Author: Eugene Nalimov
Date: 21:36:57 02/17/03
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Brian, I don't know what is wrong with your system, or compiler, or both, but I have *much* better results on my Itanium system using recent version of 64-bit Visual C. And I can easily improve results by double-digit number using profile-guided optimizations. Unfortunately I am not sure if I can disclose the results, as system originally was provided under NDA... One simple question: can you recompile Crafty (and Tinker if you wish), adding /GL to the compiler command line? Thanks, Eugene On February 16, 2003 at 16:50:48, Brian Richardson wrote: >I have been running some informal Itanium2 tests with Tinker and Crafty (18.15). >The results are not encouraging. I know Bob Hyatt has posted better numbers for >Itanium2, but I can’t come even close. Then again, I am no professional >compiler developer or performance engineer. Anyway, here is the data (Knps). > >Intel IA64 Itanium2 (1GHz) dual CPU system vs dual AMD 1900+ (1.6GHz) > >Crafty18.15 1 CPU 2 CPUs SMP Speedup >IA64 368 715 1.94 >AMD 615 1015 1.65 >IA64 Slower 40% 30% > >x86 binary >on IA64 170 337 1.98 >IA64 Slower 72% 67% > > >Tinker >IA64 260 >AMD 330 >IA64 Slower 21% > >x86 on IA64 103 >IA64 Slower 69% > > >Note that the 2 CPU SMP efficiency for the Itanium2 system is significantly >better than the dual AMD system, as has been reported before. > >Also, note that both the Intel and Microsoft Itanium2 compilers produced >different results, depending on debug (no optimization) vs optimization modes. >Also, I could not get Crafty to compile with the Intel compiler, and some Tinker >routines broke the Intel optimizer. Moreover, the Intel compiler produced code >about 5% or so faster than the Microsoft compiler for Tinker. I was not able to >get profiling to work, nor did I try Vtune. > >The results are more or less in line with the SPEC CPU2000int results for Crafty >(see www.spec.org), some of which are (run times in seconds): > >Hewlett-Packard Company hp server rx2600 (1000 MHz, Itanium 2) >186.crafty 128 > >Advanced Micro Devices Epox 8KHA+ Motherboard, AMD Athlon (TM) XP 1900+ (CPU >MHz: 1600) >186.crafty 106 > >Intel Corporation Intel D850EMVR motherboard (3.06 GHz, Pentium 4 processor with >HT Technology) >186.crafty 86 > >Advanced Micro Devices ASUS A7N8X (REV 1.02) Motherboard, AMD Athlon (TM) XP >2800+ (CPU MHz: 2250) >186.crafty 76.3
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