[R-SIG-Mac] Old Dell running faster than new MacBook

[Rob Goedman]

A 2.6 MacBook Pro, 2G, just to check differences between R and R.app.
Not completely fair, R.app runs in 64 bit, R in Terminal in 32 bit.

Stiil, always interesting to check now and then.

Rob


R.app (64 bit):
=====

 > indexGenerator(0.08,0.15,30,100)
[1] Simulation 1 of 100 done.
[1] Simulation 2 of 100 done.
...
[1] Simulation 99 of 100 done.
[1] Simulation 100 of 100 done.
    user  system elapsed
   8.266   0.216   8.631

(iGen comments out the print statement.)

 > iGen(0.08,0.15,30,100)
    user  system elapsed
   8.219   0.220   8.635
 > iGen(0.08,0.15,30,100)
    user  system elapsed
   8.202   0.227   8.567

 > indexGenerator(0.08,0.15,30,1000)
[1] Simulation 1 of 1000 done.
[1] Simulation 2 of 1000 done.
...
[1] Simulation 999 of 1000 done.
[1] Simulation 1000 of 1000 done.
    user  system elapsed
  83.898   1.443  98.678
 >

(iGen again.)

 > iGen(0.08,0.15,30,1000)
    user  system elapsed
  81.026   1.306  82.828
 > iGen(0.08,0.15,30,1000)
    user  system elapsed
  80.688   1.311  82.535
 >

R in Terminal (32 bit):
===========

 > indexGenerator(0.08, 0.15, 30, 100)
[1] Simulation 1 of 100 done.
[1] Simulation 2 of 100 done.
...
[1] Simulation 99 of 100 done.
[1] Simulation 100 of 100 done.
    user  system elapsed
   9.107   0.099   9.283
 >

 > indexGenerator(0.08, 0.15, 30, 100)
[1] Simulation 1 of 100 done.
[1] Simulation 2 of 100 done.
...
[1] Simulation 999 of 1000 done.
[1] Simulation 1000 of 1000 done.
    user  system elapsed
  91.582   1.199  94.543

 > indexGenerator(0.08, 0.15, 30, 100)
[1] Simulation 1 of 1000 done.
[1] Simulation 2 of 1000 done.
...
[1] Simulation 999 of 1000 done.
[1] Simulation 1000 of 1000 done.
    user  system elapsed
  92.544   3.551 101.139
 >

I did do some other work during this last run in the Terminal.
In fact TimeMachine kicked in and I read some more email.

On Oct 25, 2008, at 11:42 AM, Simon Urbanek wrote:
>
> mini, Intel Code 1.66GHz (so much slower than yours):
>   user  system elapsed
> 15.321   0.123  15.764
>
> iMac, Intel Core 2 Duo 2.8GHz (a bit faster than yours):
>   user  system elapsed
>  8.602   0.067   8.708


On Oct 25, 2008, at 1:06 PM, Byron Ellis wrote:

> On my 2.16GHz Macbook w/ 2GB of RAM your code takes about 11.2 and 112
> seconds total time elapse respectively. Are you running from the GUI  
> or
> through Terminal?
>
> On Sat, Oct 25, 2008 at 10:23 AM, Nils Rüfenacht <nils.ruefenacht at bluewin.ch
>> wrote:
>
>>
>> Without running any other program in the background yields (on my  
>> Mac)
>>
>>> indexGenerator(0.08,0.15,30,100)
>>  user  system elapsed
>> 19.739   0.220  19.961
>>> indexGenerator(0.08,0.15,30,1000)
>>  user  system elapsed
>> 197.721   2.138 199.012