GenesisST
Oct 7, 12:18 PM
Curious. Why do you think Objective-C is not user-friendly and intuitive?
Cause it's not. I played with the iPhone SDK for a test app and had to relearn a few things. For example, the + or - in front of a method, which means instance or class method (or vice-versa). I could find the right information (or Google keywords) to get it without a few bouts of swearing.
Then my company got a contract to port an iPhone app to Android. And by port I mean rewrite since we can't share anything from obj-c to Java.
Coming from a C/C++ background, the learning curve was really quick. Plus Google did a relatively good job with its SDK and emulator which work pretty well on both Mac and Windows.
Cause it's not. I played with the iPhone SDK for a test app and had to relearn a few things. For example, the + or - in front of a method, which means instance or class method (or vice-versa). I could find the right information (or Google keywords) to get it without a few bouts of swearing.
Then my company got a contract to port an iPhone app to Android. And by port I mean rewrite since we can't share anything from obj-c to Java.
Coming from a C/C++ background, the learning curve was really quick. Plus Google did a relatively good job with its SDK and emulator which work pretty well on both Mac and Windows.
javajedi
Oct 11, 06:30 PM
Originally posted by javajedi
What you are saying makes a lot of sense. Now that I think about, I too recall reading this somewhere.
Now that we know the real truth about the "better standard FPU", I thought it was time to shed some light on non vectorized G4 integer processing.
It still does 200,000,000 calculations, but this time I'm multiplying ints.
Motorola 7455 G4@800Mhz: 9 seconds (Native)
IBM 750FX G3@700Mhz: 7 seconds (Native)
Intel P4@2600Mhz 2 seconds (Java)
PowerPC 7455 integer processing is consierabley better than floating point (obviously less work doing ints), but still less per cycle than the Pentium 4.
Very intresting the G4 looses both floating point and integer to the IBM chip, at a 100MHz clock disadvantage.
I'm still waiting to see that "better standard FPU" in the G4. It seems the G4 is absolutely useless unless you are fortunate to have vectorized (AltiVec) code.
Alex, yeah, the native version was compiled under 3.1. It really is interesting to note that despite the 750FX's 100MHz clock disadvantage, it is able to outperform it by 22%. Since there is a 13% difference in clock speed, and if clocks were equal, the 750FX is technically 25% more efficient in scalar integer. I should also re-emphasize that I never bothered compiling the test natively for x86, I left it java, so it's not out of the question the P4 could do this in 1 second - and that is *NOT* using any vector libraries, just plain old integer math.
I've found some documentation on the Altivec C programming interface, and this weekend I'm going to make a first attempt at vectorizing it. The integer test should be no problem, but my FPMathTest app that did square roots will be more difficult. With Altivec, there is not recognized double precision floating point, so this complicates doing square roots. If you want more accurate, precision square roots, you have to do Newton Raphson refinement. In other words more ************ you have to go through. I believe in SSE2 you have double precision floating point ops, and if you were to vectorize it, you wouldn't have to compensate for this.
Another theory as to why the P4 is scoring so good is because if I'm not mistaking (and I'm not), the P4's ALU runs at double its clock. So in my case, 5.6GHz. I'm sure this relates to the issue.
I don't know how true this is, but I wouldn't be suprised if there is some truth to it, surely some food for thought:
http://www.osopinion.com/perl/story/17368.html
The G4 was just a hacked-up G3 with AltiVec and an FPU (floating point unit) borrowed from the outdated 604
If this is the case, then no wonder why we are getting these abysmal scores, and no wonder why a 400mhz Celeron can nearly equal it, and no wonder why the 750FX can outperform it (different company, different fpu)
What you are saying makes a lot of sense. Now that I think about, I too recall reading this somewhere.
Now that we know the real truth about the "better standard FPU", I thought it was time to shed some light on non vectorized G4 integer processing.
It still does 200,000,000 calculations, but this time I'm multiplying ints.
Motorola 7455 G4@800Mhz: 9 seconds (Native)
IBM 750FX G3@700Mhz: 7 seconds (Native)
Intel P4@2600Mhz 2 seconds (Java)
PowerPC 7455 integer processing is consierabley better than floating point (obviously less work doing ints), but still less per cycle than the Pentium 4.
Very intresting the G4 looses both floating point and integer to the IBM chip, at a 100MHz clock disadvantage.
I'm still waiting to see that "better standard FPU" in the G4. It seems the G4 is absolutely useless unless you are fortunate to have vectorized (AltiVec) code.
Alex, yeah, the native version was compiled under 3.1. It really is interesting to note that despite the 750FX's 100MHz clock disadvantage, it is able to outperform it by 22%. Since there is a 13% difference in clock speed, and if clocks were equal, the 750FX is technically 25% more efficient in scalar integer. I should also re-emphasize that I never bothered compiling the test natively for x86, I left it java, so it's not out of the question the P4 could do this in 1 second - and that is *NOT* using any vector libraries, just plain old integer math.
I've found some documentation on the Altivec C programming interface, and this weekend I'm going to make a first attempt at vectorizing it. The integer test should be no problem, but my FPMathTest app that did square roots will be more difficult. With Altivec, there is not recognized double precision floating point, so this complicates doing square roots. If you want more accurate, precision square roots, you have to do Newton Raphson refinement. In other words more ************ you have to go through. I believe in SSE2 you have double precision floating point ops, and if you were to vectorize it, you wouldn't have to compensate for this.
Another theory as to why the P4 is scoring so good is because if I'm not mistaking (and I'm not), the P4's ALU runs at double its clock. So in my case, 5.6GHz. I'm sure this relates to the issue.
I don't know how true this is, but I wouldn't be suprised if there is some truth to it, surely some food for thought:
http://www.osopinion.com/perl/story/17368.html
The G4 was just a hacked-up G3 with AltiVec and an FPU (floating point unit) borrowed from the outdated 604
If this is the case, then no wonder why we are getting these abysmal scores, and no wonder why a 400mhz Celeron can nearly equal it, and no wonder why the 750FX can outperform it (different company, different fpu)
jiggie2g
Jul 12, 02:18 PM
any and ever motherboard has been designed with the chips lay out and logic requested by the vendor, in this case apple, the fact that they don't develop their own electronics changes nothing, freescale/IBM made the chipsets before the switch nothing has changed, apple outsourced the design of the board to intel sure but they are paying intel to do so somehow, anyway, the cost of support and manufacture rockets up too.
more i'm disappointed in you, i haven't seen you post in a year or so and your still the same childish n00b who completely misses the point.
the mac pro will be a pro machine, apple has never done a consumer tower and likely never will.
woodcrest is just conroe with SMP, overclocking is exactly the same, as in non existent due to EFI. professionals do not overclock their macs.
go play with your toys.
This coming from a guy who overclocks his AMD chips...... talk about being a hippocrate. I very much doubt apple will deviate much from intel reference design. I expect something similar to the Intel 975x Bad Axe Motherboard for the MacPro.
more i'm disappointed in you, i haven't seen you post in a year or so and your still the same childish n00b who completely misses the point.
the mac pro will be a pro machine, apple has never done a consumer tower and likely never will.
woodcrest is just conroe with SMP, overclocking is exactly the same, as in non existent due to EFI. professionals do not overclock their macs.
go play with your toys.
This coming from a guy who overclocks his AMD chips...... talk about being a hippocrate. I very much doubt apple will deviate much from intel reference design. I expect something similar to the Intel 975x Bad Axe Motherboard for the MacPro.
munkery
May 2, 04:26 PM
Fine, so I can write an installer that will just wipe your user account while you read my EULA and you'll happily execute it because "hey, it's just an installer" ? :rolleyes:
Is anybody actually bothering to do this in the wild against any OS?
This is not, but I'm interested in the mechanics because next time, it could very well be. That's my point. Some of you guys aren't cut out for computer security...
The types of attacks you are referring to are not occurring in the wild on a massive scale. When was the last time you heard about one in the media?
At the moment, there is no way to prevent the kinds of attacks you are referring to on any OS if a vulnerability exists that allows the attacker to exploit a running application.
Webkit2 will reduce access to user space when Safari (or any app using webkit2) is exploited by restricting the privileges of apps on a per app basis.
Turn off "Open safe files after downloading" if you are worried about that type of attack implemented via "safe" files.
Is anybody actually bothering to do this in the wild against any OS?
This is not, but I'm interested in the mechanics because next time, it could very well be. That's my point. Some of you guys aren't cut out for computer security...
The types of attacks you are referring to are not occurring in the wild on a massive scale. When was the last time you heard about one in the media?
At the moment, there is no way to prevent the kinds of attacks you are referring to on any OS if a vulnerability exists that allows the attacker to exploit a running application.
Webkit2 will reduce access to user space when Safari (or any app using webkit2) is exploited by restricting the privileges of apps on a per app basis.
Turn off "Open safe files after downloading" if you are worried about that type of attack implemented via "safe" files.
TalkAboutApple
Apr 5, 10:59 PM
I switched for a couple years...and then switched back, into Windows 7.
OSX seems really long in the tooth, other than time machine I can't think of clear advantages. The strange thing is that I find the UI lacking. I found I spent tons of time trying to manipulate the edges of windows for resizing, accidentally clicking on the desktop while in an application, etc.
I'd like to see some real innovation on the desktop, I know they can do it but it doesn't seem a priority.
OSX seems really long in the tooth, other than time machine I can't think of clear advantages. The strange thing is that I find the UI lacking. I found I spent tons of time trying to manipulate the edges of windows for resizing, accidentally clicking on the desktop while in an application, etc.
I'd like to see some real innovation on the desktop, I know they can do it but it doesn't seem a priority.
inkswamp
Oct 7, 06:38 PM
And because Android and Google operate in an "integrative and open environment, [they] could easily top ... the singular Apple," he said.
It's 2009. Are people still turned on by buzzwords like this?
I assume by "integrative and open," they mean open source. That's great and I love open source software (though there's been some debate as to how open Android really is) but here's the deal. Time and time again we see that what really matters in consumer tech is what works for the buyer, not what makes sense behind-the-scenes for developers. There are lots and lots of open source projects out there that have had success but very few instances where one has toppled and established closed source system. Even Firefox, one of the most popular pieces of open source software out there, is still way behind Internet Explorer.
If Apple keeps pumping out great ideas and maintains the level of quality they've delivered so far, there's no logical reason to think something will overtake it just because it's "integrative and open."
It's 2009. Are people still turned on by buzzwords like this?
I assume by "integrative and open," they mean open source. That's great and I love open source software (though there's been some debate as to how open Android really is) but here's the deal. Time and time again we see that what really matters in consumer tech is what works for the buyer, not what makes sense behind-the-scenes for developers. There are lots and lots of open source projects out there that have had success but very few instances where one has toppled and established closed source system. Even Firefox, one of the most popular pieces of open source software out there, is still way behind Internet Explorer.
If Apple keeps pumping out great ideas and maintains the level of quality they've delivered so far, there's no logical reason to think something will overtake it just because it's "integrative and open."
awmazz
Mar 14, 12:27 PM
This here page, fwiw (http://week.manoramaonline.com/cgi-bin/MMOnline.dll/portal/ep/contentView.do?contentId=8976200&programId=1073754912&pageTypeId=1073754893&contentType=EDITORIAL), says the carrier RR was exposed to thirty days radiation in an hour. There are more than 700 hours in a month. You do the math.
2 years exposure a day = 730 years worth of normal background exposure per annum. That's okay then, not as bad as I first calculated. No breast cancer there. Bring the pregnant women in. I'll drink milk from that cow, eat eggs from them chickens. We all get that flying a plane. Not.
2 years exposure a day = 730 years worth of normal background exposure per annum. That's okay then, not as bad as I first calculated. No breast cancer there. Bring the pregnant women in. I'll drink milk from that cow, eat eggs from them chickens. We all get that flying a plane. Not.
jettredmont
May 2, 11:50 AM
I haven't seen this malware first hand, but a zip file can be made with absolute paths, making "unzipping" the file put everything where it needs to be to start up automatically on next log in/reboot.
Who's the brainiac who made zip files "safe" ?
I don't believe the default .zip file handler will expand these zip files correctly. It will only unzip inside its own folder. At least, that used to be the case. Perhaps there is an exploitable bug there which has cropped up more recently.
I suspect they are taking advantage of one of the other security holes in OS X to get items added to login items, etc. Presumably this is at the user level only so I'm not sure even a "standard" user will be less at risk (there are minor differences between admin and standard users, such as needing permission to add something to /Applications, but if the malware here (it isn't a virus as it doesn't self-propagate; it isn't a trojan as it isn't disguised on entry) relies on that permission it was just poorly written. Each user has an Applications folder that even standard users can write to.
Who's the brainiac who made zip files "safe" ?
I don't believe the default .zip file handler will expand these zip files correctly. It will only unzip inside its own folder. At least, that used to be the case. Perhaps there is an exploitable bug there which has cropped up more recently.
I suspect they are taking advantage of one of the other security holes in OS X to get items added to login items, etc. Presumably this is at the user level only so I'm not sure even a "standard" user will be less at risk (there are minor differences between admin and standard users, such as needing permission to add something to /Applications, but if the malware here (it isn't a virus as it doesn't self-propagate; it isn't a trojan as it isn't disguised on entry) relies on that permission it was just poorly written. Each user has an Applications folder that even standard users can write to.
noahtk
Apr 9, 04:16 PM
Pay off Sony for PSP ports!!!
Huntn
Mar 13, 06:18 PM
The biggest wind farm in the world provides around 2MW/km^2. Your 100milesX100miles plant would only provide around 52 000MW (52GW) of power with same ratio. USA's power consumption in 2005 was 29PWh. I don't know how exactly this things can be converted but Fukushima I has installed power of 4.7GW and provides 25.8GWh each year while the biggest wind farm has installed capacity of 781MW. The plant you described would be around 10 times more powerful than the Fukushima but even then, it could provide around 250GWh which is a fraction of 29PWh.
Solar plants are better (80MW/km^2) but 10PWh is still far from 29PWh.
If someone knows how to convert these things properly or has more info on this, please educate me/us.
Maybe I can find a link. I've read (I think it was Popular Science) that a 10 square mile solar farm in the American West could provide enough to power the entire U.S. Now, due to distances, that power could not be transmitted to the East Coast, but it illustrates there are other much safer methods of obtaining power than dealing with the atomic genie.
Solar plants are better (80MW/km^2) but 10PWh is still far from 29PWh.
If someone knows how to convert these things properly or has more info on this, please educate me/us.
Maybe I can find a link. I've read (I think it was Popular Science) that a 10 square mile solar farm in the American West could provide enough to power the entire U.S. Now, due to distances, that power could not be transmitted to the East Coast, but it illustrates there are other much safer methods of obtaining power than dealing with the atomic genie.
Moyank24
Mar 11, 02:31 AM
As of 0730 GMT, Philippines is now under alert level 2. Its now 0830 GMT. Bracing for tsunami in the next hour.
http://ndcc.gov.ph/attachments/article/165/NDRRMC%20Advisory%20Tsunami%20Bulletin%20No.%202,%2011March2011,%203PM.pdf
Oh wow. Hopefully that will give people anywhere near the shores time to reach higher ground.
http://ndcc.gov.ph/attachments/article/165/NDRRMC%20Advisory%20Tsunami%20Bulletin%20No.%202,%2011March2011,%203PM.pdf
Oh wow. Hopefully that will give people anywhere near the shores time to reach higher ground.
nozebleed
May 5, 10:51 AM
I still believe its just where you are at in the country. This graph is the exact opposite of what I experience. Verizon work phone - SHITE. Dropped calls so bad I forwarded the number to my iPhone. AT&T personal phone - no dropped calls.
skunk
Mar 14, 06:18 PM
Nobody seems to think of abandoning coal when a bunch of miners die. I think there have been more coal related deaths than nuclear ones.What coal-fired power station had the capability of endangering so many people?
LegendKillerUK
Mar 18, 08:22 AM
You agreed to a contract. Live with it or pay to get out of it, couldn't be simpler.
Mattie Num Nums
Apr 13, 09:43 AM
[SIZE=1]
Part of the reason established IT folk feel so threatened by Apple.
HAHAHHAHAHAHHAHHAHAHHAHAHHAHAHHAAAAAAAHHAHAA!
OMG I almost fell out of my chair cracking up when I saw this last statement. That just goes to show just how much you DON'T know. IT professional don't feel threatened at all by Apple. Its just the opposite. After Apple dropped the Xserve and delivered us a Macbook Pro Early 2011 that requires its own special build of OSX most IT professionals are rethinking the Apple strategy all together. I know here and a lot of places are moving away from XServes into the Windows world. If you want to see real Mac IT professionals check out the JAMF Casper User Forum. Some of the brightest Mac admins in world. We are all pretty much in the same boat. Apple is making our jobs harder and making it harder for us to justify getting Macs for our customers. Thank God for a company like JAMF because Apple hasn't given any of its IT supporters tools to support the environment. Unlike lets say... Microsoft. :rolleyes: How great is it when a VP comes up to you and says we need 50 copies of X software but we can only get it from the AppStore. Apple doesn't care about the IT world or its corp. user base.
Part of the reason established IT folk feel so threatened by Apple.
HAHAHHAHAHAHHAHHAHAHHAHAHHAHAHHAAAAAAAHHAHAA!
OMG I almost fell out of my chair cracking up when I saw this last statement. That just goes to show just how much you DON'T know. IT professional don't feel threatened at all by Apple. Its just the opposite. After Apple dropped the Xserve and delivered us a Macbook Pro Early 2011 that requires its own special build of OSX most IT professionals are rethinking the Apple strategy all together. I know here and a lot of places are moving away from XServes into the Windows world. If you want to see real Mac IT professionals check out the JAMF Casper User Forum. Some of the brightest Mac admins in world. We are all pretty much in the same boat. Apple is making our jobs harder and making it harder for us to justify getting Macs for our customers. Thank God for a company like JAMF because Apple hasn't given any of its IT supporters tools to support the environment. Unlike lets say... Microsoft. :rolleyes: How great is it when a VP comes up to you and says we need 50 copies of X software but we can only get it from the AppStore. Apple doesn't care about the IT world or its corp. user base.
rdowns
Mar 24, 07:17 PM
The Catholic Church doesn't hate homosexuals
Hate the sin, love the sinner. ;)
Hate the sin, love the sinner. ;)
spacemanspifff
Apr 6, 08:11 AM
Once you start using it, you'll find that the Mac OS is a much more intuitive system, but you may have to unlearn the ways of the windows. With the Mac, the desktop paradigm is fully realised - so if you want to move something from one place to another, you do it just as you would in the real world, by picking it up and dropping it where you want it. Don't worry about opening the destination first, as the finder will automatically open windows for you.
If you want keyboard shortcuts on the Mac, go into System Preferences and select keyboard, then you can add/change as many as you like. To change the defaults - just double click on the existing one.
You can use smart folders on the Mac which basically perform a live search and update their contents automatically - this allows you to make a folder which contains any combination of files/folders/apps for any amount of time.
Also, as pointed out by others here, Shift select is the same as Windows and if you do Cmd select, you can select the first two files, miss out the next one then select three more etc.
Hope this helps, my advice is make the jump, you will not regret it.
If you want keyboard shortcuts on the Mac, go into System Preferences and select keyboard, then you can add/change as many as you like. To change the defaults - just double click on the existing one.
You can use smart folders on the Mac which basically perform a live search and update their contents automatically - this allows you to make a folder which contains any combination of files/folders/apps for any amount of time.
Also, as pointed out by others here, Shift select is the same as Windows and if you do Cmd select, you can select the first two files, miss out the next one then select three more etc.
Hope this helps, my advice is make the jump, you will not regret it.
srf4real
Sep 12, 08:55 PM
thanx for posting the picture. i couldn't find it. I'm getting one and hope 811g from 15 feet is sufficient!
[edit] and another thing, I don't thing my mini connects to my tv??
[edit] and another thing, I don't thing my mini connects to my tv??
wovel
Apr 28, 09:03 AM
Make up your mind what you want to count iPads as. Damn is it a mobile device a computer. Someone give them a ****ing category already.
It can count as a computer, net books do..
It can count as a computer, net books do..
dodge this
Apr 12, 10:32 PM
Any word on Motion? I use it alot.
lipinski77
Sep 20, 01:36 PM
The iTV makes the elgato eyetv hybrid even more appealing. :)
http://www.elgato.com/index.php?file=products_eyetvhybridna
Use it to record your shows and then stream it to the iTV.
-bye bye comcast DVR.
what about calling it the iStream (ha)
http://www.elgato.com/index.php?file=products_eyetvhybridna
Use it to record your shows and then stream it to the iTV.
-bye bye comcast DVR.
what about calling it the iStream (ha)
AndroidfoLife
Apr 20, 11:49 PM
Apple didn't skew any numbers. Apple didn't provide these numbers. They had nothing to do with it.
That said, how are the numbers skewed? When counting OS market share do you treat 13" notebooks differently than desktops? Or do you add everything up?
That said, how are the numbers skewed? When counting OS market share do you treat 13" notebooks differently than desktops? Or do you add everything up?
100Teraflops
Apr 5, 06:03 PM
Actually, I do think this would bug me. I love that I have all of my most used programs (Word, Excel, Photoshop, Lightroom, Notepad, etc, plus one particular folder) right there for easy access with 1 click of the Start button -- yet hidden away completely out of sight (until I click on Start). I also love having quick access to my "Recent Items" list, to quickly open a file I was recently working on.
How are the above 2 things done on a Mac?
eek... I use "alt-tab" and "copy & paste" A LOT! :eek:
Doesn't Mac have these things too? :confused:
Recent items are "today, yesterday, and past week." I checked with the 'finder' and a document showed up yesterday without accessing my documents folder. Hope this helps, as you sound computer savvy!
How are the above 2 things done on a Mac?
eek... I use "alt-tab" and "copy & paste" A LOT! :eek:
Doesn't Mac have these things too? :confused:
Recent items are "today, yesterday, and past week." I checked with the 'finder' and a document showed up yesterday without accessing my documents folder. Hope this helps, as you sound computer savvy!
Senbei
Jul 13, 09:54 AM
I don't get the bubble that many Apple fans seem to live in, where Apple can short-change you with crippled hardware at premium prices (which they have done) and get away with it.
Some of us don't live in a bubble and do understand that we pay a premium for the entire Mac experience (combination of hardware and software design as opposed to flat raw speed). That experience isn't 100% perfect but what else in life is?
As far as the clearly delineated and simplified product stratification, many are still bound by muscle memory :D ever since Jobs collapsed Apple's once dizzying hardware line into that simple 4-grid matrix of consumer and professional (with the exception of the Cube in the past, Xserve, and the "entry level" mini).
For me, I hope Apple breaks out of this annoying (and limiting) matrix once all of the Core 2 family are out on the table and offers maybe just a few more form factor choices (taking advantage of each processors TDP envelope in the design) as opposed to the current stratification based primarily around the prevention of product cannibilization via an imaginary consumer versus professional distinction. The good thing is we'll know Apple's plans real soon.
Some of us don't live in a bubble and do understand that we pay a premium for the entire Mac experience (combination of hardware and software design as opposed to flat raw speed). That experience isn't 100% perfect but what else in life is?
As far as the clearly delineated and simplified product stratification, many are still bound by muscle memory :D ever since Jobs collapsed Apple's once dizzying hardware line into that simple 4-grid matrix of consumer and professional (with the exception of the Cube in the past, Xserve, and the "entry level" mini).
For me, I hope Apple breaks out of this annoying (and limiting) matrix once all of the Core 2 family are out on the table and offers maybe just a few more form factor choices (taking advantage of each processors TDP envelope in the design) as opposed to the current stratification based primarily around the prevention of product cannibilization via an imaginary consumer versus professional distinction. The good thing is we'll know Apple's plans real soon.
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