[LLVMdev] darwin llvm-gfortran Polyhedron 2005 results

[Chris Lattner]

On Apr 7, 2010, at 8:41 PM, Jack Howarth wrote:

>  Building the current release 2.7 branch on x86_64-apple-darwin10
> with r81455 reverted, I get the following Polyhedron 2005 benchmark
> results (with no test failures)...

Very nice!  A 14% speedup on a benchmark we don't tune for isn't bad.  I imagine that there are several easy wins you could get on it if you were interested in analyzing the performance.  I don't think that anyone has done *any* llvm-gfortran perf work.

-Chris

> 
> ================================================================================
> Date & Time     :  7 Apr 2010 22:24:16
> Test Name       : llvm_gfortran_lin_p4
> Compile Command : llvm-gfortran -ffast-math -funroll-loops -msse3 -O3 %n.f90 -o %n
> Benchmarks      : ac aermod air capacita channel doduc fatigue gas_dyn induct linpk mdbx nf protein rnflow test_fpu tfft
> Maximum Times   :     2000.0
> Target Error %  :      0.100
> Minimum Repeats :    10
> Maximum Repeats :   100
> 
>   Benchmark   Compile  Executable   Ave Run  Number   Estim
>        Name    (secs)     (bytes)    (secs) Repeats   Err %
>   ---------   -------  ----------   ------- -------  ------
>          ac      0.34       10000     12.85      10  0.0067
>      aermod     20.01       10000     15.42      10  0.0076
>         air      1.52       10000      7.50      12  0.0934
>    capacita      0.58       10000     45.67      10  0.0152
>     channel      0.41       10000      2.19      10  0.0365
>       doduc      2.29       10000     29.08      10  0.0140
>     fatigue      1.02       10000      8.83      10  0.0582
>     gas_dyn      0.77       10000     13.12      21  0.0909
>      induct      2.54       10000     24.22      10  0.0096
>       linpk      0.28       10000     15.67      10  0.0343
>        mdbx      0.79       10000     12.09      10  0.0070
>          nf      0.33       10000     30.10      12  0.0751
>     protein      1.10       10000     42.02      10  0.0100
>      rnflow      1.53       10000     32.00      10  0.0214
>    test_fpu      1.28       10000     11.73      10  0.0446
>        tfft      0.24       10000      2.16      13  0.0988
> 
> Geometric Mean Execution Time =      14.07 seconds
> 
> ================================================================================
> 
> This compares to the last time I ran these for the release 2.5 branch...
> 
> ================================================================================
> Date & Time     :  2 Feb 2009 23:57:03
> Test Name       : llvm_gfortran_lin_p4
> Compile Command : llvm-gfortran -ffast-math -funroll-loops -msse3 -O3 %n.f90 -o %n
> Benchmarks      : ac aermod air capacita channel doduc fatigue gas_dyn induct linpk mdbx nf protein rnflow test_fpu tfft
> Maximum Times   :     2000.0
> Target Error %  :      0.100
> Minimum Repeats :    10
> Maximum Repeats :   100
> 
>   Benchmark   Compile  Executable   Ave Run  Number   Estim
>        Name    (secs)     (bytes)    (secs) Repeats   Err %
>   ---------   -------  ----------   ------- -------  ------
>          ac      0.28       10000     15.01      10  0.0805
>      aermod     16.03       10000     15.83      10  0.0772
>         air      1.62       10000      8.21      10  0.0472
>    capacita      0.47       10000     51.23      10  0.0261
>     channel      0.23       10000      3.32      10  0.0106
>       doduc      1.64       10000     34.17      10  0.0060
>     fatigue      0.70       10000     12.74      10  0.0572
>     gas_dyn      0.55       10000     16.07      10  0.0771
>      induct      1.75       10000     26.54      10  0.0017
>       linpk      0.22       10000     15.42      10  0.0205
>        mdbx      0.63       10000     14.13      12  0.0162
>          nf      0.26       10000     29.01      10  0.0909
>     protein      0.70       10000     44.89      10  0.0133
>      rnflow      1.09       10000     39.58      10  0.0212
>    test_fpu      0.89       10000     14.02      10  0.0132
>        tfft      0.17       10000      2.20      12  0.0149
> 
> Geometric Mean Execution Time =      16.15 seconds
> 
> ================================================================================
> 
> In general, since the 2.5 release, the code performance is better
> but the compile time is somewhat regressed.
>                      Jack
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