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SPEC95 performance comparison: 2.95.3 vs 3.0-20010525
- To: gcc at gcc dot gnu dot org
- Subject: SPEC95 performance comparison: 2.95.3 vs 3.0-20010525
- From: Dan Nicolaescu <dann at godzilla dot ICS dot UCI dot EDU>
- Date: Sat, 26 May 2001 15:25:02 -0700
I saw that there is some interest in comparing the performance of GCC
3.0 to previous versions, so I tried to see how it compares to
GCC-2.95.3 on the SPECINT95 benchmarks.
The results are here:
Base Peak Base Peak
Benchmarks Run Time Run Time Run Time Run Time
------------ -------- -------- -------- --------
099.go 279 283 282 276
124.m88ksim 168 144 162 142
129.compress 181 174 176 177
130.li 165 171 168 171
132.ijpeg 205 156 215 156
134.perl 122 119 124 119
147.vortex 219 218 241 239
The numbers represent the running time in seconds.
A short description of the benchmarks is at the end of this message.
(note that 126.gcc is missing, the cc1 compiled with 3.0-20010525
segfaults at runtime)
The benchmarks are compiled with 2 sets of options:
for base: -O3
for peak: -O3 -mcpu=v8 -mtune=ultrasparc
Suggestions for other options are welcome...
(I should use -mcpu=v8 in the base configuration too.
Why is the default instruction set v7? I doubt that there are many v7
machines still around...)
So for the base config li, ijpeg and vortex are worse for 3.0 in the
base config, compress and vortex are worse for the peak config.
No fancy options where used to when compiling the compilers: just
The machine: SUN Blade 100
Processor: 500MHz UltraSPARCIIe
OS: Solaris 2.8
The compilers and the benchmarks are on the local disk.
The machine is in multi-user mode.
I could also run the SPEC95 floating point benchmarks and report
those results too.
I have SPEC2000 too....
099.go Game playing; artificial intelligence Plays the game Go
124.m88ksim Simulation Simulates the Motorola 88100 processor
running Dhrystone and a memory test program.
126.gcc Programming & compilation Compiles pre-processed source
into optimized SPARC assembly code.
129.compress Compression Compresses large text files (about 16MB)
using adaptive Limpel-Ziv coding.
130.li Language interpreter Lisp interpreter.
132.ijpeg Imaging Performs jpeg image compression with various
134.perl Shell interpreter Performs text and numeric
manipulations (anagrams/prime number factoring).
147.vortex Database Builds and manipulates three interrelated