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Comment: Re:I PC game, and have zero reason to upgrade (Score 0) 93

by wagnerrp (#47807317) Attached to: AMD Releases New Tonga GPU, Lowers 8-core CPU To $229

Physics can already be done on the GPU very well - the development we're waiting for is getting data back off the GPU and into main system memory fast enough for the CPU to be able to use it (ie, this stuff being used for gameplay, not just eye candy). That won't happen until there's a rethink on how GPUs are connected to the mainboard

This isn't the turn of the century with your new fangled AGP 4x graphics card. PCI Express is symmetric. You can pull data in from peripherals just as fast as you can push it out. If there is a bottleneck in pulling computed physics data from modern graphics cards, it's entirely the fault of the internal design of those modern graphics cards.

Comment: Re:The coral will need guard rails around it (Score 1) 75

by wagnerrp (#47785525) Attached to: For $1.5M, DeepFlight Dragon Is an "Aircraft for the Water"

Any kind of sonar that is actually useful for this purpose will be far more damaging to the reef's ecosystem than having the occasional sub bump into it.

You're not trying to find submarines hiding on the other side of a thermocline. You're just trying to track any obstructions within a couple dozen feet.

Comment: Re:Who pays the ticket? (Score 1) 475

by wagnerrp (#47706237) Attached to: Google's Driverless Cars Capable of Exceeding Speed Limit

You are "driving" a Google automated car. You get pulled over for doing 10 over the speed limit.

Won't happen, barring a software bug, and a software bug IS an unavoidable liability of writing software. Google allows their autonomous vehicles to maintain pace with the flow of traffic, up to ten miles per hour above the posted speed limit. If the average flow of traffic exceeds the posted speed limit, it indicates the posted speed limit is much too low for the conditions of the road. Further, it would require everyone on the road to be similarly breaking the speed limit, which would mean those other hundreds of vehicles would all have to be simultaneously pulled over and ticketed, which is a logistical impossibility.

Comment: Re:Why speed only a little? (Score 4, Insightful) 475

by wagnerrp (#47706109) Attached to: Google's Driverless Cars Capable of Exceeding Speed Limit

Come now. What percentage of people on the road actually have any situational awareness? They're not looking around to track voids in traffic should they need to change lanes in an emergency. They're not looking downstream to see that accident half a mile away and traffic backing up. They're watching no further than the brake lights in front of them. Even if they are trying to pay attention, it takes a hell of a lot of concentration and practice to constantly track a dozen cars around you in all directions, and a hell of a lot more to anticipate movements when those cars leave line of sight. This sort of thing is trivial for a computer.

As for "self", are you referring to the current state of the car? Surely autonomous control tied into your vehicle's data bus with direct access to engine sensors, accelerometers, gyroscopes, suspension deflectometers, and all manner of other equipment would have a much better chance of assessing the current state of the vehicle than the driver.

Comment: Re:Left or Right? (Score 2) 475

by wagnerrp (#47706009) Attached to: Google's Driverless Cars Capable of Exceeding Speed Limit
The US has no hard limit. If you're breaking the speed limit, you're breaking the speed limit, and it's the discretion of the office how bored/lazy/behind_on_quota they are as to whether you get pulled over and ticketed. The fact that the UK has actually codified this is absurd. Why not just bump the signage by that much, and make the signs themselves the hard limit?

Comment: Re: There we go again (Score 2) 383

by wagnerrp (#47647585) Attached to: DARPA Wants To Kill the Password

The point he was making is that with proper procedure, a hash could never be attacked offline. As soon as the hash database were compromised, all hashes contained therein would be invalidated. The attacker could brute force that database to their heart's content, and no valid passwords would ever result from it.

This of course assumes the administrators are paying close enough attention to notice in short order when the database has been compromised, and that all users define a secondary means of contact through which to send a reset password. It also ignores the issue that most users use the same username and password across multiple sites, such that a pair compromised on one site and invalidated as described would still be valid on another site.

Comment: Re: Would YOU be able to sleep in space?? (Score 1) 106

by wagnerrp (#47637871) Attached to: Study Finds That Astronauts Are Severely Sleep Deprived

For the first couple of seconds you are in a true freefall, relatively unencumbered by air resistance, accelerating.

You're already experiencing significant drag when you jump out of that aircraft at 100 knots. You're only in something closely resembling freefall when you jump from a balloon, or base jump.

Comment: Re:Why bother? (Score 2) 113

by wagnerrp (#47607721) Attached to: SpaceX Chooses Texas Site For Private Spaceport
Florida is a good thousand miles away from the Texas launch facility. It would take more fuel to continue downrange and land in Florida than it would to turn back and land in Texas. Florida might be a good landing site for a recoverable Falcon Heavy center stage, but they're likely only around 100mi down range by first stage cutoff.

The meat is rotten, but the booze is holding out. Computer translation of "The spirit is willing, but the flesh is weak."

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