Advanced Micro Devices Inc (AMD)

[HailMary]

New qsort benchmark results.

Last night I posted some results that were using mixed versions of gcc for 32-bit and 64-bit. I have redone everything with gcc 3.2.3 so the comparisons will be better. I also screwed up the % calculations. The % below are % faster or slower than the baseline. I used (baseline/time - 1)*100. In other words, a 50 second run is 100% faster than a 100 second run.

I have also added a 64-bit integer sort into the mix as well as runs on an Athlon MP 2400+ at 2.0Ghz with 3G memory. The Opteron's are 246 at 2.0Ghz with 4G memory.

 
 machine   o/s app int   opt      file  sort  total % faster 
                   size  compile? read  time  time 
 ----------------------------------------------------------------- 
 AthlonMP  32b 32b 32b   no        54s   55s  109s  -12% 
 Opteron   32b 32b 32b   no        47s   49s   96s  baseline 
 Opteron   64b 32b 32b   no        44s   49s   93s  +3% 
 Opteron   64b 64b 32b   no        36s   78s  113s  -15% 
  
 AthlonMP  32b 32b 32b   yes       53s   49s  102s  -17% 
 Opteron   32b 32b 32b   yes       46s   39s   85s  baseline 
 Opteron   64b 32b 32b   yes       44s   38s   82s  +4% 
 Opteron   64b 64b 32b   yes       36s   34s   70s  +21% 
  
 AthlonMP  32b 32b 64b   no        67s   83s  150s  -17% 
 Opteron   32b 32b 64b   no        58s   66s  124s  baseline 
 Opteron   64b 32b 64b   no        58s   66s  124s  0% 
 Opteron   64b 64b 64b   no        37s   59s   96s  +29% 
  
 AthlonMP  32b 32b 64b   yes       67s   64s  131s  -24% 
 Opteron   32b 32b 64b   yes       58s   41s   99s  baseline 
 Opteron   64b 32b 64b   yes       58s   41s   99s  0% 
 Opteron   64b 64b 64b   yes       36s   29s   65s  +52% 
 

All I have to say is WOW for the 64 bit integer sort on Opteron. I can't quite figure out why the 32 bit integer sort is actually slower than a 64 bit integer sort on an Opteron, but I ran it 3 times to make sure!