Re: gfortran, g95, and dual-core

Charles Russell wrote:
Can gfortran or g95 gain anything from dual- or multi-core processors in
either speed of compilation or speed of execution? Does anything
besides clock speeed matter much?
gfortran, since 4.2, supports OpenMP parallel compilation (but
apparently not for mingw). make -j can give a big jump in build
performance, worth doing even if you are a Windows fanatic.
Not sure what you have in mind when you say "anything." Recent linux
distros do an improved job of default scheduling on multi-core, often
relieving you from fiddling with taskset and the like. Windows fanatics
rely on low level affinity calls, not what I like to do with Fortran.
Quad cores with the lowest available buss speeds saturate quickly on
memory operations with parallel programming. The buss clock speed is
more important then than the CPU clock speed.
.

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