Forum Discussion

🚨 This forum is archived and read-only. To submit a forum post, please visit our new Developer Forum. 🚨
ganzuul's avatar
ganzuul
Honored Guest
13 years ago

ASIC modules, WiGig, microwave cavities

I keep running into reoccurring hard limits regarding today's consumer-grade HPC as I ponder next-gen apps. Eventually it got me thinking, what about an architecture where the main intercom fabric was a microwave cavity? You could have ports on its faces and address both in frequency and space inside the manifold cavity.
Modules would be specialized ASICs, such as the shady ones currently minting cryptocoin, perhaps in addition to FPGAs. For style you could put an FPGA in one end for input and one in the other for output. When you load the device with a bad computation it achieves a very high voltage and possibly explodes! And the modules would probably become rugged enough to survive ninja theft...

I mean, it's perfect!

The power-performance ratio of the 7970 I bought just when they hit the web with their launch prices of somewhere over 500€ appeared to be ideal, but since then I have concluded that the entire form-factor of air-cooled computers is somehow wrong for a big resistor outputting 300 Watts of heat. It would suffice for a demo of each one of my ideas but not for much more than two in parallel. 900 Watts would not be bearable in the summer.

There isn't a single component on a PCB which is designed to be liquid cooled, much less immersed and left in water while operating. - I think HPC circuit boards should have a pressure tolerance written on the housing.
Pretty soon we will start adding 60GHz WiGig tech to consumer grade HPC. Looking at the trend of 2.4GHz I begin to imagine serious voltage differentials. How convenient if we could just submerse the entire kit in radiation-absorbent H2O and at high load we were simply heating water? No information leaks, unless you were about to run out of steam.

The central transmission fabric is an encapsulated void with antennas at known intervals. Those antennas may or may not be connected to a transmitter, receiver, or both. Each manifold could have characteristic defects to make it unique thanks to modern manufacturing accuracy and any antenna that you populated with a module could increase this defect space. You could achieve a very high bit rate at 60GHz with say eightfold symmetry in your microwave cavity. More so if each module could command more than one antenna and then use beam-forming.

I figure, it might be enough for running Luxrender at 60Hz, 4K wide. Maybe if the modules were like object-oriented programming objects, standard libraries which could be etched in silicon and plugged into the manifold. Or perhaps Luxrender is a single module and in two years you can get 8K by paying the same price.

For sensors distributed around a room wireless access to computation ought to be popular. These sensors would however almost certainly be used for security. If they transmit when something moves, an observer of the transmission can detect movements which may be private. These sensors have to be resistant to spoofing.
60GHz is severely limited by O2 in the atmosphere so the radiation should never travel very far. This is a convenient physical property of the oxygen molecule. Your neighbours might still spy on you but at least drones can't. :P

12 Replies