The Navel of Narcissus
Josh Simons' Coordinates in the Blogosphere

20090701 Wednesday July 01, 2009

An Excellent Optical Illusion

Assuming your aren't color blind, you see green and blue spirals in the above graphic. However, were you to download this image and sample it with GIMP, Photoshop or another image manipulation program, you would find that the "blue" and "green" are exactly the same color, RGB=(0,255,150.) I kid you not.

You can also try zooming your browser to verify that the two colors are the same. As you increase the zoom, you will notice the colors looking more and more similar.

For more like this, go here.

Thanks to Monty for this one.

(2009-07-01 15:00:00.0) Permalink Comments [3]

Run an HPC Cluster...On your Laptop

With one free download, you can now turn your laptop into a virtual three-node HPC cluster that can be used to develop and run HPC applications, including MPI apps. We've created a pre-configured virtual machine that includes all the components you need:

Sun Studio C, C++, and Fortran compilers with performance analysis, debugging tools, and high-performance math library; Sun HPC ClusterTools -- MPI and runtime based on Open MPI; and Sun Grid Engine -- Distributed resource management and cloud connectivity

Inside the virtual machine, we use OpenSolaris 2009.06, the latest release of OpenSolaris, to create a virtual cluster using Solaris zones technology and have pre-configured Sun Grid Engine to manage it so you don't need to. MPI is ready to go as well---we've configured everything in advance.

If you haven't tried OpenSolaris before, this will also give you a chance to play with ZFS, with DTrace, with Time Slider (like Apple's Time Machine, but without the external disk) and a host of other cool new OpenSolaris capabilities.

For full details on Sun HPC Software, Developer Edition for OpenSolaris check out the wiki.

To download the virtual image for VMware, go here. (VirtualBox image coming soon.)

If you have comments or questions, send us a note at hpcdev-discuss@opensolaris.org.


(2009-07-01 11:49:59.0) Permalink Comments [0]


 
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