gomp slowness

[tim prince]

skaller wrote:
> On Thu, 2007-10-18 at 06:00 -0700, Tim Prince wrote:
>   
>> skaller wrote:
>>     
>
>   
>> I don't know of any OpenMP compiler which would correct the nesting of 
>> parallel loops in your LU.  I have assumed that OpenMP doesn't allow 
>> such optimization; you have to get it right yourself.
>>     
>
> Can you explain? This code was taken from a *tutorial* on OpenMP:
>
> http://kallipolis.com/openmp/2.html
>
>   
Did they show your version somewhere as an example of what not to do?  
In the page you referenced, they appear to have the correct loop nesting.