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Search: Posts Made By: davechen
Thread Thread Starter Last Post Replies Views Forum
Yeah, compiling is much better suited to the... 1,244 Views / 4 Replies  
Yeah, compiling is much better suited to the Intel processor than the G5. It's a lot of branchy, integer instructions. Practically no floating point or vector type instructions. So it's no...
Posted by davechen, on Jun 8, 2006 at 09:43 AM, in Developer Center
BA Computer Science & Astronomy, 1988, UC... 4,270 Views / 152 Replies  
BA Computer Science & Astronomy, 1988, UC Berkeley
MS Computer Science, 1991, UNC
PhD Computer Science, 1998 UNC
Posted by davechen, on Aug 8, 2005 at 03:02 PM, in MacNN Lounge
Yup. We authenticate our Macs to an SGI server... 850 Views / 10 Replies  
Yup. We authenticate our Macs to an SGI server running NIS. It's just a matter of setting it up then the Directory Access utility.

However we're going to move away from NIS and SGI's, probably...
Posted by davechen, on Jun 13, 2005 at 04:22 PM, in macOS
I have a masters (and doctorate) in CS. I have... 1,057 Views / 14 Replies  
I have a masters (and doctorate) in CS. I have to agree with mozilla fan. I'm pretty dubious of on-line degrees. A lot of what I learned in grad school came from interacting with other students,...
Posted by davechen, on Jan 29, 2005 at 06:19 AM, in Developer Center
Yeah, I develop on a Mac, but I don't use Xcode. ... 783 Views / 7 Replies  
Yeah, I develop on a Mac, but I don't use Xcode. We use CMake (http://www.cmake.org) to generate Makefiles for our code. Our code works on Linux too, and used to work on Windows. Someday we might...
Posted by davechen, on Jan 26, 2005 at 11:31 AM, in Developer Center
You should be able to just change the includes at... 1,314 Views / 21 Replies  
You should be able to just change the includes at the top and it should work. Delete the include <windows.h> and change the next three to:

#include <OpenGL/gl.h>
#include <OpenGL/glu.h>...
Posted by davechen, on Jan 19, 2005 at 12:18 AM, in Developer Center
Tcl is a scripting language so you don't need to... 584 Views / 2 Replies  
Tcl is a scripting language so you don't need to compile a tcl program. You can download an installation of Tcl from here:

http://sourceforge.net/projects/tcltkaqua/
Posted by davechen, on Dec 27, 2004 at 08:37 PM, in Developer Center
From an economic standpoint the higher degrees... 2,201 Views / 36 Replies  
From an economic standpoint the higher degrees probably aren't worth it. A doctorate is almost certainly not worth it. But for me a PhD allowed me to do more interesting work. I do research in...
Posted by davechen, on Oct 29, 2004 at 11:49 PM, in Developer Center
I used SGI's for many years, and we still have a... 767 Views / 5 Replies  
I used SGI's for many years, and we still have a couple left, an Octane 2 and a deskside Onyx. Many years ago I did a summer internship at SGI too. I had a great time. Worked on a cool product,...
Posted by davechen, on Sep 21, 2004 at 11:44 PM, in MacNN Lounge
I connect my G5 to an Apple 23" Cinema Display... 1,993 Views / 7 Replies  
I connect my G5 to an Apple 23" Cinema Display and a projector. The Cinema display connects via the ADC port and the projector uses the DVI port. You should be able to do likewise, though my...
Posted by davechen, on Aug 25, 2004 at 10:11 PM, in Mac Desktops
In case you missed it Zhang Ziyi is going to star... 3,941 Views / 93 Replies  
In case you missed it Zhang Ziyi is going to star in the film adaptation of Memoir of a Geisha. It'll be interesting to see how good her English is, since that's what it's going to be shot in.

My...
Posted by davechen, on Aug 23, 2004 at 01:24 PM, in MacNN Lounge
http://www-306.ibm.com/software/awdtools/caix/ ... 1,314 Views / 8 Replies  
http://www-306.ibm.com/software/awdtools/caix/

It looks like the AIX version is $945. The Mac OS X version is only $499. You can download 60 day trial versions of either one.
Posted by davechen, on Jul 21, 2004 at 07:03 AM, in Applications
Doesn't Dubya use a Mac? I thought I heard that. 1,275 Views / 32 Replies  
Doesn't Dubya use a Mac? I thought I heard that.
Posted by davechen, on Jun 22, 2004 at 11:56 PM, in Mac Notebooks
Robert Earl Keen. I'm not a big country music... 1,395 Views / 41 Replies  
Robert Earl Keen. I'm not a big country music fan, but he's a terrific songwriter.

Also Nanci Griffith and Lyle Lovett.
Posted by davechen, on May 26, 2004 at 03:43 PM, in MacNN Lounge
3 Sam Adams Cherry Wheat. Yeah, I know, it's a... 2,073 Views / 94 Replies  
3 Sam Adams Cherry Wheat. Yeah, I know, it's a girly beer.
3 Abita Turbodogs. I was so happy when I saw these at the beer store. First time I've seen it around here.
Posted by davechen, on May 11, 2004 at 11:06 AM, in MacNN Lounge
It's freaking HOT. 6 months out of the year it's... 9,716 Views / 30 Replies  
It's freaking HOT. 6 months out of the year it's a sauna. Housing prices are a lot cheaper than Seattle.

I didn't care for it. It's an ugly land of freeways, road construction and parking lots....
Posted by davechen, on May 9, 2004 at 01:19 PM, in MacNN Lounge
There shouldn't be a space after the D. It... 566 Views / 2 Replies  
There shouldn't be a space after the D. It should be "-DDEBUG".
Posted by davechen, on Apr 10, 2004 at 10:10 AM, in Developer Center
Doh! 596 Views / 4 Replies  
Doh!
Posted by davechen, on Mar 13, 2004 at 07:20 PM, in MacNN Lounge
United States Of Whatever Liam Lynch ... 15,766 Views / 205 Replies  
United States Of Whatever Liam Lynch United States Of Whatever (Single)
Mothers Of The Disappeared U2 Joshua Tree
I'Ve Grown Accustomed To Her Face Tony Bennett ...
Posted by davechen, on Mar 12, 2004 at 11:43 AM, in MacNN Lounge
Hey, at least we aren't coached by an overgrown... 3,143 Views / 167 Replies  
Hey, at least we aren't coached by an overgrown rodent.
Posted by davechen, on Mar 10, 2004 at 11:09 PM, in MacNN Lounge
Go Tar Heels! We should be back in the Big Dance... 3,143 Views / 167 Replies  
Go Tar Heels! We should be back in the Big Dance for the first time in three years. We've got terrific talent. We just need to play better defense and learn how to win. A good old dose of...
Posted by davechen, on Mar 10, 2004 at 10:33 PM, in MacNN Lounge
I went to UNC and used a Mac there, but mostly to... 1,037 Views / 17 Replies  
I went to UNC and used a Mac there, but mostly to write, surf the web and goof around. All the research back then was done on Unix systems.

These days it's much more varied, with some people...
Posted by davechen, on Mar 9, 2004 at 04:47 PM, in MacNN Lounge
JM Labs Electra 915.1 speakers Rega Mira... 2,403 Views / 54 Replies  
JM Labs Electra 915.1 speakers
Rega Mira amplifier
Bottlehead Foreplay pre-amp
Philips 963sa DVD/SACD player

One of these days I'll build a pair of 300B SET amps. Probably another Bottlehead...
Posted by davechen, on Feb 24, 2004 at 10:31 PM, in MacNN Lounge
Well, I'm a geek and I got sick of my work, so I... 500 Views / 2 Replies  
Well, I'm a geek and I got sick of my work, so I hacked up a perl script. It should do what you want. The scoring loop is kind of gross. It takes the strings from standard input.


#!...
Posted by davechen, on Feb 23, 2004 at 04:44 PM, in macOS
If you do a "strip a.out", (or whatever the... 1,602 Views / 35 Replies  
If you do a "strip a.out", (or whatever the executable's name is), you can cut the file size almost in half. strip removes all the debugging information.
Posted by davechen, on Feb 6, 2004 at 05:23 PM, in Developer Center
How about that! It actually worked. I... 761 Views / 8 Replies  
How about that! It actually worked. I definitely remember previous versions of OS X where the /etc/hosts file was ignored except if you booted into single user mode. Everything was stored in the...
Posted by davechen, on Oct 30, 2003 at 01:04 PM, in macOS
My favorite restaurant in New Orleans is Mother's... 750 Views / 17 Replies  
My favorite restaurant in New Orleans is Mother's (401 Poydras St.) Jambalaya, crawfish etoufee, debris poboys. Mmmm. I'm drooling just thinking about it.

Other classic New Orleans things to...
Posted by davechen, on Sep 22, 2003 at 04:32 PM, in MacNN Lounge
Re: SACD: The CD of The Future? 2,114 Views / 79 Replies  
But you probably aren't going to be able to tell the difference between a DVD-A or SACD from a CD on a computer's sound system. You really need a high quality stereo system to hear the improvement. ...
Posted by davechen, on Sep 11, 2003 at 10:16 AM, in MacNN Lounge
I used an Apple //e throughout college. 2,849 Views / 73 Replies  
I used an Apple //e throughout college.
Posted by davechen, on Aug 6, 2003 at 08:54 PM, in Mac Desktops
Re: C code Help needed 613 Views / 1 Replies  
You've either trashed a pointer that is then getting freed or you've trashed the heap by overwriting memory that you shouldn't have. Can you run your program in a debugger to see where it's...
Posted by davechen, on Apr 1, 2003 at 11:38 AM, in Developer Center
Re: Diablo II keyboard help 2,392 Views / 3 Replies  
You need to boot into OS 9. Open up the keyboard control panel. Hit the button that says function keys and then turn off the hot function thing. Quit the control panel to save your change and boot...
Posted by davechen, on Mar 3, 2003 at 05:23 PM, in Gaming
Re: Software mode OpenGL 748 Views / 6 Replies  
There must be something in your program that is querying the OpenGL renderer and bailing out when it doesn't find a hardware renderer. If an OpenGL program doesn't do something like that, it should...
Posted by davechen, on Jan 23, 2003 at 11:16 AM, in Developer Center
Similar to what Paul said, I use the "gq" command... 653 Views / 9 Replies  
Similar to what Paul said, I use the "gq" command in vim. The way I do it is as follows:

Go to beginning of the section I want to reformat.

Type "ma". This says to mark the current line as...
Posted by davechen, on Jan 23, 2003 at 11:12 AM, in macOS
Tom Christiansen, the Perl guru, wrote a big,... 808 Views / 7 Replies  
Tom Christiansen, the Perl guru, wrote a big, long treatise (http://www.faqs.org/faqs/unix-faq/shell/csh-whynot/) about why scripting in csh bad compared to sh.

But I still use tcsh for...
Posted by davechen, on Jan 2, 2003 at 06:43 PM, in macOS
You could put in a call to "usleep" and put your... 614 Views / 2 Replies  
You could put in a call to "usleep" and put your process to sleep for some amount of time. Or if you want to be clever, you could set up a timer that sends a signal every 60th of a second.
Posted by davechen, on Dec 30, 2002 at 04:31 PM, in Developer Center
Actually, she's Norwegian. There's a funny... 1,145 Views / 44 Replies  
Actually, she's Norwegian.

There's a funny post (http://slashdot.org/comments.pl?sid=48415&cid=4921676) by a Norwegian person over on Slashdot:
Posted by davechen, on Dec 19, 2002 at 06:00 PM, in MacNN Lounge
Add "-lobjc" to your link line. 1,171 Views / 16 Replies  
Add "-lobjc" to your link line.
Posted by davechen, on Nov 13, 2002 at 12:54 AM, in Developer Center
I'm gonna have to side with Milleneum. There's... 1,426 Views / 32 Replies  
I'm gonna have to side with Milleneum. There's something to be said for aesthetics and design quality. PowerPC is just a much nicer, much more elegant instruction set architecture than the x86.
...
Posted by davechen, on Oct 18, 2002 at 02:32 PM, in macOS
Here are some specs for the IBM 970 that David... 20,168 Views / 392 Replies  
Here are some specs for the IBM 970 that David Wang, who's attending the Microprocessor forum, posted over at Real World Tech...
Posted by davechen, on Oct 15, 2002 at 02:33 PM, in Mac Desktops
Actually, SGI's have 500 or 600 Mhz processors. ... 20,168 Views / 392 Replies  
Actually, SGI's have 500 or 600 Mhz processors. Looking at the Spec numbers (http://www.spec.org/osg/cpu2000/results/),
a 600 MHz R14000 is probably 50-60% of the performance of a 2.8 Ghz Xeon. ...
Posted by davechen, on Oct 5, 2002 at 11:27 PM, in Mac Desktops
Sure it does. Because you're just declaring a... 747 Views / 4 Replies  
Sure it does. Because you're just declaring a pointer to the struct, the compiler doesn't need to know about its size. It's the same thing as in C++ when you use a forward reference to a class.
...
Posted by davechen, on Sep 18, 2002 at 11:08 AM, in Developer Center
You can't do it, since the recursive definitions... 747 Views / 4 Replies  
You can't do it, since the recursive definitions would go on forever.

I.e, if you have a variable foo of type A, you could have

foo.bb.aa.bb.aa.bb...


On the other hand you can do
Posted by davechen, on Sep 17, 2002 at 07:03 PM, in Developer Center
From two of my favorite movies: "I work for... 2,164 Views / 69 Replies  
From two of my favorite movies:

"I work for Keyser Soze"


"We get caught laundering money, we're not going to white color resort prison. No, no, no. We're going to Federal pound me in the ass...
Posted by davechen, on Sep 12, 2002 at 11:53 PM, in MacNN Lounge
No, I don't think a file server or mail server... 834 Views / 15 Replies  
No, I don't think a file server or mail server would benefit from altivec. The types of problems that gain a lot from altivec are performing the same operations on large arrays of data such as...
Posted by davechen, on Aug 27, 2002 at 10:25 PM, in macOS
Re: Best Processor for Perl (and PHP) 834 Views / 15 Replies  
No, I don't think Perl or PHP use Altivec, since it's standard open source software that Apple hasn't optimized. Plus I doubt if they'd benefit from it, since they don't really map well to a vector...
Posted by davechen, on Aug 27, 2002 at 09:16 PM, in macOS
Poll: The Bear will not quit! The Bear will not die!... 834 Views / 24 Replies  
The Bear will not quit!
The Bear will not die!

Go Bears!
Posted by davechen, on Aug 27, 2002 at 05:22 PM, in MacNN Lounge
Oops, I misread your post. Late night surfing. 732 Views / 9 Replies  
Oops, I misread your post. Late night surfing.
Posted by davechen, on Aug 23, 2002 at 01:34 PM, in Developer Center
Recursive subdivision is the standard way of... 732 Views / 9 Replies  
Recursive subdivision is the standard way of rendering bezier curves, as opposed to evaluating it at uniform steps in t. With recursion you can have adaptive subdivision. With uniform steps its...
Posted by davechen, on Aug 23, 2002 at 12:53 AM, in Developer Center
Wow. I didn't know you could do all those... 1,351 Views / 15 Replies  
Wow. I didn't know you could do all those things, and I've been using Unix since the mid 80's. I'm sure csh couldn't do those prompt sequences back then. Heck, I only started using color xterms a...
Posted by davechen, on Aug 22, 2002 at 10:19 AM, in macOS
Re: Distances along Bezier Paths 732 Views / 9 Replies  
I did a google search on bezier curve arc length and found this link (http://research.microsoft.com/~hollasch/cgindex/curves/cbezarclen.html)

It sounds like what this guy did was to recursively...
Posted by davechen, on Aug 21, 2002 at 12:23 AM, in Developer Center
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