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Programming

An Open Source Compiler From CUDA To X86-Multicore 71

Posted by timothy from the abstraction-gains-a-layer dept.
Gregory Diamos writes "An open source project, Ocelot, has recently released a just-in-time compiler for CUDA, allowing the same programs to be run on NVIDIA GPUs or x86 CPUs and providing an alternative to OpenCL. A description of the compiler was recently posted on the NVIDIA forums. The compiler works by translating GPU instructions to LLVM and then generating native code for any LLVM target. It has been validated against over 100 CUDA applications. All of the code is available under the New BSD license."
Image

Music By Natural Selection 164

Posted by samzenpus from the survival-of-the-grooviest dept.
maccallr writes "The DarwinTunes experiment needs you! Using an evolutionary algorithm and the ears of you the general public, we've been evolving a four bar loop that started out as pretty dismal primordial auditory soup and now after >27k ratings and 200 generations is sounding pretty good. Given that the only ingredients are sine waves, we're impressed. We got some coverage in the New Scientist CultureLab blog but now things have gone quiet and we'd really appreciate some Slashdotter idle time. We recently upped the maximum 'genome size' and we think that the music is already benefiting from the change."
Science

94 New Species Described By CA Academy of Sciences 52

Posted by samzenpus from the what's-in-a-name dept.
An anonymous reader writes "Researchers at the California Academy of Sciences traversed four continents and two oceans to uncover 94 new species in 2009, proving that while sometimes in this digital age the world can feel like a small place, much of it has yet to be explored. Among the 94 discoveries were 65 arthropods, 14 plants, 8 fishes, 5 sea slugs, one coral, and one fossil mammal. Why does it matter? As Dr. David Mindell, Dean of Science and Research Collections at the Academy, explained, 'Humans rely on healthy ecosystems, made up of organisms and their environments. Creating a comprehensive inventory of life on our planet is critical for understanding and managing resources. Yet a great many life-forms remain to be discovered and described.'"
Science

Aussie Scientists Find Coconut-Carrying Octopus 205

Posted by timothy from the concealed-carry-in-australian-waters dept.
An anonymous reader writes with this excerpt from an AP report: "Australian scientists have discovered an octopus in Indonesia that collects coconut shells for shelter — unusually sophisticated behavior that the researchers believe is the first evidence of tool use in an invertebrate animal. The scientists filmed the veined octopus, Amphioctopus marginatus, selecting halved coconut shells from the sea floor, emptying them out, carrying them under their bodies up to 65 feet (20 meters), and assembling two shells together to make a spherical hiding spot. ... 'I was gobsmacked,' said Finn, a research biologist at the museum who specializes in cephalopods. 'I mean, I've seen a lot of octopuses hiding in shells, but I've never seen one that grabs it up and jogs across the sea floor. I was trying hard not to laugh.'"

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