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g77 Help Wanted?
- To: gcc at gcc dot gnu dot org
- Subject: g77 Help Wanted?
- From: Antony Spyropoulos <aspyr at chemeng dot ntua dot gr>
- Date: Fri, 17 Mar 2000 15:38:57 +0200
Dear Madam/Sir
Running a LAPACK's benchmark (1000d.f) on two machines:
1. PIII 450MHz, 128MB RAM
2. PII 300MHz, 128MB RAM
under Linux (Slachware 7, Kernel 2.2.13), with egcs-1.1.2.
I obtained the following results in terms of Mflops:
CASE 1:
Machine 1 (no compiler optimization options): 20Mflops
Machine 2 (no compiler optimization options): 12Mflops
CASE 2:
Machine 1 (f77 -O ) : 23 Mflops
Machine 2 (f77 -O) : 26.6 Mflops
Is this paradox (PII is faster!! than PIII in case 2) due to the fuct
that the curent fortan compiler
does not exploits the architecture of PIII?
Thank you in advance,
Antony Spyropoulos