LLVM 3.0 was released last week as a major update to this increasingly popular open-source compiler infrastructure. With the release of LLVM 3.0 proper also came major updates to the Clang C/C++ compiler front-end and the DragonEgg GCC plug-in. In this article is a look at DragonEgg for LLVM 3.0 that plugs into GCC to replace its optimizers and code generators with those from LLVM.
5 December 2011 - 11 Comments
The GNOME 2011 User Survey is about to end (the survey period was extended as I was out of the office the past two weeks), but here's the latest batch of one-thousand responses about the GNOME desktop. The survey responses in full from the other questions will be published soon.
4 December 2011 - 27 Comments
To see how the GCC 4.7 release is shaping up, for your viewing pleasure today are benchmarks of GCC 4.2 through a recent GCC 4.7 development snapshot. GCC 4.7 will be released next March/April with many significant changes, so here's some numbers to find out if you can expect to see any broad performance improvements. Making things more interesting, the benchmarks are being done from an AMD FX-8150 to allow you to see how the performance of this latest-generation AMD processor architecture is affected going back by GNU Compiler Collection releases long before this open-source compiler had any optimizations in place.
2 December 2011 - 24 Comments
Among many other enhancements and alterations, the Linux 3.2 kernel, the Btrfs file-system has some "pretty beefy" changes. Btrfs in Linux 3.2 merges in some long-standing Btrfs branches with new capabilities.
30 November 2011 - 12 Comments
The GNOME 2011 User Survey is still going on, so be sure to participate, but here is part four of the free-style responses.
27 November 2011 - 5 Comments
The Open64 5.0 compiler was released earlier this month with many changes, among the prominently noted items were greater optimizations for AMD's Bulldozer CPUs. In this article is a first-look at the Open64 5.0 compiler performance compared to its earlier release, as tested on an AMD FX-8150 eight-core "Bulldozer" processor.
25 November 2011 - 38 Comments
If you happen to be running a Linux system with Xen support enabled, beware there may be odd behavior with the Linux kernel's power management -- it can easily move in either direction.
21 November 2011 - 7 Comments
The GNOME 2011 User Survey is still going on, so be sure to participate. For those wanting to know what other Linux desktop users are saying about the GNOME3 desktop environment, here's one thousand more comments.
19 November 2011 - 76 Comments
It is time for another round of compiler benchmarks on AMD's latest FX-8150 Bulldozer processor. In this article is comparing the GCC 4.6.1, GCC 4.7 development, Open64 4.2.4, and AMD Open64 184.108.40.206 compilers in their stock configuration, when the binaries are built again but with the march/mtune flags set to "bdver1", and a third when being built with the "bdver1" architecture and tuning flags along with "-Ofast" for the highest-level of compiler optimizations.
15 November 2011 - 8 Comments
At long last, it looks like there is an adequate solution to the Active State Power Management (ASPM) problem in the Linux kernel , a.k.a. the well-known and wide-spread power regression in the Linux 2.6.38 kernel, which has been causing many laptops to go through significantly more power than they should. This is not another workaround, but rather a behavioral change in the kernel to better decide when the PCI Express ASPM support should be toggled.
11 November 2011 - 40 Comments
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