Aeneas Single Node Performance


Simplicial Gravity code, run on a single node.

Mostly scalar code with many short loops and a few trig calls.


PPro 200

PII 300

Relative speedup

Absoft f77 -O

4.25 sec (60 Mflops)

2.92 sec (86 Mflops)


Gnu g77 ľO2

5.75 sec (43 Mflops)

3.80 sec (66 Mflops)


Mflop rates from Cray C90 Hardware Performance Monitor (HPM).

Absoft native f77 compiler is about 30% faster than Gnu g77 compiler.

Herbert W. Hamber 10/16/1997