chameneos 6000000
gcc -O2 chameneosredux.c -lpthread 18.14u 276.52s 76.93r
gc chameneosredux 20.19u 0.01s 20.23r
+
+Aug 10 2009
+
+# new 6g with better fp registers, fast div and mod of integers
+# complete set of timings listed. significant changes marked ***
+
+fasta -n 25000000
+ # probably I/O library inefficiencies
+ gcc -O2 fasta.c 5.96u 0.00s 5.97r
+ gc fasta 10.59u 0.01s 10.61r
+ gc_B fasta 9.92u 0.02s 9.95r
+
+reverse-complement < output-of-fasta-25000000
+ # we don't know - memory cache behavior?
+ gcc -O2 reverse-complement.c 1.96u 1.56s 16.23r
+ gccgo -O2 reverse-complement.go 6.41u 0.62s 7.05r
+ gc reverse-complement 6.46u 0.70s 7.17r
+ gc_B reverse-complement 6.22u 0.72s 6.95r
+
+nbody 50000000
+ # math.Sqrt needs to be in assembly; inlining is probably the other 50%
+ gcc -O2 nbody.c 21.26u 0.01s 21.28r
+ gccgo -O2 nbody.go 116.68u 0.07s 116.80r
+ gc nbody 86.64u 0.01s 86.68r # -14%
+ gc_B nbody 85.72u 0.02s 85.77r # *** -17%
+
+binary-tree 15 # too slow to use 20
+ # memory allocation and garbage collection
+ gcc -O2 binary-tree.c -lm 0.87u 0.00s 0.87r
+ gccgo -O2 binary-tree.go 1.61u 0.47s 2.09r
+ gccgo -O2 binary-tree-freelist.go 0.00u 0.00s 0.01r
+ gc binary-tree 9.11u 0.01s 9.13r # *** -5%
+ gc binary-tree-freelist 0.47u 0.01s 0.48r
+
+fannkuch 12
+ # bounds checking is half the difference
+ # rest might be registerization
+ gcc -O2 fannkuch.c 59.92u 0.00s 59.94r
+ gccgo -O2 fannkuch.go 65.54u 0.00s 65.58r
+ gc fannkuch 123.98u 0.01s 124.04r
+ gc_B fannkuch 90.75u 0.00s 90.78r
+
+regex-dna 100000
+ # regexp code is slow on trivial regexp
+ gcc -O2 regex-dna.c -lpcre 0.91u 0.00s 0.92r
+ gc regex-dna 27.25u 0.02s 27.28r
+ gc_B regex-dna 29.51u 0.03s 29.55r
+
+spectral-norm 5500
+ # possibly inline evalA
+ gcc -O2 spectral-norm.c -lm 11.57u 0.00s 11.57r
+ gccgo -O2 spectral-norm.go 12.07u 0.01s 12.08r
+ gc spectral-norm 23.99u 0.00s 24.00r
+ gc_B spectral-norm 23.73u 0.00s 23.75r
+
+k-nucleotide 1000000
+ # string maps are slower than glib string maps
+ gcc -O2 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include k-nucleotide.c -lglib-2.0 10.63u 0.02s 10.69r
+ gccgo -O2 k-nucleotide.go 23.19u 0.91s 24.12r
+ gc k-nucleotide 16.73u 0.04s 16.78r # *** +5% (but this one seems to vary by more than that)
+ gc_B k-nucleotide 16.46u 0.04s 16.51r # *** +5%
+
+mandelbrot 16000
+ gcc -O2 mandelbrot.c 56.16u 0.00s 56.16r
+ gccgo -O2 mandelbrot.go 57.41u 0.01s 57.42r
+ gc mandelbrot 64.05u 0.02s 64.08r # *** -14%
+ gc_B mandelbrot 64.10u 0.02s 64.14r # *** -14%
+
+meteor 16000
+ # we don't know
+ gcc -O2 meteor-contest.c 0.10u 0.00s 0.10r
+ gccgo -O2 meteor-contest.go 0.12u 0.00s 0.12r
+ gc meteor-contest 0.18u 0.00s 0.20r # *** -25%
+ gc_B meteor-contest 0.17u 0.00s 0.18r # *** -24%
+
+pidigits 10000
+ # bignum is slower than gmp
+ gcc -O2 pidigits.c -lgmp 2.57u 0.00s 2.57r
+ gc pidigits 71.82u 0.04s 71.89r
+ gc_B pidigits 71.84u 0.08s 71.98r
+
+threadring 50000000
+ gcc -O2 threadring.c -lpthread 30.91u 164.33s 204.57r
+ gccgo -O2 threadring.go 87.12u 460.04s 447.61r
+ gc threadring 38.55u 0.00s 38.56r # *** +16%
+
+chameneos 6000000
+ gcc -O2 chameneosredux.c -lpthread 17.93u 323.65s 88.47r
+ gc chameneosredux 21.72u 0.00s 21.73r
+