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Re: Compilation: Avoiding inlining

  • To: mathgroup at smc.vnet.net
  • Subject: [mg121563] Re: Compilation: Avoiding inlining
  • From: David Bailey <dave at removedbailey.co.uk>
  • Date: Tue, 20 Sep 2011 06:08:14 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201109171027.GAA26060@smc.vnet.net> <j57879$jbs$1@smc.vnet.net>

On 19/09/2011 12:14, Oliver Ruebenkoenig wrote:
> On Sat, 17 Sep 2011, DmitryG wrote:
>
>> Hi Oliver,
>>
>> thank you for your response! I am interested now in the systems of
>> equations that are non-vectorizable.


I explored your code a bit, and it would seem that the function cRHS is 
called 2000 times. I wondered if most of the time was being spent in the 
function rather than the DE solving code itself, and it would seem that 
this is probably the case. I tried:

m00;While[m>0,cRHS[0.1,x0];m--;]//AbsoluteTiming

This gave a timing that was little less than the whole computation.

(I actually scaled things up a bit, because I prefer to do timing 
experiments which are scaled to last about 20 secs to minimise jitter 
from other sources.)

David Bailey
http://www.dbaileyconsultancy.co.uk




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