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

[murat keçeli]

Thank you Satish.

Murat

On Tue, Jun 17, 2014 at 3:31 PM, Satish Balay <balay at mcs.anl.gov> wrote:
> 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
>>