Re: [ublas] recommendation for submatrix assignment

Subject: Re: [ublas] recommendation for submatrix assignment
From: Umut Tabak (u.tabak_at_[hidden])
Date: 2010-08-09 08:02:15

On 08/09/2010 01:56 PM, Nasos Iliopoulos wrote:
> Umut,
> although not well advertised you may want to try to construct your 
> matrices using a generalized_vector_of_vectors and then copy it to the 
> final format (I think this is the fastest in Guntler's examples). 
that option seems to be the fastest indeed, I will investigate that 
approach soon.
> It usually works better in random assignments, but I am not sure this 
> will work for you.
>
> Your timings suggest that you do, but I would like to remind to use 
> -NDEBUG in your compilation options.
yes, I use -DNDEBUG -O3.