Community
cancel
Showing results for 
Search instead for 
Did you mean: 
simon932
Beginner
27 Views

Size of tmp array for fgmres solver

Greetings,

From the Intel MKL reference manual for version 11.3, in the FGMRES interface description on p.1602, it is said:

tmp double array of size ((2*ipar[14] + 1)*n + ipar[14]*(ipar[14] + 9)/2 + 1)) used to supply the double precision temporary space for the RCI FGMRES computations

then on top of p.1603, there is a note saying

You can define this array in the code as double tmp[(2*ipar[14] + 1)*n + ipar[14]*(ipar[14] + 9)/2 + 1)] if you run only non-preconditioned FGMRES iterations.

I was hoping to save a bit of memory space as I'm using the non-preconditioned version of fgmres, however in both cases the specified size for the tmp array seems to be the same, is this a mistake?

Thank you,

Simon

0 Kudos
0 Replies