[LLVMdev] pb05 benchmarks for llvm/dragonegg 3.2

[Duncan Sands]

Hi Jack, thanks for these numbers.

>     With the commit from http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121203/158488.html,
> the Polyhedron 2005 benchmarks complete again on x86_64-apple-darwin12. The result are similar to what
> were seen with FSF gcc 4.6.2svn and llvm/dragonegg 3.0 (which was the last release that passed pb05)
> http://lists.cs.uiuc.edu/pipermail/llvmdev/2011-October/044091.html.
>           Jack
> ps Has an exhaustive effort been made yet to insure that llvm/dragonegg isn't still unnecessarily scalarizing
> the vector code generated by FSF gcc?

As far as I know, no effort has been made at all.

  If that issue were completely solved, llvm/dragonegg might become faster
> than vanilla FSF gcc.

Another issue is that, until recently, LLVM didn't have much in the way of
fast-math optimizations.  It should be better in 3.3.

Ciao, Duncan.

>
> FSF gcc 4.7.2 with llvm/dragonegg 3.2 branch
>
> a) de-gfortran47 -msse3 -ffast-math -funroll-loops -O3 %n.f90 -o %n
> b) de-gfortran47 -msse3 -ffast-math -funroll-loops -O3 -fplugin-arg-dragonegg-enable-gcc-optzns %n.f90 -o %n
> c) gfortran-fsf-4.7 msse3 -ffast-math -funroll-loops -O3 %n.f90 -o %n
>
> Run time (secs)
>
> Benchmark      de-gfortran47 de-gfortran47+optzns gfortran47
> ac                 12.28            8.02            8.17
> aermod             15.88           14.54           16.49
> air                 7.02            5.42            5.80
> capacita           39.97           34.93           32.53
> channel             2.08            2.10            1.83
> doduc              27.17           27.59           25.71
> fatigue             8.75            7.80            8.31
> gas_dyn            12.11            4.64            3.98
> induct             24.03           11.86           12.11
> linpk              15.49           15.47           15.46
> mdbx               11.90           11.31           11.18
> nf                 29.34           29.67           28.01
> protein            36.31           35.33           31.98
> rnflow             27.27           26.74           24.67
> test_fpu           11.31            9.13            7.91
> tfft                1.93            1.94            1.86
>
> Geom. Mean         13.27           11.02           10.64
>
> Compile time (secs)
>
> Benchmark      de-gfortran47 de-gfortran47+optzns gfortran47
> ac                  0.33            1.63            1.72
> aermod             21.20           29.47           42.25
> air                 1.13            2.66            4.38
> capacita            0.51            1.00            1.85
> channel             0.32            0.52            0.64
> doduc               1.79            3.74            5.84
> fatigue             0.91            1.29            1.93
> gas_dyn             0.65            1.32            3.34
> induct              1.73            2.81            3.93
> linpk               0.22            0.51            0.91
> mdbx                0.64            1.28            2.09
> nf                  0.39            0.79            2.07
> protein             1.11            1.95            4.30
> rnflow              1.25            2.87            6.32
> test_fpu            0.87            2.25            5.14
> tfft                0.21            0.35            0.58
>
> Executable (bytes)
>
> Benchmark      de-gfortran47 de-gfortran47+optzns gfortran47
> ac                 26768           47144           59104
> aermod           1039416         1065048         1396928
> air                61924           65948          110752
> capacita           41328           45424           77904
> channel            22720           26680           34688
> doduc             128360          140564          205304
> fatigue            69736           69800           90224
> gas_dyn            58936           67232          123664
> induct            163072          167296          179064
> linpk              18664           26976           42624
> mdbx               53580           57684           90216
> nf                 23864           36176           84056
> protein            74944           87128          131960
> rnflow             71784           92344          205576
> test_fpu           54088           74520          179448
> tfft               18552           18400           30664
>