5 ms·
It looks impressive, but it would help to be able to tell the hype from reality: "Sensors flood the device with terabytes of data every second" ... somehow I d
by aquark 12y ago
It looks impressive, but it would help to be able to tell the hype from reality:
"Sensors flood the device with terabytes of data every second" ... somehow I doubt the aggregate bandwidth of the device is > 1TB\s
Makes it harder to know how much of the rest of the 'explanations' are accurate.
- nsxwolf 12y agoCould the sensors be indeed flooding the device with terabytes of data, but the device can only sample that data at a more reasonable rate?
- snops 12y agoTo give an example, a raw 4K stream at 12 bit is about 500MB/s, so unless it has 2000 4K cameras, unlikely.
- AaronFriel 12y agoI think you forgot to multiply by a frame rate, otherwise you don't have a "per second" unit. At 60fps, it's 29.66 GiB/s.
- semi-extrinsic 12y agoWell, from that perspective, an analog temperature sensor is flooding your ADC with infinite GB/s. For further comparison: the fastest CPUs you can get nowadays have an aggregated memory bandwidth of ~ 90 GB/s using four lanes.
- 8note 12y agoif you have enough pins, a custom asic can do just about whatever you want. the data flowing into the HPU is likely huge, but it is processed down into something the CPU can deal with.
- semi-extrinsic 12y agoYeah, well, 4x DDR4 DIMMs have 4x288 = 1152 pins. If you want to be two orders of magnitude faster than that, you're talking on the order of 100 000 pins, which is just absurd.
- joezydeco 12y agoMaybe we're counting photons now.
- robotresearcher 12y agoOriginal Kinect data rates, measured empirically by a third party: Colour: 10.37 Mb/s Depth: 29.1 Mb/s Skeleton: 0.49 Mb/s So roughly 40Mb/s (4 * 10^7) Does this device produce > 1Tb/s (1 * 10^12) or 25,000 times as much data? I'd be surprised.
- trsohmers 12y agoTerabytes is out there, terabits not so much... I'm developing a single chip with 3Tbit (384GBytes/s) aggregate external (chip to chip) bandwidth, and with 8TByte/s aggregate internal (core to core) bandwidth.
- seanv 12y agoI feel like you're the kind of guy (or girl) who could explain really complex nerdy things to me on a regular basis and I'd be ok with that
- jamespitts 12y agoI believe that the TB reference comes from listening to Alex Kipman at the Microsoft announcement event. In speaking about the so-called "HPU" (around 01:50 in http://www.theverge.com/2015/1/21/7867593/microsoft-announces-windows-holographic http://www.theverge.com/2015/1/21/7867593/microsoft-announce..., second video) Kipman mentions "processing terabytes of information from all of these sensors". This is straight from the proverbial horse's mouth, and while it seems hype-ish it should be looked into. Anyone in here know about this HPU?