Slashdot Mirror


User: jandrese

jandrese's activity in the archive.

Stories
0
Comments
6,981
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 6,981

  1. My $0.02 on Some Biodegradable Plastics Don't Live Up To Their Claims · · Score: 4, Interesting

    20 years ago I got a yellow rain jacket (the trash bag kind) once when on a cruise by Niagra falls. Written on the back in huge block letters was the word "Biodegradable". It is still usable today. I have little trust of biodegradable plastics until I see proof.

  2. Re:Hes talking shit, as usual on Gabe Newell Understands Half-Life Fans, Not Promising Any Sequels · · Score: 5, Insightful

    The Duke Nukem release did do at least one bit of good for the community: It got everyone to stop talking about Duke Nukem Forever. Apparently some people just need closure.

  3. Re:I know we don't like EA... on SimCity's Empire Has Fallen and Skylines Is Picking Up the Pieces · · Score: 2

    They aren't curated. Anybody can put up a mod. There wouldn't be a jillion mods up for the game already if someone had to pick through them all by hand and check for security problems.

  4. Re:I know we don't like EA... on SimCity's Empire Has Fallen and Skylines Is Picking Up the Pieces · · Score: 5, Informative
  5. Re:I know we don't like EA... on SimCity's Empire Has Fallen and Skylines Is Picking Up the Pieces · · Score: 5, Interesting

    One thing to be aware of: Cities: Skylines mod support includes a full C# compiler and does not run in a sandbox. It has the potential to install malware on your machine.

  6. Re:I know we don't like EA... on SimCity's Empire Has Fallen and Skylines Is Picking Up the Pieces · · Score: 3, Informative

    There is a lot of talk about this on the various gaming boards. People go to insane lengths to work around the traffic model in the game. Apparently the devs are looking into it and may have a patch that helps things, but don't bet your life on it.

    The big lesson is that when a car spawns in Skylines it chooses a path at that very instant and absolutely will not deviate from the path. So all cars will all merge into the same lane because that's the lane that goes to your industrial district if that's how you have your roads laid out. Modders may be able to fix this as well.

    One piece of advice is not to use the built-in traffic circles (roundabouts), because they suck. Instead, build your own out of interstate road segments (the kind that don't have buildings next to them) and exit ramps. The reason is that interstates don't have stoplights on every corner so the traffic will flow through them smoothly. Also, don't be afraid to use the big 6 lane roads. Final tip: the "traffic view" in the statistics only measures road use, not congestion. Simply being heavily trafficked will turn it red, even if there is no appreciable congestion.

  7. Re:Virtual on GCHQ Builds a Raspberry Pi Super Computer Cluster · · Score: 4, Interesting

    I wonder which is faster. A box full of high end ATI cards doing GPU processing, or 64 RPis doing GPU processing? I'm guessing the ATI cards are probably faster because the Videocore IV on the Pi is pretty crappy. 66 Pis is roughly $2k. That would buy you 10 Radeon R9 280s, which is more than you can fit in a box. Lets assume you have 4 of them and use the other $1200 on the rest of the machine.

    This would get you 11,856 GFLOPS (4 * 2964) of raw performance. Those 64 Pis will crunch through roughly 1,536 GFLOPS (64 * 24). Wow, it's not even a contest. The big caveat will be power consumption, the Pis will be a lot more efficient than a modern Radeon card, offset by the fact that they'll have to work a lot longer to get the job done.

    So lets try using the CPUs instead. We'll compare this cluster against a modern medium-high end Intel processor. The Intel processor will be an I7-2600k. The Pis use a 700Mhz ARM processor that manages 0.041 GFLOPS, for a total of 2.624 GFLOPS. The Intel chip pushes 8.5 GFLOPS.

    As an efficient use of money, this Pi cluster is a total failure. As a research toy it has some value, but total performance is less than a fairly ordinary PC that costs roughly the same. This doesn't even count all of the switches and power supplies and whatnot you need for the Pi cluster. Even if you aggressively overclock all of the Pis they just won't catch up. In general you top out at about doubling the CPU performance of a Pi with aggressive overclocking and the GPU generally only overclocks about 50% or so. The power consumption figures aren't even all that different when you consider that the Pi needs to be crunching for at least 4 times as long on any particular problem and that you have 66 of them to feed. Even a couple of watts add up across that many machines.

  8. Re:Walks like a duck, quacks like a duck... on A Mars One Finalist Speaks Out On the "Dangerously Flawed" Project · · Score: 2

    This is what I've heard. They're turning the "training" into a reality TV show that's sort of a cross between Survivor and Biosphere 2. One thing they've never put any serious thought into is launching spacecraft or actually traveling to Mars, because that's way too far outside of their capabilities.

  9. Re:Kinda 50 50 on this one. on $56,000 Speeding Ticket Issued Under Finland's System of Fines Based On Income · · Score: 5, Insightful

    If the cops start abusing the rich and powerful we might see some actual changes in the system. Of course the first change I would expect would be for the old flat rate tickets to be reinstated.

  10. Re:well.. on $56,000 Speeding Ticket Issued Under Finland's System of Fines Based On Income · · Score: 3, Informative
    It's only a problem because we have not adopted it here. This system makes a lot of sense although it comes with a few caveats:
    1. You have to determine what someone's yearly income is. Some very wealthy people hide most of their income for tax purposes making this difficult.
    2. It creates sensational headlines when some Rockefeller is pulled over and gets an enormous fine (that they have no trouble paying).
    3. It hurts revenue generation for the police force because a lot of the people pulled over are in poverty and get small fines.
  11. Re:Fewer bug fixes? on NTP's Fate Hinges On "Father Time" · · Score: 1

    1 or 2 seconds can be an eternity depending on what you're doing. For pounding out documents in Word it's fine, but if you're correlating packet traces across multiple machines it's not good enough.

  12. Re:Fewer bug fixes? on NTP's Fate Hinges On "Father Time" · · Score: 1

    Windows Time Service only implements SNTP, which is why it lets the clocks drift a fair bit. It's mostly good enough for people who don't need sub-second precision, but you can do a lot better.

  13. Re:So did he write facebook or not? on Man Claiming Half Ownership of Facebook Is Now a Fugitive · · Score: 4, Informative

    No, the claim was that he loaned Zuckerberg $1000 in exchange for half of the company, and that both of them forgot about this until he stumbled across the contract while doing a little housecleaning or something. It should be noted that this guy has a history of contract fraud and forgery.

  14. There are some modern examples on Some of the Greatest Science Fiction Novels Are Fix-Ups · · Score: 1

    Andy Wier's The Martian started life as a chapter at a time blog. It only became a novel later when people started asking for a version they could put on their Kindles. One advantage of this format is that the author gets feedback after each chapter and can fix things on the fly.

  15. Re:Moderated comments like Slashdot? on On Firing Open Source Community Members · · Score: 1

    Reddit's system is also prone to drama at the moderator level.

  16. Re:Feature Request on Was Linus Torvalds Right About C++ Being So Wrong? · · Score: 1

    Isn't this what the tags are for?

  17. Re: ECC Memory on Exploiting the DRAM Rowhammer Bug To Gain Kernel Privileges · · Score: 1

    I'd rather most system came with ECC memory by default and "enthusiasts" could special order non-ECC memory to try to eek out another couple of FPS in the benchmark. It would be treated like overclocking. You trade off some system life and maybe a little stability to get a few percentage points more performance.

  18. Re:Never heard of it on Gigaom Closes Shop · · Score: 1

    True, but as long as that fraction is relatively consistent across similar websites it can give you a general idea of how big the audience is. They got a level of comments one might see on a local news station's website, suggesting probably only a few thousand regular readers on the site.

  19. Re: ECC Memory on Exploiting the DRAM Rowhammer Bug To Gain Kernel Privileges · · Score: 1

    Except that the ECC memory only costs so much because so few people buy it. It's a "business part". I don't think most consumer mobos are equipped to handle ECC memory either. It's a shame too because if the costs were in line with the actual hardware (it cost $112 instead of $160) and it was supported by the mobo manufacturers then I think a lot of system builders would go for ECC memory. $12 is not a bad price to pay to know when it is a faulty memory chip that's causing your system to crash and not something else, especially if the system tells you which bank is faulty so you don't have to waste time swapping DIMMs around looking for the one causing the crash.

  20. Re:possible iOS Exploit? on Exploiting the DRAM Rowhammer Bug To Gain Kernel Privileges · · Score: 1

    There is a definite maybe. One caveat of the process is that it requires access to special instructions to flush the cache constantly (hundred of thousands of times per second), and a processor fast enough to pound the memory controller. Those could be handicaps to running this exploit on a smartphone platform. It looks like modern phones use DDR3 derived memory (older phones like the iPhone 4 are DDR2 style and this won't work) so it's not impossible.

  21. Re:What else will Cameraphones ruin? on YouTube Video of Racist Chant Results In Fraternity Closure · · Score: 1

    He's not even playing word games. He's outright saying that he's racist and proud of it because he's obviously superior to the other races and that's not even a debatable point. He's just saying that he won't hold his obvious superiority against them. The reddit link on the bottom was the cherry on top.

  22. Re:Never heard of it on Gigaom Closes Shop · · Score: 1

    With one exception their articles never garnered more than 15 comments. It's clear that they had utterly failed to get their name out.

  23. Re:A laptop with almost no ports?! on Apple's "Spring Forward" Event Debuts Apple Watch and More · · Score: 1

    How much does the memory, backlit retina display, SSD, etc... draw?

    You're pretty much stuck using the no doubt $75 Apple adapter for the near future. Plugging this thing into your existing USB hub is not going to work.

  24. Re:Buy Apple Stuff! on Apple's "Spring Forward" Event Debuts Apple Watch and More · · Score: 3, Insightful

    Yeah, it's totally crazy that a tech site would cover a major Apple event where they announce an entirely new class of products as well as several refreshes. They even put it in a single post instead of spreading all across the front page with separate articles for every announcement like some pages. You are complaining about a site doing exactly what they're supposed to be doing in the correct way.

  25. Re:A laptop with almost no ports?! on Apple's "Spring Forward" Event Debuts Apple Watch and More · · Score: 1

    Good luck finding a hub that can supply enough power to charge a laptop.