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Comment Re:Autonomous vehicles (Score 1) 157

This is second successful trial of autonomous vehicles in traffic we've heard about (the first is Google). It's clear that technology is viable. It's clear what benefits it will give.

The arguments against this technology remind me the early days of the Web: it was widely believed by skeptics that no one will ever use the Web for commerce because (1) there's no framework for financial responsibility, (2) internet backbone is closed for commercial traffic, and (3) there is no accepted technical solution for HTTP encryption, and encryption packages are considered controlled technology by US government and are prohibited to be freely distributed. All these objections were solved or waived in a couple of years.

Comment Threats are not serious (Score 2, Insightful) 103

None of the described future attacks are feasible. Shared framebuffer is not accessible to applications directly for security reasons (authors think that this is "unfortunate"); direct access to framebuffer is not "inevitable" in the future -- much better technique is to use driver-controlled fast GPU blits: data doesn't leave GPU. Non-timesharing is non-issue -- driver can detect timeouts and reset hardware (TDR on Vista).

So the only issue is polymorphic virus that may use GPGPU decryption. If this happens, scanners will start using CUDA, or GPU virtualization.

Comment Re:The best part about in-browser GPU acceleration (Score 1) 360

Many (all?) modern GPUs have virtual addressing with page protection. Switching is handled by kernel mode driver (we are talking Vista+) and is not controllable from user space. Now we are talking KMD attack which is not different in principle from any Ring 0 driver code attack. Good luck!

Comment Re:A Chapter of Microsoft's Marketing Team (Score 2, Insightful) 383

In Microsoft's defense (dangerous here I know) the vast majority of Vista problems HAVE been resolved months if not years ago. Further, most of those were hardware issues (nVidia..) and sloppy programming of other programs and thus NOT Microsofts fault. The single biggest obstacle it faces now are uninformed customers who heard "their computer guy" tell them two years ago that vista = evil and now refuse to listen to anything otherwise.

Sure there are some that still have problems, but most of them would have problems on a computer no matter the OS. Vista as it is today and during the mojave ads is actually very nice.

Microsoft acknowledged their problems (even though they weren't actually at fault), resolved them, and then tried to inform consumers that they had been fixed. Apple is rather just saying its not our fault to begin with.

Comment Re:Question (Score 1) 144

I take it you've missed the last twenty Slashdot articles about this. The problem is that many of these books are rare (so the library won't have a physical copy) and still in copyright (so the library can't provide a digital copy legally). Google gets around the second point by having settled a class-action lawsuit which allows them to copy any books that they like. No other organisation has this, and until copyright law is sufficiently reformed or the settlement is thrown out under antitrust legislation (it's currently under review) this will continue to be a problem.

Comment Re:Vista reserves 1 GB (Score 1) 983

Who modded parent up? Totally misleading.

Windows /3GB switch controls amount of virtual memory available to a process. Not physical. Virtual. The rest of virtual memory space goes to OS. Low memory (2 or 3 GB) is user process visible (ring3) memory. The upper 2 or 1 GB are ring0 memory. No need to change memory mapping (no need to flush TLB) on a simple syscall that goes back to the same process. Linux does the same thing. [OSX prefers to give userland 4GB virtual memory]

The fact you need /3GB switch illustrates that there are applications that need more than 2GB of virtual space per process. What if you run a number of these apps? Does 4GB look like a lot of memory now?

In fact, Crysis on 64bit Vista with very high settings and res can start swapping to disk because it outgrows 4GB. This is a single app plus graphics drivers.

And, the #1 reason to have virtual memory: memory-mapped files.

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