Ivan Voras skrev:
O. Hartmann wrote:
Ivan Voras wrote:
...
OTOH if the goal is to measure "operating system" performance, this
must also include the compiler, libraries and all. (for example, what
does Solaris default to nowadays? I think it ships with gcc but not as
default). The hold on gcc 4.3 in FreeBSD is, after all, political
(licencing).
This is very bad to read :-(
I agree. GPL 3 is a bit hard on the non-GPL systems (i.e. harder than
GPL 2).
Many of my colleaugues are involved in HPC, very little of them
(including myself) utilizing FreeBSD even due to the lack of fast
compilers. Yes, we all can use the port, that is right, but for those
not so familiar and deep inside the underlying OS, with newer, better
hardware (CPUs with some interesting hardware features like SSE3/4) a
on-track-following compiler like GCC 4.3 could make use of special
features introduced in newer hardware and even due to better
optimizations compile a faster OS. And the result, even in 3% or 5%
performance gain is appreciated if model-runs taking days or weeks!
AFAIK, gcc 4.3+ will always be available in the ports so users that need
it will always have it available (it's available there now!). It's just
that the base compiler will either stay 4.2, switch to something else
<SNIP>
Some of us are still hoping that PCC will be a viable option in the
future, especially now that development has picked up again. It has a
BSD-style license:
http://pcc.ludd.ltu.se/
There's also an ongoing fundraiser for PCC development (in order to
bring it to 1.0 release status):
http://www.bsdfund.org/projects/pcc/
--
Joel
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