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Comment commodity HPC depends on your code (Score 5, Informative) 205

In HPC we call it "pleasantly parallel," nothing is embarrassing about it! =]

If your code:
-scales to OpenCL/CUDA easily.
-does not require high concurrent memory transfers
-is fault tolerant (ie a failed card doesn't hose a whole day/week of runs)
-can use single precision flops

Then you can use commodity hardware like the gtx series cards. I'd go with the gtx 560ti (GF114 gpu).

Make nodes with:
quad core processors (amd or intel)
whatever ram is needed (8GB minimum)
2 x gtx560ti (448) run in SLI (or the 560ti dual from EVGA)

Basically a scaled down Cray XK6 node. http://www.cray.com/Assets/PDF/products/xk/CrayXK6Brochure.pdf

It all depends on your code.

Comment Seems to track age of the language (Score 1) 185

It don't surprise me that it seems to correlate to the age of the language multiplied by how widespread the use, with "newer" languages that are widely used being the most represented.

I don't think it has anything to do with how difficult Javascript is, but more to what the programming experience is of the person using the language. I'm sure there are more would be more posts asking about QBasic than LISP if there was internet in 1994 like there is today.

Also people using C/Java/etc. can self-teach by digging through libraries themselves.

Comment Amazon AWS. (Score 4, Informative) 264

$1.60 / hour for the largest non-GPU cluster instance. This also provides you with rather fast interconnects and scalability with multiple instances.

Only £4,000 in hardware would be a waste of money. You wouldn't have all that much computing power, and it would be obsolete immediately.

Comment W7 is pretty good about it (Score 1) 456

The real problem with incorrect reporting times is when you have a very large number of 10-100kB files to transfer. Windows spends a very long time starting up the transfer of a new file, and that is where I have seen the greatest slowdown and most inaccurate time estimates.

Windows 7 performs better with smaller files, and provides a transfer rate indicator, but everyone already knows this.

What a weird thing to take out...

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