[Radiance-general] Re: Radiance timings on PowerMac

[Greg Ward]

Hi Mark,

Yes, my PowerMac is a dual-processor, so the system was taking 
advantage of the second processor on the piped command output used by 
oconv, apparently.  Two rpict processes would finish in the same time, 
and both processors can be used simultaneously by programs such as 
ranimate, ranimove, rpiece, rholo, and some of the scripts (like 
falsecolor).

-Greg

> From: Mark Stock <mstock@umich.edu>
> Date: Wed Jun 4, 2003  11:01:54  AM US/Pacific
> To: Greg Ward <gward@lmi.net>
> Subject: Re: Radiance timings on PowerMac
>
> Is that a dual-processor machine, Greg? The only place I've
> ever seen user times greater than wall clock times is for
> oconv on a dual-proc machine.
>
> Mark
>
> On Wed, 4 Jun 2003, Greg Ward wrote:
>
>> Hi Mark,
>>
>> I ran your test on my 1.42 GHz PowerMac running OS X 10.2.6 using
>> Radiance 3.5 compiled with gcc 3.1 -O2, and got the following results:
>>
>> oconv scene.rad
>> 26.100u 2.050s 0:23.08 121.9%   0+0k 0+2io 0pf+0w
>> rpict -t 30 -vf v1.vf -ab 1 -x 1000 -y 1000 scene.oct
>> rpict: 34274852 rays, 100.00% after 0.144u 0.000s 0.152r hours on
>> anyhere.local.
>> 512.010u 6.820s 9:06.75 94.8%   0+0k 9+4io 0pf+0w
>> pfilt -x /2 -y /2 scene.pic
>> 0.560u 0.010s 0:00.59 96.6%     0+0k 0+0io 0pf+0w
>>
>> Nice webpage!
>> -Greg