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Comment: Because, well, it is unrealistic... (Score 1) 574

by OmniGeek (#48508685) Attached to: Hawking Warns Strong AI Could Threaten Humanity

It might be as simple as the AI saying, "Hey, here's a cool new device I think we should make." It could provide the schematics of a device that would seem to do one thing, but if we're incapable of understanding how the device works, there might be some entirely different purpose.

Vernor Vinge dealt with this topic rather convincingly with the Blight in "A Fire Upon The Deep".

The great stumbling block to any such possibility (aside from the immense improbability of our being able to develop a self-aware machine in the first place) is that we haven't developed computing hardware capable of remaining operational for very long without ongoing maintenance and a reliable supply of electric power. Any AI dependent on these resources would be utterly dependent on human goodwill for its continued existence. Reboot the poor sod and "it's a whole new world for ducks every day." Even the hypothetical Trojan-horse devices suggested by a Blight intelligence would be subject to the same limitations. Not exactly global conquest material.

Comment: My favorite Alto application: Mazewar (Score 3, Interesting) 121

by OmniGeek (#48203141) Attached to: Xerox Alto Source Code Released To Public

In 1977 or thereabouts, I was a co-op student at Xerox' Webster, NY Research Center. At lunchtime, I had access to an Alto, and spent far too much time playing MazeWar, a networked multi-player real-time 3D-perspective game wherein the players navigated a maze (displayed as wireframe 3D with an overhead map at the side), finding other players (who appeared as giant floating eyeballs) and zapping them. Once zapped, you respawned elsewhere in the maze and attempted to sneak up on your opponent and return the favor.

The graphics were extremely simple; there was no detail in the walls, just lines showing the edges, and player positions were limited to the center of each grid square; player movement was in discrete jumps. All of this was done to reduce the computational load for the graphics, of course. As a result, the system was very responsive, and the experience was quite immersive.

Comment: Not faked GPUs... (Score 4, Informative) 76

by OmniGeek (#47773585) Attached to: Fake NVIDIA Graphics Cards Show Up In Germany

I've read the Heise articles in the original German, and the GPUs were not faked; the cards were an older generation graphics card (~10% of the graphics throughput of the claimed item) with the video BIOS hacked to zero out the card manufacturer ID and the GPU type twiddled to fool the driver into thinking it was the newer card. According to the articles, NVidia is tracing the GPUs through the supply chain by their internal serial numbers.

I would speculate that someone bought up a truckload of obsolete cards, reflashed the BIOS images, and relabeled them with plausible product ID labels. Could have been the Chinese manufacturer, could have been someone elsewhere in the pipeline.

Comment: The chilling thing about Ted Unangst's analysis (Score 5, Interesting) 301

by OmniGeek (#46715395) Attached to: Theo De Raadt's Small Rant On OpenSSL

As I read his analysis, OpenSSL relies on releasing a buffer, reallocating it, and getting the PREVIOUS contents of that buffer back -- or else it will abort the connection. (Search for the string "On line 1059, we find a call to ssl3_release_read_buffer after we have read the header, which will free the current buffer." in his article referenced by the parent post).

Now, IMO, this goes way beyond sloppy. Releasing a buffer before you're done with it, and relying on a wacky LIFO reallocation scheme giving you back that very same buffer so you can process it, is either 1) an utterly incompetent coding blunder that just happened to work when combined with an utterly terrible, insecure custom allocation scheme, or 2) specifically designed to ensure that this insecure combination is widely deployed to provide a custom-made back door, as it works only with the leaky custom allocator.

If 1), then I must agree with Theo that the OpenSSL team were indeed irresponsible, since at least one of these two cooperating blunders ought to have shown up in a decent security audit of the code, and any decent set of security-oriented coding standards would forbid them both.

If 2), then it was deliberate, and the tinfoil-hat crowd is right for once.

Comment: All roads may run ill... (Score 5, Informative) 227

by OmniGeek (#45214327) Attached to: Ask Slashdot: How Do You Choose Frameworks That Will Survive?

Been there, done that, wondered "What were we thinking?"

In selecting an instrumentation framework for a test system, we went through a careful process of defining what was important, listing the pros and cons of each competing option, ran some tests to see if both would run the instruments we needed, ... Aaaand chose the worse option of the two, as events ultimately showed. The choice was evidence-based, reasonable on the basis of what we knew at the time, and suboptimal. The system worked, but we had to do some ugly stuff to make it work.

Sometimes you just can't outwit Murphy.

Comment: Beside the point. (Score 5, Interesting) 189

by OmniGeek (#43558507) Attached to: Was Google's Motorola Mobility Acquisition a Mistake?

Two important things are missed here:
1) Google mainly bought the patent portfolio for defensive purposes, not as revenue engines in themselves. The point of the suit is that MS wants to use the patents without paying for them. It's basically a move in the MS-vs-Android war.
2) The judgement doesn't pass the smell test. Read the articles over at Groklaw for the details, but the judge here is ruling that Motorola must accept patent pool rates for a pool they don't belong to, rather than negotiate rates using the methods of the group they are a member of. The whole proceeding has been slanted toward the home team (MS) the judgment seems to be very much an overreach, and probably won't survive appeal.

Comment: Nine-track cat-o-nine-tails (Score 2) 208

by OmniGeek (#34536712) Attached to: Stunts, Idiocy, and Hero Hacks

I once was a sysop for a small company's Data General system, where large datasets were stored as TAR archives on nine-track tapes; some poor soul had copied TO the tape instead of FROM the tape, and desperately needed to recover a file that was still there on the part of the tape beyond the end of the inadvertent write. You could read up to the added end-of-tape marker, but the tape just wouldn't read any further. Screwed, yes? Well, not quite. I set the system to rereading the damaged tape, waited 'till just before it reached the offending end-of-tape marker, and briefly put my thumb on the roller that measured tape travel, causing the drive to jump the tape ahead ('cause the sensor said "the tape is not moving!") and right past the EOT marker. Voila! The system read out the rest of the files on the tape, fortunately including the one they really needed, and I was briefly a hero. Hero never lasts, of course, but it was fun.

Comment: Re:Why is it sad? (Score 2, Insightful) 226

by OmniGeek (#33722128) Attached to: Soviet Shuttle Buran Found In a Junk Heap

For me, as a space enthusiast and aerospace professional, the sad part is that *anyone* would get a shuttle orbiter project so close to operational that they could launch, orbit, and land a fully-automated prototype -- and then just lose that entire program. The physical remnant is, as you say, just "stuff," and not really important in itself. What I (and, I believe, others) mourn is the loss of a manned space-launch program that came THAT close to being operational, regardless of just whose program it was. I, for one, still believe that the more different parties we have with active space programs, the better it is for humanity as a whole; there's a big solar system out there, with both resources and hazards aplenty, and the long-term benefit of the species definitely includes being active in space.

Comment: Sorta defeats the purpose, doesn't it? (Score 1) 316

by OmniGeek (#33284672) Attached to: Linux Wall Warts Small On Size, Big On Possibilities

I've read a few postings elsewhere complaining of poor thermal design, iffy build quality, and not-so-great software support (something about having to JTAG the beast to get it to run a software load), so this seems quite plausible. If you do away with the wall-wart form factor by extracting the power supply, you're in the same functional class as lots of other single-board systems (such as my current favorite, the BeagleBoard), many of which have quite mature software support and very decent I/O and expansion capabilities, for comparable cost. While I admit that the wall-wart idea is very appealing, I don't think it's quite there yet (which is rather a pity).

Comment: I call Godwin's Law! (Score 0, Redundant) 578

by OmniGeek (#32875398) Attached to: Claimed Proof That UNIX Code Was Copied Into Linux

Trying to imply that this is some nonsense that should be dismissed just because you like Linux is like playing down and ridiculing the evidence of the murder of Hans Reiser's wife because you like ReiserFS. It's even sillier in some ways because Linux isn't at stake in the case like ReiserFS was. (An extreme analogy I know, but valid).

That's the kind of analogy that Hitler would have made.

Comment: No whiskering. (Score 1) 103

by OmniGeek (#31375924) Attached to: New Heat-Reduced Magnetic Solder Could Revolutionize Chip Design

Tin whiskers only form in the presence of pure tin, as in a tinned PC board trace or component lead. Combine the tin with lead or silver or anything else, and the pure tin crystal structure won't happen, hence no whisker formation. Tin whiskers (dendrites) form when a layer of pure tin is mechanically stressed; the tin recrystallizes as dendrites in response to the strain on the crystal lattice. The recent increase in tin whiskering is due in part to hazmat-reduction regulations that discourage the use of lead solder, causing manufacturers to plate component leads in tin rather than lead-bearing solder.

Just go with the flow control, roll with the crunches, and, when you get a prompt, type like hell.

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