[LLVMdev] darwin llvm-gfortran Polyhedron 2005 results

[Jack Howarth]

On Wed, Apr 07, 2010 at 09:54:36PM -0700, Chris Lattner wrote:
> 
> 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

Chris,
   How essential is r81455 to the llvm-gcc4.2-2.7 release? Can we regress it
out for 2.7? I've tried all of the suggestions in...

http://llvm.org/bugs/show_bug.cgi?id=6778

from Duncan for moving va_opt into darwin.c as an extern. While this
works at first glance, it destablizes the parallel make. Regressing r81455
doesn't appear to cause any problems.
                  Jack

> 
> > 
> > ================================================================================
> > 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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