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Re: benchmarking.


Thanks Dominque,
interesting, if somewhat depressing (most of my machines are PPC).

could I have a copy of ".par" and pbharness.f90/pbvalid.f90 that you've used?

Iain

On 15 Jun 2008, at 14:57, Dominique Dhumieres wrote:

On a G5 1.8Ghz I get:

====================================================================== ==========
Date & Time : 19 May 2008 11:53:13
Test Name : pbharness
Compile Command : gfc %n.f90 -m64 -O3 -ffast-math -funroll-loops - ftree-loop-linear -fomit-frame-pointer -finline-limit=600 --param min-vect-loop-bound=2 -o %n
Benchmarks : ac aermod air capacita channel doduc fatigue gas_dyn induct linpk mdbx nf protein rnflow test_fpu tfft
Maximum Times : 300.0
Target Error % : 0.200
Minimum Repeats : 2
Maximum Repeats : 5


   Benchmark   Compile  Executable   Ave Run  Number   Estim
        Name    (secs)     (bytes)    (secs) Repeats   Err %
   ---------   -------  ----------   ------- -------  ------
          ac      9.91       34112    116.23       2  0.0030
      aermod    265.08     1257488     91.16       4  0.2099
         air     17.70       56576     41.27       5  0.8290
    capacita      8.19       60200    185.99       2  0.2296
     channel      5.89       30184     15.56       5  0.2732
       doduc     38.49      134240     69.69       2  0.0689
     fatigue     12.84       60040     21.46       3  0.1918
     gas_dyn     17.03      679696     55.47       2  0.1695
      induct     30.80      123592     66.08       2  0.0212
       linpk      2.24       25832     34.05       4  0.1839
        mdbx      8.94       56440     33.10       2  0.1541
          nf     21.63       58728     56.96       2  0.1220
     protein     24.75       85216     84.38       2  0.0646
      rnflow     30.08      146512     84.22       4  0.1690
    test_fpu     16.79       92464     35.70       2  0.1499
        tfft      2.82       26144     20.81       3  0.1552

Geometric Mean Execution Time = 51.37 seconds

====================================================================== ==========
Polyhedron Benchmark Validator
Copyright (C) Polyhedron Software Ltd - 2004 - All rights reserved


Dominique

PS Note the very bad result for ac.f90, otherwise the timings are on
average three times slower than on a Core2Duo 2.16Ghz


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