[Beowulf] Table of best compiler flags for different CPUs? (fwd)

[Steve Cousins]

Wups. Igor just corrected the bottom two entries of my table. They used 2
CPU's each.  The table should read:

CPU:         	Speed   CPUs	Time to run:	Compiler and Flags
=============	=======	====	============	====================
PIII 		866 Mhz	  2 	30:10		pgf77 -fast -Mconcur	
Athlon 2800+	2.1 Ghz   1	13:26		pgf77 -fast -Mconcur
SGI MIPS 	400 Mhz	  4	12:08		f77 -apo -O2 
Athlon 3000+	2.1 Ghz   1	11:27		pgf77 -fast -Mconcur
Athlon 2800+	2.1 Ghz   1	10:19		pgf77 -fast -Mconcur
Desktop G5 	2.0 Ghz	  1	9:15		xlf_r  *  
Xeon 		3.0 Ghz   1	9:08		pgf77 -fast -Mconcur
Desktop G5 	2.0 Ghz	  2	7:20		xlf_r  *  
Opteron 	1.6 Ghz	  1	7:15		pgf77 -fast -Mconcur
Xserve G5 	2.0 Ghz	  2	7:11		xlf_r  *  
SGI MIPS 	400 Mhz	  8 	6:55		f77 -apo -O2 
Opteron 	2.2 Ghz	  1	6:10		pgf77 -fast -Mconcur
Opteron		1.6 Ghz	  2	5:37		pgf77 -fast -Mconcur
Opteron 	2.6 Ghz	  1	5:32		pgf77 -fast -Mconcur
Xeon 		3.0 Ghz   2	5:29		pgf77 -fast -Mconcur
Opteron 	2.6 Ghz	  2	3:12		pgf77 -fast -Mconcur

* flags for xlf_r:  -O5 -qstrict -qarch=g5 -qtune=g5 -qsmp -qunroll=yes

Sorry about that.

Steve
______________________________________________________________________
 Steve Cousins, Ocean Modeling Group    Email: cousins at umit.maine.edu
 Marine Sciences, 208 Libby Hall        http://rocky.umeoce.maine.edu
 Univ. of Maine, Orono, ME 04469        Phone: (207) 581-4302