example to support of 17 times faster for Cosh computations. Best, Janusz. In[1]:= \!\($Version\[IndentingNewLine] \(z := Table[Random[], {i, 1, 10\^7}];\)\[IndentingNewLine] Timing[Cosh[z]; ]\[IndentingNewLine] Timing[ArcSinh[z]; ]\[IndentingNewLine] Timing[Sinh[z]; ]\[IndentingNewLine] Timing[Tanh[z]; ]\[IndentingNewLine] Timing[Exp[z]; ]\[IndentingNewLine] Timing[Tan[z]; ]\[IndentingNewLine] Timing[ArcTan[z]; ]\[IndentingNewLine] Timing[Sin[z]; ]\[IndentingNewLine] Timing[Cos[z]; ]\) Out[1]= 5.2 for Microsoft Windows (June 20, 2005) Out[3]= {2.031 Second, Null} Out[4]= {2.234 Second, Null} Out[5]= {2.157 Second, Null} Out[6]= {2.062 Second, Null} Out[7]= {1.922 Second, Null} Out[8]= {2.063 Second, Null} Out[9]= {2.062 Second, Null} Out[10]= {1.984 Second, Null} Out[11]= {1.954 Second, Null} In[1]:= \!\($Version\[IndentingNewLine] \(z := Table[Random[], {i, 1, 10\^7}];\)\[IndentingNewLine] Timing[\(Cosh[z];\)]\[IndentingNewLine] Timing[\(ArcSinh[z];\)]\[IndentingNewLine] Timing[\(Sinh[z];\)]\[IndentingNewLine] Timing[\(Tanh[z];\)]\[IndentingNewLine] Timing[\(Exp[z];\)]\[IndentingNewLine] Timing[\(Tan[z];\)]\[IndentingNewLine] Timing[\(ArcTan[z];\)]\[IndentingNewLine] Timing[\(Sin[z];\)]\[IndentingNewLine] Timing[\(Cos[z];\)]\) Out[1]= 5.1 for Microsoft Windows (October 25, 2004) Out[3]= {4.516 Second, Null} Out[4]= {3.89 Second, Null} Out[5]= {4.531 Second, Null} Out[6]= {4.422 Second, Null} Out[7]= {3.453 Second, Null} Out[8]= {3.219 Second, Null} Out[9]= {2.516 Second, Null} Out[10]= {2.625 Second, Null} Out[11]= {2.562 Second, Null} tim wrote: > Dear mathgroup! > I have a question on a new feature of mathematica 5.2. Question > about Vectorization: > http://www.wolfram.com/products/mathematica/newin52/vectorization.html > Can you show me concrete example code that demonstrates comparation of > rates between of 5.1 and 5.2 versions? > I test different functions Exp, Sin, e.t.s. but I have the same rate of > calculation for both Matematica 5.1 and 5.2. I use an intel Pentium 4 > computer. Thank you! > Tim, > Moscow, MEPhI, Plasma physics department >