Manually nested Tables faster than builtin nesting?
- To: mathgroup at smc.vnet.net
- Subject: [mg113391] Manually nested Tables faster than builtin nesting?
- From: Sebastian Schmitt <sschmitt at physi.uni-heidelberg.de>
- Date: Wed, 27 Oct 2010 05:13:59 -0400 (EDT)
Dear all!
I find that manually nested Tables are faster (factor 2 in my example)
compared to the builtin nesting. I probably do a stupid thinko. Could
you please have a look?
In[52]:= imax = jmax = 5000;
In[53]:= (tabletable = Table[Table[i*j, {i, imax}], {j, jmax}];) //
Timing // First
Out[53]= 1.84
In[54]:= (table = Table[i*j, {i, imax}, {j, jmax}];) // Timing // First
Out[54]= 14.55
In[55]:= tabletable == table
Out[55]= True
Thanks,
Sebastian