Anybody tried this compiler for Linux?
http://developer.amd.com/cpu/open64/pages/default.aspx
Miguel
AMD Open64
Moderators: hgm, Rebel, chrisw
-
michiguel
- Posts: 6401
- Joined: Thu Mar 09, 2006 8:30 pm
- Location: Chicago, Illinois, USA
-
rbarreira
- Posts: 900
- Joined: Tue Apr 27, 2010 3:48 pm
Re: AMD Open64
Not yet. I'll try to install it later, if it's easy to do so.
However, I have tried gcc 4.5.0 and it finally seems gcc caught up with the Intel C Compiler, both in terms of features (now it has link-time, whole-program optimization) and performance, even on Intel CPUs.
However, I have tried gcc 4.5.0 and it finally seems gcc caught up with the Intel C Compiler, both in terms of features (now it has link-time, whole-program optimization) and performance, even on Intel CPUs.
-
rbarreira
- Posts: 900
- Joined: Tue Apr 27, 2010 3:48 pm
Re: AMD Open64
I installed it and did a benchmark with my AMD CPU. Here's my review after using it for 10 minutes:
With the normal optimization options (-O3 -march=barcelona -msse4a), the benchmark is a little (10% ?) slower than with gcc 4.4.3 (using -O3 -march=barcelona -mpopcnt -msse4a). Not bad considering I haven't tweaked any options.
Then I tried the -Ofast option which does interprocedural/interfile analysis, and the linking was going on for several minutes before I ran out of patience and interrupted it.
I've heard some reports of ipo. analysis occasionally being extremely slow on other compilers, so this is not that unusual. Maybe I'll try letting it run overnight to see if it works...
PS: Installation was very easy, I just had to unpack it and add the resulting directory to my path variable. Then the compiler is available as "opencc".
With the normal optimization options (-O3 -march=barcelona -msse4a), the benchmark is a little (10% ?) slower than with gcc 4.4.3 (using -O3 -march=barcelona -mpopcnt -msse4a). Not bad considering I haven't tweaked any options.
Then I tried the -Ofast option which does interprocedural/interfile analysis, and the linking was going on for several minutes before I ran out of patience and interrupted it.
I've heard some reports of ipo. analysis occasionally being extremely slow on other compilers, so this is not that unusual. Maybe I'll try letting it run overnight to see if it works...
PS: Installation was very easy, I just had to unpack it and add the resulting directory to my path variable. Then the compiler is available as "opencc".