HP MLIB User's Guide Vol. 2 7th Ed.

642 HP MLIB User’s Guide

Optimizing

• Another MLIB subprogram used by your program also calls that

subprogram

PA-RISC and Itanium processors

Also note that all the workarounds listed for Itanium are more generic and can

also be used for PA-RISC. Therefore, if you are coding your own version of a

MLIB routine called "mlib_routine" on PA-RISC or Itanium, a Fortran version

might be implemented as:

!$HP$ ALIAS mlib_routine='mlib_routine'

!$HP$ ALIAS mlib_routine_='mlib_routine_'

SUBROUTINE mlib_routine(...)

ENTRY mlib_routine_(...)

...

And a C version might be:

#undef mlib_routine

#undif mlib_routine_

void mlib_routine (...){

...

}

void mlib_routine_(...){

mlib_routine(...);

}

Optimizing

LAPACK has been optimized by using a highly efﬁcient implementation of the

Basic Linear Algebra Subprograms (BLAS), levels 1, 2 and 3, as well as a

subset of the BLAS Standard. In addition, certain algorithmic improvements

have been made, and several tunable parameters have been adjusted for good

execution performance.