Japan to Unveil Pascal GPU-Based AI Supercomputer

Re:Japan to Unveil Pascal GPU-Based AI Supercomputer by ak217 on Sunday March 12, 2017 @09:55PM (#13854642)

Internal combustion engines are 20-45% efficient. That means a 150 hp car dissipates 55 KW at peak. Assuming half load that's over 25 KW to dissipate continuously. Cars usually dissipate heat by way of a ~100 kg radiator, ram air and a couple of 20W fans. Brakes dissipate far larger amounts of heat in short bursts, and are passively cooled by ram air. For EVs, I'm not sure, but I think 100KW li-ion pack will continuously emit something between 1-5KW in heat when charging or discharging.

1KW is a small fraction of a typical car's heat budget.

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Re:Japan to Unveil Pascal GPU-Based AI Supercomputer by Baeocystin on Monday March 13, 2017 @12:44AM (#13855292)

I agree with your general point, but to sanity check your numbers: car radiators don't even weigh a tenth of that. The entire cooling system, including fluid, is in the sub-20kg range. The entire drivetrain of a common 4-banger is in the 150-160 kilo range.

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Re:Japan to Unveil Pascal GPU-Based AI Supercomputer by hinkley on Monday March 13, 2017 @02:18AM (#13855623)

Except it only takes about 20hp to keep a car at highway speed. The rest is for acceleration, hills, headwinds and looking cool.

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Re:Japan to Unveil Pascal GPU-Based AI Supercomputer by orbifold on Monday March 13, 2017 @03:39AM (#13855907)

Driving autonomously is pretty cool don't you think...

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Re:Japan to Unveil Pascal GPU-Based AI Supercomputer by hinkley on Tuesday March 14, 2017 @01:21PM (#13869504)

Well, in a world where all the cars were automated and could talk to each other (coordinated merges, for instance), you'd probably be fine with 60 hp motors. Where all the vehicles are hybrid, 30 might be enough for highways.

Hilly neighborhoods might be something else entirely.

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Re:Japan to Unveil Pascal GPU-Based AI Supercomputer by ethbro on Monday March 13, 2017 @10:52AM (#13858247)

So the first self-driving car should be a 20hp Volkswagen with a computer under the hood.

... I'd buy it!

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