Hi, I confirmed the gcc 4.2.3 performance for the Opteron: Benchmark with 1000000 strings of size 15 C qsort with C style compare: 0.630000 C qsort with Python style compare: 0.630000 NumPy newqsort: 0.360000
I also installed the Intel icc 10.1 compiler on my Opteron system but I did not use any flags: $ /opt/intel/cc/10.1.008/bin/icc sort-string-bench.c -o icc_sort $ ./icc_sort Benchmark with 1000000 strings of size 15 C qsort with C style compare: 1.030000 C qsort with Python style compare: 0.960000 NumPy newqsort: 0.530000 Just glad to be able to contribute something, Bruce On Thu, Feb 14, 2008 at 9:34 AM, Francesc Altet <[EMAIL PROTECTED]> wrote: > A Thursday 14 February 2008, escriguéreu: > > > > In any case, if anybody have access to an Opteron machine and gcc > > > 4.2.3, it would be great if he can run the benchmark and contribute > > > his feedback. > > > > Here it is with gcc 4.2.3 on an Opteron 246 (2.0 GHz): > > > > uller:~$ ./sort423_O2 # with -O2 > > > Benchmark with 1000000 strings of size 15 > > C qsort with C style compare: 0.770000 > > C qsort with Python style compare: 0.740000 > > NumPy newqsort: 0.630000 > > > > uller:~$ ./sort423_O3 # with -O3 > > > Benchmark with 1000000 strings of size 15 > > C qsort with C style compare: 0.640000 > > C qsort with Python style compare: 0.660000 > > NumPy newqsort: 0.400000 > > And here are my timings with gcc 4.1.3 and using a similar Opteron than > yours (270 @ 2.0 GHz): > > With -O2: > > Benchmark with 1000000 strings of size 15 > C qsort with C style compare: 0.750000 > C qsort with Python style compare: 0.700000 > NumPy newqsort: 0.690000 > > With -O3: > > Benchmark with 1000000 strings of size 15 > C qsort with C style compare: 0.670000 > C qsort with Python style compare: 0.620000 > NumPy newqsort: 0.380000 > > So, it seems clear that the GCC people has fixed in 4.2.3 the problem > with the optimizer introduced in 4.2.1. Very good! > > By the way, it's nice to see the wide range of platforms that this list > allows to test out :-) > > > > Cheers, > > -- > >0,0< Francesc Altet http://www.carabos.com/ > V V Cárabos Coop. V. Enjoy Data > "-" > _______________________________________________ > Numpy-discussion mailing list > Numpy-discussion@scipy.org > http://projects.scipy.org/mailman/listinfo/numpy-discussion > _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
