I've written some highly optimized code for MMX/MMXExtended and altivec.
A 500Mhz G4 is about 30% faster than a 1.3Ghz Athlon when running these image filtering functions...
And the Athlon is using DDR, while the G4 has only a 100mhz bus... and the functions place a huge demand on both the integer units and the memory interface.
Basically my point is...
I'm not convinced that a 2.5Ghz P4 is faster than a DualG4... when running highly optimized vector code.
And that's of course the reason people need 2.5Ghz PCs:)
(don't tell me you need that much power for a typing letters;))
BUT, I haven't written SSE2 versions yet, and SSE2 does seem to be fairly competitive with AltiVec (not as good, but competitive, AltiVec makes MMX 'feel' like a cheap toy)
I've been running into a new acronymn the last few weeks
VMX.
Its a PowerPC vector instruction ISA...
Anywho, the most interesting run in was in an IBM publication where they referred to AltiVec/VMX as the vector instructions on a Motorola 74XX 'G4' CPU
Anywho, point is, the only people in the entire world I've heard referring to AltiVec as VMX are IBMers:)
But IBMers like to use alternative words to the rest of the computer industry;)
Anywho, my prediction is these chips feature a VMX unit;)
It is a very IBM sounding acronym, and matches up with other vector ISA names... MMX, SSE, SSE2, VIS, MDMX etc
Doubles are only the same size as ints when ints are the same size as doubles.
(yes, seems obvious)
but on most 32 bit architectures doubles are 64 bits and ints are 32 bits. (mind you, the 68k compilers generally used either 16 bit or 32 bit ints... depending)
on 64 bit architectures, int might be equal to long equal to double.
BUT YOU CAN NOT ASSUME THIS.
you can't even assume that long long is 64 bits...
The problem is Apple's, but it is not Apple's fault.
Motorola needs to update the G4s to have a DDR memory controller.
Apple has done about as much as they can by moving their motherboards (at least the XServe's) to DDR even though the actual CPUs don't know what DDR is.
The truth is, DDR mobos with a single non-ddr cpu is practically useless.
Its motorola's fault and they need to do something about it:(
The trick is, the XServe's memory subsystem can saturate BOTH processors...
just because its saturating the processors doesn't mean they're not stalling waiting for memory accesses.
I've written quite a lot of altivec code, and the single largest problem with ALL G4s is that they DO NOT have a DDR type memory bus.
AltiVec code is almost ALWAYS stalled waiting for main memory.
But when you actually finding something compute intensive enough that the memory bandwidth is not really an issue, only then, do you truly see how impressive AltiVec is.
Windows 95 refuses to boot on an Athlon 1.3Ghz running at 1.3Ghz, or 1.1 or 1.2Ghz but will boot fine when running at 1Ghz, of course, It displays the speed as 999mhz...
Well, as you can see apple have had major and minor point releases to...
Heh.
Its just that they have a different version scheme
The major point releases tend to be paid upgrades..., but note that that means UPGRADE pricing.
the minor point releases tend to be free... and these days they come via software update anyway.
Point is... Having paid for OSX 10.1 many people would greatly appreciate upgrade pricing to 10.2, rather than full retail.
Anywho, back to the timeline, you'll notice apple tends to use the second (major point) for major upgrades... the first number is for serious technological changes normally...
6 was a unified system including optional multifinder, and hd support.
7 was the modern classic system (ie with a desktop), and permanent multifinder, virtual memory, aliases, etc etc
8 was with the funky platinum look and a nanokernel (The XP of Classic Mac OS I suppose).
9 saw the introduction of the cleaned up classic APIs as the Carbon APIs which allows Carbon apps to run natively on OSX, and really long filenames etc.
Anyway, rebuilding the desktop is definately not in the same class of problems as windows decay... I suppose you could put it in the same class as "registery optimizing", but then again, how many windows users do that (and how many mac users actually rebuild there desktops)
Also, failing to rebuild the desktop will have hardly any effect long term on a macs performance... otherwise your mac would do it automatically every x changes or x days etc
Actually, the desktop file is mainly used to track applications, application icon associations (ie BNDLs), and file comments.
It does not track file locations
I generally don't rebuild it... when I was using Classic MacOS I probably rebuilt it no more than once a year... but in reality, I never really rebuilt it because when I did my HD upgrade thing (ie, insert new HD, select all of one hd, drag to the other) that would have a side effect of rebuilding the desktop.
Zapping the PRAM and Rebuilding the desktop are not actually really required, and aren't normally the solution to most problems:)
Rebuilding the desktop is only really the solution when you have a file association problem (generic icons etc) and PRAM is really only the solution when you have AppleTalk problems:)
Slashdot Mirror
I've written some highly optimized code for MMX/MMXExtended and altivec.
:)
;))
A 500Mhz G4 is about 30% faster than a 1.3Ghz Athlon when running these image filtering functions...
And the Athlon is using DDR, while the G4 has only a 100mhz bus... and the functions place a huge demand on both the integer units and the memory interface.
Basically my point is...
I'm not convinced that a 2.5Ghz P4 is faster than a DualG4... when running highly optimized vector code.
And that's of course the reason people need 2.5Ghz PCs
(don't tell me you need that much power for a typing letters
BUT, I haven't written SSE2 versions yet, and SSE2 does seem to be fairly competitive with AltiVec (not as good, but competitive, AltiVec makes MMX 'feel' like a cheap toy)
Apparently the single core lite versions are just multi-core versions where the other cores failed testing...
:)
;)
of course I have no idea if this is true or not
Have you seen the size of those Power4 MCMs?
I can't really imagine an iMac with one
The firmware :)
http://www.openfirmware.org/
Well, I hope its nothing like intel's 900mhz ARMv5 part...
Performance isn't really very stunning...
A G4/500 is about... 4-8 times faster
Of course, this is because of AltiVec... but then again, isn't that the whole point?
I've been running into a new acronymn the last few weeks
:)
;)
;)
VMX.
Its a PowerPC vector instruction ISA...
Anywho, the most interesting run in was in an IBM publication where they referred to AltiVec/VMX as the vector instructions on a Motorola 74XX 'G4' CPU
Anywho, point is, the only people in the entire world I've heard referring to AltiVec as VMX are IBMers
But IBMers like to use alternative words to the rest of the computer industry
Anywho, my prediction is these chips feature a VMX unit
It is a very IBM sounding acronym, and matches up with other vector ISA names... MMX, SSE, SSE2, VIS, MDMX etc
that is soooo not true.
Doubles are only the same size as ints when ints are the same size as doubles.
(yes, seems obvious)
but on most 32 bit architectures doubles are 64 bits and ints are 32 bits. (mind you, the 68k compilers generally used either 16 bit or 32 bit ints... depending)
on 64 bit architectures, int might be equal to long equal to double.
BUT YOU CAN NOT ASSUME THIS.
you can't even assume that long long is 64 bits...
The problem is Apple's, but it is not Apple's fault.
:(
Motorola needs to update the G4s to have a DDR memory controller.
Apple has done about as much as they can by moving their motherboards (at least the XServe's) to DDR even though the actual CPUs don't know what DDR is.
The truth is, DDR mobos with a single non-ddr cpu is practically useless.
Its motorola's fault and they need to do something about it
The trick is, the XServe's memory subsystem can saturate BOTH processors...
just because its saturating the processors doesn't mean they're not stalling waiting for memory accesses.
I've written quite a lot of altivec code, and the single largest problem with ALL G4s is that they DO NOT have a DDR type memory bus.
AltiVec code is almost ALWAYS stalled waiting for main memory.
But when you actually finding something compute intensive enough that the memory bandwidth is not really an issue, only then, do you truly see how impressive AltiVec is.
Damn, I wish they made G4s which had DDR!
I love Apeiron as well...
:)
;)
:)
Its millipede
but really fast, and really cool
great for a quick bash
Are tiny Apple security updates really Slashdot material?
:)
... story, was checked my software update.
YES!
Well, apple.slashdot material.
I mean, first thing I did after reading the
I believe Bungie released the source to the marathon trilogy, and there is an effort to port it to OpenGL...
Aleph One
So, you can run that on almost any modern OS, as long as you have the original marathon data files
http://source.bungie.org/
(OSX version is available!)
Windows 95 refuses to boot on an Athlon 1.3Ghz running at 1.3Ghz, or 1.1 or 1.2Ghz but will boot fine when running at 1Ghz, of course, It displays the speed as 999mhz...
Go figure...
OR,
;)
1) sarge installed OpenSSh earlier... assuming he's an australian, he's ahead of you...
and his machine was then the first one to phone home...
Mister BlackHat waltz right back into openbsd hq and updates the archive with his new zombies IP, and gets rid of his old one...
2) another australian decided to install ssh, with what happens to be a binary with some other poor sods IP in it...
logs into security related channel, asks who's had issues with OpenSSH recently...
etc etc
heh... pretty slim odds... but not *THAT* slim
spelunker n.
One who explores caves chiefly as a hobby; a caver.
[From obsolete spelunk, cave, from Middle English, from Old French spelunque, from Latin spelunca, from Greek spelunx.]
spelunking n.
You forgot 9.2 - 9.2.1 - 9.2.2
:)
Yep, sorry
Yep.
:)
He just needs some long hair first
The real question is what use is a computer without network access ;)
;)
Well, to be fair, a laptop does have a minor excuse... being that you can use it as a notepad
Hmmm.
No, I think you're not very familiar with the mac time line...
I'll try to be complete... but I probably will make mistakes and be incorrect.
System 6
6.0 - 6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.0.5, 6.0.6, 6.0.7, 6.0.8
System 7
7.0 - 7.0.1, 7.0.1p
7.1 - 7.1.1, 7.1.2 (And System 7 Pro)
7.5 - 7.5.1, 7.5.2, 7.5.3, (7.5.4 skipped) 7.5.5
Mac OS
7.6 - 7.6.1
8.0 - ???
8.1 - ???
8.5 - 8.5.1, 8.5.2
8.6 - ???
Mac OS 9
9.0 - 9.0.1, 9.0.2, 9.0.3, 9.0.4
9.1 - 9.1.1, 9.1.2
Mac OS X
Public Beta:
10.0 - 10.0.1, 10.0.2, 10.0.3, 10.0.4
10.1 - 10.1.1, 10.1.2, 10.1.3, 10.1.4, 10.1.5
10.2 -
Well, as you can see apple have had major and minor point releases to...
Heh.
Its just that they have a different version scheme
The major point releases tend to be paid upgrades..., but note that that means UPGRADE pricing.
the minor point releases tend to be free... and these days they come via software update anyway.
Point is... Having paid for OSX 10.1 many people would greatly appreciate upgrade pricing to 10.2, rather than full retail.
Anywho, back to the timeline, you'll notice apple tends to use the second (major point) for major upgrades... the first number is for serious technological changes normally...
6 was a unified system including optional multifinder, and hd support.
7 was the modern classic system (ie with a desktop), and permanent multifinder, virtual memory, aliases, etc etc
8 was with the funky platinum look and a nanokernel (The XP of Classic Mac OS I suppose).
9 saw the introduction of the cleaned up classic APIs as the Carbon APIs which allows Carbon apps to run natively on OSX, and really long filenames etc.
X was of course OS X
Anyway, rebuilding the desktop is definately not in the same class of problems as windows decay... I suppose you could put it in the same class as "registery optimizing", but then again, how many windows users do that (and how many mac users actually rebuild there desktops)
Also, failing to rebuild the desktop will have hardly any effect long term on a macs performance... otherwise your mac would do it automatically every x changes or x days etc
Actually, the desktop file is mainly used to track applications, application icon associations (ie BNDLs), and file comments.
:)
:)
It does not track file locations
I generally don't rebuild it... when I was using Classic MacOS I probably rebuilt it no more than once a year... but in reality, I never really rebuilt it because when I did my HD upgrade thing (ie, insert new HD, select all of one hd, drag to the other) that would have a side effect of rebuilding the desktop.
Zapping the PRAM and Rebuilding the desktop are not actually really required, and aren't normally the solution to most problems
Rebuilding the desktop is only really the solution when you have a file association problem (generic icons etc) and PRAM is really only the solution when you have AppleTalk problems
Heh...
:)
Yes... although it will require restarts every month or so...
A Win98 machine is simple incapable of staying up for more than a month or so
Hate to tell you this... but in the 16 years I've been using macs or so I've never had to format and reinstall due to a decaying operating system ;)
Mind you, I've had to reinstall Win95/98 many times due to decay...
In all fairness though, I still haven't really had a decay problem with Win2k
You could consider the Apple II the first Personal Computer,
:)
;)
The Mac was not the first personal computer... but it was the first personal computer with a REAL gui.
At one time the Apple II series did in fact dominate the market... and then IBM saw that market... and wanted in
I suppose the Mac did dominate the graphical user interface market fairly well for a while...
And from there, it grew to dominate the page layout, graphics, video etc markets...
ie, any market which relied on a visual rather than textual representation.
And then windows happened
What is commonly transmitted over FM radio signals?
Music. Yes, Music. The #1 thing transmitted over FM radio signals.
Ummm, lets see... ads, schlock-talk, drive-time crud, ads, more ads, still more ads, and every now and again, some piece of top-40 junk.
Music is most likely NOT the #1 thing transmitted over FM radio signals.
http://csrc.nist.gov/encryption/aes/aesfact.html
;))
(or you could just mod up the previous guy
Including the all important "What is the Advanced Encryption Standard (AES)?"