gmres

Hi,

do you know if there is maybe a faster version of gmres than the one implemented in matlab?

Does this depend on the version? (I'm using 7.4 but i would have acces to newer ones)

Thanks in advance,

Cristobal.

Answer 1

[Penny Anderson]

Cristobal,

Can you say more about your expectations of the performance of gmres? How long is it taking to solve now? How large is your problem? What kind of preconditioner are you using? Is it feasible to solve via a direct method within "backslash" ( >> x = A\b; ) instead?

Penny.