1996, my colleagues trying to port Chorus microkernel on Cray supercomputer. System crashes every ~5 days with no apparent reason. After weeks of investigation someone notices one of the network cables slightly longer than others ... after ~5 days and speed of light the Cray would miss a clock tick and crashes. Replaced network cable and it works fine!

Don't mess with supercomputers ...

Why do so many people waste their time and their computers turning coal into heat? It really pisses me off.

Often I meet smart guys who are fairly decent coders and after what starts as an interesting conversation is instantly destroyed by cryptocurrency.

It is *exactly* like enjoying a discussion of the intriguing nuances of quantum chemistry only to have the guy say, "thats all cool, but how do you make meth?"

argh.

You want to use your decked out rig to make money? Fine. But please help us solve important problems instead of literally wasting electricity. Just google search "supercomputer physics" and you will find a thousand current problems requiring extremely fast computers for number crunching. All of them can make you more money than crypto and all of them help society at the same time.

We burn coal to make most of the electricity on this planet. Most coal stations burn around 20,000 tons of coal per day. The world burns about 250 tons of coal every *second*. This is converted into carbon dioxide. (coal = carbon, add two oxygens when you burn it, producing three times as much mass in CO2, which then goes out the smoke stack)

The big picture is this: currently we are forced to burn coal to make the world work. Turning off the boilers would result in an almost instant apocalyptic collapse of society. BUT, we don't need to burn it merely to produce waste heat in your video card array.

Please use your superpowers for good.

<end rant>

Ok so the real question is, if the Floating Points have some limitation in accuracy, how do Supercomputers Handle that?