Robert Dewar wrote:
Actually for my taste, you have to get a MUCH bigger factor in compile time before you can call yourself a fast compiler (Realia COBOL by comparison compiles millions of lines a minute of code on current PC's, using just one core).
Obviously, apart from comparing a sufficiently large set of compilers on this, "speed of compilation" is mostly in the eye of the beholder.
Subjectively, as of gcc/gfortran 4.4, our (roughly 1 million lines of Fortran + 30,000 lines of C) code gets compiled (optimized and vectorized at -O3) in about 5 minutes on a quad core machine (using make -j8).
As an absolute number, this tells you nothing. But as a measure of usefulness, it means that from 4.4 onwards, it is possible to recompile our complete weather forecasting suite at *every* new run, 4 times a day.
You bet that's sometimes useful ... -- Toon Moene - e-mail: t...@moene.org - phone: +31 346 214290 Saturnushof 14, 3738 XG Maartensdijk, The Netherlands At home: http://moene.org/~toon/ Progress of GNU Fortran: http://gcc.gnu.org/gcc-4.5/changes.html#Fortran
