In our previous episode, Henry Vermaak said: > >> PS: > >> Adding any more (if possible) parallel compilation support would be > >> awesome too. This already saves me over 1 minute in compile time on my > >> quad core. Yes, I hate it if CPU's just sit idle. > > > > IIRC add FPMAKEOPT='-T 3' (3= number of paralel threads) > > This makes a big difference for me: > > Without FPCMAKEOPT: 1m48.056s > With FPCMAKEOPT="-T 9": 1m13.833s > > Unfortunately, cycling the compiler is taking really long and -j 9 isn't > helping much (or at all).
fpmake only handles packages/. fpmake (or make -j the way FPC used it in the past) can't really speed up runs that are a single compiler invocation (like the compiler), unless it can run two such runs in paralel. In packages this is possible, in the compiler cycle compiler depends on RTL, and the "next" rtl depends on the "previous" compiler, so nothing can be done there. To exploit paralellism in single compiler invocations, threading should be brought into the compiler, but that is an huge and uncertain job. _______________________________________________ fpc-devel maillist - [email protected] http://lists.freepascal.org/mailman/listinfo/fpc-devel
