[petsc-users] memory speed & the speed of sparse matrix computation

[Satish Balay]

alternate url:

http://www.cs.illinois.edu/~wgropp/bib/papers/1999/pcfd99/gkks.ps

satish

On Tue, 17 Jun 2014, murat keçeli wrote:

> The link gives 404 error.
> 
> On Sun, Jun 15, 2014 at 7:18 PM, Matthew Knepley <knepley at gmail.com> wrote:
> > On Sun, Jun 15, 2014 at 3:32 PM, Xiao, Jianjun (IKET) <jianjun.xiao at kit.edu>
> > wrote:
> >>
> >> Hello,
> >>
> >> In PETSc FAQ, I found such a statement below:
> >>
> >> This is because the speed of sparse matrix computations is almost totally
> >> determined by the speed of the memory, not the speed of the CPU.
> >>
> >> I am not an expert in matrix solving. Could anybody explain why the memory
> >> speed is so critical for the speed of sparse matrix computation? Is there
> >> any reference?
> >
> >
> > Yes, http://www.mcs.anl.gov/~kaushik/Papers/pcfd99_gkks.pdf
> >
> >   Matt
> >
> >>
> >> Thank you.
> >>
> >> Best regards
> >> JJ
> >
> >
> >
> >
> > --
> > What most experimenters take for granted before they begin their experiments
> > is infinitely more interesting than any results to which their experiments
> > lead.
> > -- Norbert Wiener
>