Is there a way to speed up C++ compilation times in Solaris Sun Studio 12?

Question

Since I am compiling my C++ code on a very server box (32 or 64 cores in total), is there a way of tweaking compiler options to speed up the compilation times? E.g. to tell compiler to compile independent .cpp files using multiple threads.

score 4 · Answer 1 · answered Jul 09 '10 at 01:20

This depends on what toolchain you're using.

If you're using GNU Make, then add -j 32 to your make invocation to tell Make to start 32 jobs (for example) in parallel. Just make sure that you're not exhausting RAM and thrashing your swap file as a result.

alanc · Accepted Answer · 2011-01-17T08:42:49.807

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Sun Studio includes parallel build support in the included dmake version of make. See the dmake manual for details.

edited Jan 17 '11 at 08:42

answered Jul 09 '10 at 02:59

alanc

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dmake -j 64 has reduced a compilation time from over two minutes to under 4 seconds... fantastic. – Steve Jul 09 '10 at 03:21

score 3 · Answer 3 · answered Jul 09 '10 at 01:37

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Use something like Boost JAM which does this sort of multithreading for you - and from my experience much more efficiently than multi-threaded make.

answered Jul 09 '10 at 01:37

Michael Dorgan

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score 0 · Answer 4 · answered Mar 24 '11 at 22:14

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Sun's C++ compiler also has an -xjobs option that makes the compiler fork multiple threads internally. For this to be efficient you would probably have to pass all .cc files to a single invocation of CC.

answered Mar 24 '11 at 22:14

Asgeir S. Nilsen

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Is there a way to speed up C++ compilation times in Solaris Sun Studio 12?

4 Answers4