> The resulting speed up for nf.f90 is rather remarkable. What specific > feature of the fortran leads to a 30=>15s ?
I think it is the automatic array in the subroutine trisolve. Note that the speedup is rather 27->19s and may be darwin specific (slow malloc). Note also that -fstack-arrays prevents some optimizations on fatigue: 4.7->7s. This may be related to pr45810. Dominique
