"Slashdot and Stupidity I visit Slashdot once per day, sometimes more, because they seem to do a really good job of relaying the geek zeitgeist. It's a long time since I read much of the follow-ups, but I thought I ought to this time, and I'm reminded why. How can a publication that caters (on the face of it) to smart people attract the attention of so many shallow, drivelling morons?"
"Interactivity Again There were a few smart things there in among the chaff on/., and by following back the links in from other blogs, I sure did learn a whole bunch about the state of the programming art as regards XML. Some of the things I said were wrong (or at least open to challenge), and I got fodder for a really substantial follow-up piece, which I'll get around to soon. I don't suppose it's mathematically possible for everyone to get their theses batted around by some tens of thousands of well-informed people, which is a real pity."
http://www.tbray.org/ongoing/When/200x/2003/03/1 9/ Who
http://www.tomshardware.com/mobile/20020827/inde x. html
A review of USB 2.0 and Firewire drives at Tom's site indicates that real world throughput is bottlenecked by the interface to about HALF the theoretical max.
Why so slow? Is it all overhead? Poor optimization? Should we always assume that real world performance is approx half that of the theoretical max?
I just so happened to purchase one last week. And so far I'm pretty damn happy.:)
Nex IIe player $89 Compact Flash 1GB $215
shopping.yahoo.com
The reasons I went with this route: My HD based Dlink RoqIt and CD based player flakes out in severe cold and the batteries drain quick (couple hours). I don't like to use car AC adatpers because of the cable clutter. And both devices have skipped while in the car. (Annoying)
Compact Flash Players...
Pros- -Compact Flash is a standard and gets bigger and cheaper all the time, and is compatible with dig cameras, etc. (Sony's SmartMedia is stuck at 128) -No moving parts (NO SKIP, less susceptible to heat/cold) -Long battery life. (supposedly 15 hours on 2 AA's, which is convenient since I have tons of rechargeable NiMH batteries) -Tiny as hell. -There's even a car adapter. -Will support OGG.
Cons- -The interface needs to be improved. I need an easier way to traverse large lists of mp3's. -It should remember where it left off after powering down the player. -The nexIIe only supports directory's 1 level deep
Note: I haven't had a chance to upgrade the firmware yet. Perhaps these things have been addressed...
Re:What is an example that can't run in parallel?
on
Forget Moore's Law?
·
· Score: 1
"If you accept this, then it would seem, in principal, that with high enough bandwidth and low enough latencies, a cluster could provide an advantage in real-time."
A single cpu will have faster "interconnects" and lower latencies internally than multiple cpu's over a bus. In essence, intra-cpu communication is faster than inter-cpu communication.
Theoretically, they could be the same. But realistically, this will never be the case because of material limitations and cost.
So for an application like Doom, you will always be better off with 1 super fast processor, than multiple slower processors.
Re:What is an example that can't run in parallel?
on
Forget Moore's Law?
·
· Score: 1
The parent post's question was poorly phrased.
He wanted to know what kind of applications don't scale well with an increase in CPU's. Thus his example:
"Oh, the machine at Worst Buy has 128K processors, while the machine at Circus Shitty has only 64K processors!"
Doom and many other games/real time 3d graphics will not benefit from a jump from 1 CPU to 128.
You are better off having one super powerful CPU rather than 2 slower cpu's.
"Clusters can scale, but the max speed is limited. "
That statement is a contradiction.
If something scales well, there is by definition no "max speed" or well defined upper boundary if you will. The credibility of your post is at best suspect to me.
Re:What is an example that can't run in parallel?
on
Forget Moore's Law?
·
· Score: 1
Doom 3:D
Seriously, realtime 3d graphics/games will not scale well on a cluster. This is where having a tremendously powerful processing unit (whether it be on the video card or motherboard) will be better than many less powerful processors.
"Can Samba be a Backup Domain Controller? With version 2.2, no. The native NT SAM replication protocols have not yet been fully implemented. The Samba Team is working on understanding and implementing the protocols, but this work has not been finished for version 2.2.
Can I get the benefits of a BDC with Samba? Yes. The main reason for implementing a BDC is availability. If the PDC is a Samba machine, a second Samba machine can be set up to service logon requests whenever the PDC is down."
Re:It would be a difficult target...
on
Columbia Coverage
·
· Score: 1
And how much would the yearly security budget cost for every year this elevator is in operation. Round the clock JSTARS, AWACS, SAM sites, submarines, etc. sound very expensive.
Also, how about Pacific storms? Typhoons, killer waves (tsunami's), etc.? The DoD and the best engineering/materials in the world cannot protect us from mother nature's worst.
1. The insulation hitting the wing on takeoff caused damage. 2. Terrorism. (bomb on board?) 3. Collision with space junk coming out of orbit/in orbit/etc.
You use Albert Einstein as example of a talented individual who followed the good road.
However, Einstein laid the groundwork for the atomic bomb (e=mc^2). And I'm sure many more deaths can be attributed to atomic bombs than violent 3d gaming. How do you rationalize that?
The Q3 client probably does not transmit the "physics calculations", but the current position instead. (scalar, not vector)
The physics is prolly done all client side along with the rendering.
Regardless, I've seen this "bug" for myself. I think it was level Q3DM8, there is a ledge with a super health that you normally have to drop down on. However, after changing the max frame rate to 125, I was able to jump onto the ledge.
I learned this after I asked someone after watching others jump onto it, but I couldn't for the life of me.
Has this been exploited? Yes. To what extent, I don't know. Of course, I haven't played Q3 in a long time. May have been addressed in a recent patch.
I believe the Imax formatted films run at 60 FPS. I remember watching a documentary where they monitored an audience hooked up to electrodes to measure their autonomic responses, and they felt 60 fps was the sweet spot.
And since you are a student, go show it to a CS professor for immediate feedback. My guess will be that you haven't properly analyzed the O(n) performance.
I used to leave the power supply plugged in to for that same reason on my ATX Abit board.
Then I dropped a screw onto the motherboard and the computer came to life! Scared the hell out of me I tell ya.
Rather than reaching for the screw and causing a short-circuit or fire destroying my brand new mb, i unplugged the machine and thanked God that my system was fine afterwards. whew...
I guess that experience is closest to working on a dead person in a morgue and have them move/come to life. hehe...
"Gateway is going to use Corel over MS Office in their day to day office work."?
I think it would be interesting to see large companies like Dell, Gateway, etc switch to non-MS software (Open Office, Corel, etc) for their internal operations.
Slashdot Mirror
google - a mathematical term for ten to the hundredth power, famously first uttered by a mathematician's infant child.
;)
you could try and google it, but you'll find a bunch of stuff on the search engine instead. Try a dictionary.
The low cost and sheer size of compact flash cards prompted me to purchase a Nex IIe mp3 player. Picked up a sandisk 1GB card for $200. :)
Now the Nex IIe is a nice player, but I have some issues with the interface...
Why are there so few other players on the market?
poking around his site I came across this. hehe.
/., and by following back the links in from other blogs, I sure did learn a whole bunch about the state of the programming art as regards XML. Some of the things I said were wrong (or at least open to challenge), and I got fodder for a really substantial follow-up piece, which I'll get around to soon. I don't suppose it's mathematically possible for everyone to get their theses batted around by some tens of thousands of well-informed people, which is a real pity."
1 9/ Who
"Slashdot and Stupidity I visit Slashdot once per day, sometimes more, because they seem to do a really good job of relaying the geek zeitgeist. It's a long time since I read much of the follow-ups, but I thought I ought to this time, and I'm reminded why. How can a publication that caters (on the face of it) to smart people attract the attention of so many shallow, drivelling morons?"
"Interactivity Again There were a few smart things there in among the chaff on
http://www.tbray.org/ongoing/When/200x/2003/03/
I absolutely loved Conan The Barbarian. The musical score to that movie is one of the best soundtracks ever.
If I had the resources, I would make a sequel worthy of the first. I would pretend the 2 other sequels never existed. They sucked so hard...
I also dug BTLC. That electric Raiden-like character was so freaking cool.
This reminds me...
e x. html
http://www.tomshardware.com/mobile/20020827/ind
A review of USB 2.0 and Firewire drives at Tom's site indicates that real world throughput is bottlenecked by the interface to about HALF the theoretical max.
Why so slow? Is it all overhead? Poor optimization? Should we always assume that real world performance is approx half that of the theoretical max?
I just so happened to purchase one last week. And so far I'm pretty damn happy. :)
Nex IIe player $89
Compact Flash 1GB $215
shopping.yahoo.com
The reasons I went with this route:
My HD based Dlink RoqIt and CD based player flakes out in severe cold and the batteries drain quick (couple hours). I don't like to use car AC adatpers because of the cable clutter. And both devices have skipped while in the car. (Annoying)
Compact Flash Players...
Pros-
-Compact Flash is a standard and gets bigger and cheaper all the time, and is compatible with dig cameras, etc. (Sony's SmartMedia is stuck at 128)
-No moving parts (NO SKIP, less susceptible to heat/cold)
-Long battery life. (supposedly 15 hours on 2 AA's, which is convenient since I have tons of rechargeable NiMH batteries)
-Tiny as hell.
-There's even a car adapter.
-Will support OGG.
Cons-
-The interface needs to be improved. I need an easier way to traverse large lists of mp3's.
-It should remember where it left off after powering down the player.
-The nexIIe only supports directory's 1 level deep
Note: I haven't had a chance to upgrade the firmware yet. Perhaps these things have been addressed...
"If you accept this, then it would seem, in principal, that with high enough bandwidth and low enough latencies, a cluster could provide an advantage in real-time."
A single cpu will have faster "interconnects" and lower latencies internally than multiple cpu's over a bus. In essence, intra-cpu communication is faster than inter-cpu communication.
Theoretically, they could be the same. But realistically, this will never be the case because of material limitations and cost.
So for an application like Doom, you will always be better off with 1 super fast processor, than multiple slower processors.
The parent post's question was poorly phrased.
:
He wanted to know what kind of applications don't scale well with an increase in CPU's. Thus his example
"Oh, the machine at Worst Buy has 128K processors, while the machine at Circus Shitty has only 64K processors!"
Doom and many other games/real time 3d graphics will not benefit from a jump from 1 CPU to 128.
You are better off having one super powerful CPU rather than 2 slower cpu's.
"Clusters can scale, but the max speed is limited. "
That statement is a contradiction.
If something scales well, there is by definition no "max speed" or well defined upper boundary if you will. The credibility of your post is at best suspect to me.
Doom 3 :D
Seriously, realtime 3d graphics/games will not scale well on a cluster. This is where having a tremendously powerful processing unit (whether it be on the video card or motherboard) will be better than many less powerful processors.
"Can Samba be a Backup Domain Controller?
/ ht mldocs/samba-bdc.html
With version 2.2, no. The native NT SAM replication protocols have not yet been fully implemented. The Samba Team is working on understanding and implementing the protocols, but this work has not been finished for version 2.2.
Can I get the benefits of a BDC with Samba? Yes. The main reason for implementing a BDC is availability. If the PDC is a Samba machine, a second Samba machine can be set up to service logon requests whenever the PDC is down."
You can find out more here...
http://us2.samba.org/samba/ftp/cvs_current/docs
And how much would the yearly security budget cost for every year this elevator is in operation. Round the clock JSTARS, AWACS, SAM sites, submarines, etc. sound very expensive.
Also, how about Pacific storms? Typhoons, killer waves (tsunami's), etc.? The DoD and the best engineering/materials in the world cannot protect us from mother nature's worst.
Here's some food for thought...
The person is interested in the vibration from cooling fans.
What about the 300+ watt surround sound systems with mega sub woofers playing mp3's, dvd's, etc?
Are there natural resonating frequencies to be avoided? Or just low bass frequencies in general?
I believe there may have been a previous "ask slashdot" that attempted to address this issue.
3 possibilities come to mind.
1. The insulation hitting the wing on takeoff caused damage.
2. Terrorism. (bomb on board?)
3. Collision with space junk coming out of orbit/in orbit/etc.
You use Albert Einstein as example of a talented individual who followed the good road.
However, Einstein laid the groundwork for the atomic bomb (e=mc^2). And I'm sure many more deaths can be attributed to atomic bombs than violent 3d gaming. How do you rationalize that?
The Q3 client probably does not transmit the "physics calculations", but the current position instead. (scalar, not vector)
The physics is prolly done all client side along with the rendering.
Regardless, I've seen this "bug" for myself. I think it was level Q3DM8, there is a ledge with a super health that you normally have to drop down on. However, after changing the max frame rate to 125, I was able to jump onto the ledge.
I learned this after I asked someone after watching others jump onto it, but I couldn't for the life of me.
Has this been exploited? Yes. To what extent, I don't know. Of course, I haven't played Q3 in a long time. May have been addressed in a recent patch.
Has anyone here watched the movie(s) first and then read the books? Would you have done it the other way around if you could?
Easily replace all PDC's and BDC's?
I believe samba cant perform as a backup domain controller, and there are some other shortcomings that may/may not affect many users.
I would not feel comfortable running without a BDC in a large setting.
Distributed Computing.
Harnessing the proofreading computing power of human minds on the internet. very cool...
I wonder what other problems can be successfully tackled this way.
I believe the Imax formatted films run at 60 FPS. I remember watching a documentary where they monitored an audience hooked up to electrodes to measure their autonomic responses, and they felt 60 fps was the sweet spot.
what actions are they taking internally? Firing the relevant IT staff? Implementing new security measures? If nothing, then i smell a PR stunt.
If I were running the company, my first reaction would be to identify the security problem internally.
As I was just studying algorithms last night. The following is considered one of the most definitive books on algorithms.
2 01 896850/qid=1035291515/sr=8-3/ref=sr_8_3/002-899931 0-6640041?v=glance&n=507846
Art of Computer Programming, Volume 3: Sorting and Searching by Donald Knuth
http://www.amazon.com/exec/obidos/tg/detail/-/0
And since you are a student, go show it to a CS professor for immediate feedback. My guess will be that you haven't properly analyzed the O(n) performance.
I used to leave the power supply plugged in to for that same reason on my ATX Abit board.
Then I dropped a screw onto the motherboard and the computer came to life! Scared the hell out of me I tell ya.
Rather than reaching for the screw and causing a short-circuit or fire destroying my brand new mb, i unplugged the machine and thanked God that my system was fine afterwards. whew...
I guess that experience is closest to working on a dead person in a morgue and have them move/come to life. hehe...
Should I go read the books first and spoil the movie or should I go watch the movie first then read the books?
"Gateway is going to use Corel over MS Office in their day to day office work."?
I think it would be interesting to see large companies like Dell, Gateway, etc switch to non-MS software (Open Office, Corel, etc) for their internal operations.