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$100,000 Prize: Prove Quantum Computers Impossible

Hodapp Re:You can't prove a negative (324 comments)

Nothing is inherent in negatives that makes them unprovable. Please quit repeating this.

more than 2 years ago
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Open Source IDE GAMBAS Reaches 3.0

Hodapp Re:need a good C++ IDE, though (137 comments)

I have found Qt Creator much easier to work with than Visual Studio. It requires some more explicit management in its project files (as they are just QMake projects), but I've found that I prefer this to the endless point-and-click mazes that VS subjects me to.

It's handy enough on its own for C/C++ projects, independent of whether you are using Qt or not, but it's extremely helpful for developing applications that use Qt as it integrates very well with Qt Designer.

more than 2 years ago
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Ask Slashdot: Best Camera For Getting Into Photography?

Hodapp Re:Sony NEX either C-3 of N5 (569 comments)

(Megapixels do matter if you plan to make prints beyond 8x10s.)

[citation needed]

about 3 years ago
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Censored Religious Debate Video Released After Public Outrage

Hodapp Re:I'm a dude who knows God loves you, Jesus is LO (717 comments)

Bible actually teaches that God and Jesus are two totally separate entities and that it is blasphemy to call Jesus a God.

Citation on this?

more than 3 years ago
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Ask Slashdot: Recovering Data From 20-Year-Old Diskettes?

Hodapp Re:Norton Disk Doctor (375 comments)

I second this.

Norton Disk Doctor recovered things more times than I could count, back when I'd use already-used diskettes over and over and over again and not make backups...

more than 3 years ago
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Verizon Cracks Down On Jailbreak Tethering

Hodapp Re:How do they tell? (286 comments)

I'm told they do it by examining the TTL of the packets, as in most cases packets through a tethered device will have a lower TTL than any traffic coming from the device itself.

more than 3 years ago
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More Users Are Shunning Facebook

Hodapp Re:Go live real life (411 comments)

Using Facebook (or any other online social network) and living a real life are not mutually exclusive.

more than 3 years ago
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The iPad's Progenitor — 123 Years Ago

Hodapp Re:Eat up Martha (123 comments)

I used a Newton eMate for awhile and its handwriting recognition was actually the best on anything I'd ever used. However, other things - such as the device being mind-bogglingly slow (though I suppose the Newton MessagePads were fine) and any sort of good syncing with a modern computer being at best a convoluted mess - made it less than useful for me.

more than 3 years ago
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Research Suggests E-Readers Are "Too Easy" To Read

Hodapp Why E-readers? (185 comments)

Assuming for the moment that they've found a real connection...

Why does this article single out E-readers? Doesn't everything there apply just the same to LCDs, CRTs, printed material, and anything else that is capable of rendering those same easily-read fonts?

more than 3 years ago
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Preserving Great Tech For Posterity — the 6502

Hodapp Re:watch the voltages race around the chip (290 comments)

In some sense, it does. What they're talking about, I believe, is watching it propagate through gates at each clock cycle.

more than 3 years ago
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Kodachrome Takes Its Final Bow Today

Hodapp Re:Maybe its time for a new 35mm film? (262 comments)

This might be impossible, but film has a number of things over even the best digital cameras. From color gradients (256 levels of RGB versus infinite), to the fact that it is quite difficult to doctor film without that being detected (at least easier than firing up Photoshop.)

Well, to be fair, film also has its limitations with the levels it can store. It's not exactly an even comparison, but it has a measure called film density which (if memory serves me) is a logarithm of the ratio of the amount of silver exposed in the most developed areas, to the amount of silver exposed in the least developed areas. This measure is around 2.8 for negatives and 3.2 for slides, and each step of 0.1 means an extra 1/3 of a stop of available range. As a change of 1 stop means a doubling of range, corresponding roughly to one bit of dynamic range, this gives equivalent bit depths between about 9 and 11. But like I said, it's not an even comparison... but it's not anywhere near infinite either.

Also, most digital cameras nowadays have ADCs that quantize to somewhere between 10 and 16 bits, not 8.

more than 3 years ago
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Kodachrome Takes Its Final Bow Today

Hodapp Re:Alternative ways to develop? (262 comments)

Shows that I know about as much about photography as the original poster...

Thanks for the enlightenment.

more than 3 years ago
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Kodachrome Takes Its Final Bow Today

Hodapp Re:Alternative ways to develop? (262 comments)

Development in this case is the process which produces a negative from the exposed film.

However, once you have a negative, what you describe is indeed a viable process.

more than 3 years ago
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Kuwait Bans DSLR Cameras Use For Non-Journalists

Hodapp Re:funny and ironic (446 comments)

One of the biggest determining factors of quality still is the physical size of the sensor. I think you'll find the images will differ in quality quite a bit if you compare side-by-side.

about 4 years ago
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Flash Can Rob 2 Hours From MacBook Air's Battery Life

Hodapp Re:Branding (509 comments)

Well, on basically all Apple notebooks the glowing Apple logo is simply a transparent section that the already-lit backlight illuminates. Are there other glowing Apple logos I missed?

more than 4 years ago
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Breathing New Life Into Old DirectDraw Games

Hodapp Re:Blood (274 comments)

It might be possible to run Blood in a source port of the BUILD engine. I know that Duke Nukem 3D can be run this way (and indeed my friend ran the icculus.org version on his Powerbook this way), but I don't know how well it works for the other BUILD-based games like Duke3D and Shadow Warrior.

more than 4 years ago
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Apertus, the Open Source HD Movie Camera

Hodapp Re:Free or Open (152 comments)

A casual perusal of any open forum on the Internet will readily show that zealotry just as intense is plenty rampant. See: Politics, sports, cars.

more than 4 years ago
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Why 'Gaming' Chips Are Moving Into the Server Room

Hodapp Re:A whole new level of parallelism (137 comments)

I am one such programmer. Yet I also coded for an Nvidia Tesla C1060 board and found it much more straightforward to handle several thousand threads at once.

Not all types of threads are created equal. I usually explain CUDA to people as the "Zerg Rush" model of computing - instead of a couple, well-behaved, intelligent threads that try to be polite to each other and clean up their own messes, you throw a horde of a thousand little vicious, stupid threads at the problem all at once, and rely on some overlord to keep them in line.

Most of the guides explained it as, "Flops are free, bandwidth is expensive." This board had a 384 or 512-bit wide memory bus with a very high latency, and the reason you throw that many threads at it is to let the hardware cover up the latency - it can merge a huge number of memory reads/writes into one operation, and as soon as a thread is waiting on memory I/O it can swap another thread into that same SP and let it compute. If memory serves me, the board was divided into blocks of 8 scalar processors (each block had some scratchpad memory that could be accessed almost as fast as a register) and you wrote groups of 16 threads which ran in lock-step on that processor (no recursion was allowed, and if one branched, the others would just wait around until it reached the same point) in two rounds.

Sure, that's a bit complex to optimize for, but it beats the hell out of conventional threading while trying to optimize for x86 SIMD. And if you manage to write it so it runs well on CUDA, it generally will scale effortlessly to whatever card you throw it at.

It's looking like OpenCL won't be much different, but I have yet to try it. I'm kind of eager, since apparently AMD/ATI's current cards, for the money, have a bit more raw power than Nvidia's.

more than 4 years ago
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'Forest Bathing' Considered Healthful

Hodapp Re:Breaking news (252 comments)

Whoa, that's weird, I just read it 10-15 minutes ago, but it's pay-walled now for me too.

more than 4 years ago
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'Forest Bathing' Considered Healthful

Hodapp Re:Breaking news (252 comments)

Both groups "got off their ass" and "went outside". The comparison was between walking in a city area, and walking in a forest.
Did you even open the article?

more than 4 years ago

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