ergle2
Sep 10, 01:41 AM
Please explain - I have no idea what "that" is....
---
Regardless of the tool, however, it is usually much better to let the OS dynamically schedule threads across the cores. Unless the programmer has some reason to try to control this, the alternative is some resources (CPUs) being overcommitted, while other CPUs are idle.
It doesn't matter who has the better tools - it's usually better to let the OS decide microsecond by microsecond how best to schedule the CPUs, than to have the developer make those decisions at edit time.
I've used the SetProcessAffinityMask APIs fairly often, but it's always been for specific test or benchmark situations. I have a hard time thinking of a situation where a general application would want to statically control the scheduler - it's just "bad think" to even try. (Except for those weird-a$$ NUMA Opterons - you can be really scr3wed if you have to go through HyperTransport to get to memory. I check NUMA topology, and use affinity to keep the AMD architecture from killing me.)
I've owned SMP machines in the past and often found it more useful to force CPU affinity of CPU-heavy tasks to a single processor, as Windows 2000 (which was current at the time) by default had a habit of swapping it between chips, resulting in a lot of cache-dirtying. I think it was the load balancing code, but it's been a while now and I don't have those machines handy currently. However, you could see some significant improvement in processing time on some non-parallelizable cpu-bound tasks.
I've no idea if MacOS does this, but at least in the case of Core 2 it shouldn't matter anywhere near as much, as the L2 is fully shared.
---
Regardless of the tool, however, it is usually much better to let the OS dynamically schedule threads across the cores. Unless the programmer has some reason to try to control this, the alternative is some resources (CPUs) being overcommitted, while other CPUs are idle.
It doesn't matter who has the better tools - it's usually better to let the OS decide microsecond by microsecond how best to schedule the CPUs, than to have the developer make those decisions at edit time.
I've used the SetProcessAffinityMask APIs fairly often, but it's always been for specific test or benchmark situations. I have a hard time thinking of a situation where a general application would want to statically control the scheduler - it's just "bad think" to even try. (Except for those weird-a$$ NUMA Opterons - you can be really scr3wed if you have to go through HyperTransport to get to memory. I check NUMA topology, and use affinity to keep the AMD architecture from killing me.)
I've owned SMP machines in the past and often found it more useful to force CPU affinity of CPU-heavy tasks to a single processor, as Windows 2000 (which was current at the time) by default had a habit of swapping it between chips, resulting in a lot of cache-dirtying. I think it was the load balancing code, but it's been a while now and I don't have those machines handy currently. However, you could see some significant improvement in processing time on some non-parallelizable cpu-bound tasks.
I've no idea if MacOS does this, but at least in the case of Core 2 it shouldn't matter anywhere near as much, as the L2 is fully shared.
levitynyc
Sep 9, 11:20 AM
No one who needs powerful graphics could go for anything except maybe the 24". The x1600 is pretty low-end for a mid-range desktop by now, and the nvidea 7600 is not bad but certainly not a powerhouse. And why would you say that the imacs are more "impressive, solid, and reliable" than the mac pros? Better values, maybe, but more impressive, solid, and reliable? :confused:
AMEN
Do you realize the Dell XPS 700 is capable of running 2 Nvidea GeForce - 1GB 7950 GX2 Quad SLI card for a total of 2 GB of Video
The fact that the new 24" Imac is only capable of handling a 256MB Video card is an embarassment as far as I am concered.
AMEN
Do you realize the Dell XPS 700 is capable of running 2 Nvidea GeForce - 1GB 7950 GX2 Quad SLI card for a total of 2 GB of Video
The fact that the new 24" Imac is only capable of handling a 256MB Video card is an embarassment as far as I am concered.
technicolor
Sep 12, 03:35 PM
Either the video playback code was improved to be less power hungry (maybe it uses less CPU, maybe it doesn't need to spin the disk as much), or an improved video chip was put in which uses less power.
Thanks for that explanation.
Thanks for that explanation.
brian636
Mar 17, 07:16 PM
Of course McAfee would say that, they want to sell software.
woodman
Sep 1, 11:43 AM
So are the MacBooks going to get Merom or not? I'm going to buy a black one, but am waiting to see.
craigsharp@spym
Sep 14, 08:54 AM
iPhone.org is a hoax, i think. I'm not sure, but it is kinda funny that Apple owns mammals.org? why in the heck does apple own that domain name? Kinda lookin forward to seeing the the all new Apple Mammal, It's a robot that looks and feels human, can think and even reproduces the same way a human does. LOL Oh and it can play the new movies too.
wizard
Sep 9, 10:48 AM
I think far to many persons here are dismissing Merom and are not thinking about this rationally. They are getting a 20% boost at the SAME clock speed as the old chips. That is similar to 400 MHz additional performance. Granted one can not scale the MHz without other issues coming into play but still it gives you an idea about how well the chips are doing. On top of that the 64 bit option isn't likely to even be in the picture at the moment nor the other chip improvements.
What I'm getting at is that Merom is demonstrating to be a significant step forward. The real surprise is that Intel actually delivered a nice chip set.
As to the laptop chip in the iMac come on everyone here knows about the thermal issues in that machine. It is no surprise at all. What it does demonstrate clearly is that multiprocessing can deliver very usable performance at very low powers. A number of people where dismissing multiprocessing as the wave of the future a couple of years ago (I remember because I was promoting it) this should cool off those concerns for the majority of the users out there. I'm with you on power usage more manufactures need to look at this issue seriously.
The thing with Merom is that I'm seeing big upside potential performance wise. I'm surprised that more people are not up on this. Intel can accomplish this by tweaking the current process or going to the next generation feature size. Merom is nice but it still needs more effort at power reduction to scale speed.
Thanks
Dave
I think we all knew that Merom would only bring modest performance gains. I'm surprised they're as high as they are. I'm still not sure why they're using the laptop line of processors in their mid range desktop but it's certainly a testament to the power of Intel's new chips. If it keeps the iMac's cool and efficient then it's all good.
What I'm getting at is that Merom is demonstrating to be a significant step forward. The real surprise is that Intel actually delivered a nice chip set.
As to the laptop chip in the iMac come on everyone here knows about the thermal issues in that machine. It is no surprise at all. What it does demonstrate clearly is that multiprocessing can deliver very usable performance at very low powers. A number of people where dismissing multiprocessing as the wave of the future a couple of years ago (I remember because I was promoting it) this should cool off those concerns for the majority of the users out there. I'm with you on power usage more manufactures need to look at this issue seriously.
The thing with Merom is that I'm seeing big upside potential performance wise. I'm surprised that more people are not up on this. Intel can accomplish this by tweaking the current process or going to the next generation feature size. Merom is nice but it still needs more effort at power reduction to scale speed.
Thanks
Dave
I think we all knew that Merom would only bring modest performance gains. I'm surprised they're as high as they are. I'm still not sure why they're using the laptop line of processors in their mid range desktop but it's certainly a testament to the power of Intel's new chips. If it keeps the iMac's cool and efficient then it's all good.
ezekielrage_99
Aug 29, 06:51 AM
I'm pretty sure the guy doesn't deserve to be shot down.
It seems to me that by "MB" he did not bean "MacBook" as is the most common use of these two letters, but "Mother Board" which makes perfect sense, covers all Yonah macs and is perfectly true. Disregarding the soldering issue of the 'books, which is a different point.
I'm a convert from the PC mob and whenever I see MB I automatically think of "Main Board" as well.
It seems to me that by "MB" he did not bean "MacBook" as is the most common use of these two letters, but "Mother Board" which makes perfect sense, covers all Yonah macs and is perfectly true. Disregarding the soldering issue of the 'books, which is a different point.
I'm a convert from the PC mob and whenever I see MB I automatically think of "Main Board" as well.
ScubaDuc
Sep 14, 08:55 AM
New version of Aperture!.. Saweeet
or more likely a new Apple iSLR
16 Megapixels
full frame sensor
Adaptive lens mount supports all Canon and Nikon Lenses
60gb removeable 1.8" hard drive
3" OLED screen
Anti-Dust
Anti-shake
Shoots in a new Apple RAW format
eye tracking for focus
Spot metering
1/8000 shutter with 150,000 shutter life
Full weather sealing
Magnesium body
6fps (up to 25 raw frames)
Depth of Field Preview
Pop up flash
802.11 Wifi
GPS built in
Optional Battery Grip
Scrollwheel navigation for menu system
Apple iScreen Digital Image processor
64 Segment Metering and Spot Metering
Supports Compact Flash
Ohhh, Please let it be watertight to at least 100ft/30 meters while we are at it..:rolleyes:
or more likely a new Apple iSLR
16 Megapixels
full frame sensor
Adaptive lens mount supports all Canon and Nikon Lenses
60gb removeable 1.8" hard drive
3" OLED screen
Anti-Dust
Anti-shake
Shoots in a new Apple RAW format
eye tracking for focus
Spot metering
1/8000 shutter with 150,000 shutter life
Full weather sealing
Magnesium body
6fps (up to 25 raw frames)
Depth of Field Preview
Pop up flash
802.11 Wifi
GPS built in
Optional Battery Grip
Scrollwheel navigation for menu system
Apple iScreen Digital Image processor
64 Segment Metering and Spot Metering
Supports Compact Flash
Ohhh, Please let it be watertight to at least 100ft/30 meters while we are at it..:rolleyes:
striker33
Apr 25, 02:12 PM
Ahhh just as I bought a new MBP!!!!! Hopefully resale value won't take too big of a hit :(
13"ers generally lose 15-20% value after a year, so should be fine.
13"ers generally lose 15-20% value after a year, so should be fine.
dakwar
Apr 19, 10:54 AM
Apple should just buy out Samsung!
Simplistic, I know.
Simplistic, I know.
spicyapple
Sep 19, 01:41 PM
I have an idea:
Sell Pirates of the Caribbean: Dead Man's Chest in a High Definition format to test the waters. I think a lot of people would buy it in HD since they already have computers capable of decoding it. Why the need to invest in an expensive HD DVD player?
Sell Pirates of the Caribbean: Dead Man's Chest in a High Definition format to test the waters. I think a lot of people would buy it in HD since they already have computers capable of decoding it. Why the need to invest in an expensive HD DVD player?
dime21
Apr 14, 12:33 PM
Of course they're complementary. USB for the mouses, joysticks, and dancing desk toys. Thunderbolt for real I/O like hard drives and RAID. Same as how it's always been, only now we'll have Thunderbolt slowly replacing Firewire.
All my external devices are Firewire today: multiple hard drives, DVD burner, video camera, flat bed scanner, card reader, and audio mixer. The only USB devices I have is my mouse. I suppose I'll slowly migrate to Thunderbolt as I upgrade, but Intel's new USB announcement won't change any of this. Maybe my mouse will work faster? lol.
All my external devices are Firewire today: multiple hard drives, DVD burner, video camera, flat bed scanner, card reader, and audio mixer. The only USB devices I have is my mouse. I suppose I'll slowly migrate to Thunderbolt as I upgrade, but Intel's new USB announcement won't change any of this. Maybe my mouse will work faster? lol.
QCassidy352
Jul 14, 09:28 AM
wait, now conroe is "widely expected" in the powermacs? I thought woodcrest was... I still think it will be:
mac pro - woodcrest
xserve - woodcrest
imac - conroe
macbook pro - merom
macbook - merom (but months later)
mini - merom (but months later)
We shall know soon! :)
mac pro - woodcrest
xserve - woodcrest
imac - conroe
macbook pro - merom
macbook - merom (but months later)
mini - merom (but months later)
We shall know soon! :)
xUKHCx
Sep 9, 05:17 AM
You're correct. As soon as the new iMacs were released, they were immediately excluded from the free iPod offer. If anyone is hoping that MBP's or MB's are updated to C2D before the 16th so they can get the free iPod from that promotion, it won't happen. If you want the free iPod, you'd better order a MB or MBP before/if they update those systems to C2D. It sucks because I was hoping to take advantage of that promotion when/if the updates happened before the 16th.
Not true at least in the Uk, taken from the t & c's
Mac Product � any one of the following:
(i) iMac 20-inch 2GHz Intel Core Duo, iMac 17-inch 2GHz Intel Core
2 Duo, iMac 20-inch 2.16GHz Intel Core 2 Duo, iMac 20-inch
2.33GHz Intel Core 2 Duo, iMac 24-inch 2.16GHz Intel Core 2 Duo,
iMac 24-inch 2.33GHz Intel Core 2 Duo;
Not true at least in the Uk, taken from the t & c's
Mac Product � any one of the following:
(i) iMac 20-inch 2GHz Intel Core Duo, iMac 17-inch 2GHz Intel Core
2 Duo, iMac 20-inch 2.16GHz Intel Core 2 Duo, iMac 20-inch
2.33GHz Intel Core 2 Duo, iMac 24-inch 2.16GHz Intel Core 2 Duo,
iMac 24-inch 2.33GHz Intel Core 2 Duo;
Vegasman
Apr 19, 08:58 AM
I agree. Sometimes I think this kind of lawsuits are a stretch and a bit silly, but not this time. When there's confusion even to me as a geek after a quick glance on these smarthpones, I have to agree that it's gone too far.
For me all phone look relatively the same at a glace so I always look at the buttons first.
1 button - Apple
4 buttons - Android
3 button - Windows Phone
Then I look for a logo to differentiate further.
For me all phone look relatively the same at a glace so I always look at the buttons first.
1 button - Apple
4 buttons - Android
3 button - Windows Phone
Then I look for a logo to differentiate further.
~Shard~
Sep 10, 03:11 PM
Dare I dream? How about a quad processor quad core system! 16 cores in all!!!
That's nothing. Just wait for Dunnington or Harpertown. :cool:
That's nothing. Just wait for Dunnington or Harpertown. :cool:
holycat
Sep 14, 08:21 AM
New version of Aperture!.. Saweeet
or more likely a new Apple iSLR
16 Megapixels
full frame sensor
Adaptive lens mount supports all Canon and Nikon Lenses
60gb removeable 1.8" hard drive
3" OLED screen
Anti-Dust
Anti-shake
Shoots in a new Apple RAW format
eye tracking for focus
Spot metering
1/8000 shutter with 150,000 shutter life
Full weather sealing
Magnesium body
6fps (up to 25 raw frames)
Depth of Field Preview
Pop up flash
802.11 Wifi
GPS built in
Optional Battery Grip
Scrollwheel navigation for menu system
Apple iScreen Digital Image processor
64 Segment Metering and Spot Metering
Supports Compact Flash
if this is the case...i would rob the bank...to buy that new iCamera!:D :D :D :D :D :D
or more likely a new Apple iSLR
16 Megapixels
full frame sensor
Adaptive lens mount supports all Canon and Nikon Lenses
60gb removeable 1.8" hard drive
3" OLED screen
Anti-Dust
Anti-shake
Shoots in a new Apple RAW format
eye tracking for focus
Spot metering
1/8000 shutter with 150,000 shutter life
Full weather sealing
Magnesium body
6fps (up to 25 raw frames)
Depth of Field Preview
Pop up flash
802.11 Wifi
GPS built in
Optional Battery Grip
Scrollwheel navigation for menu system
Apple iScreen Digital Image processor
64 Segment Metering and Spot Metering
Supports Compact Flash
if this is the case...i would rob the bank...to buy that new iCamera!:D :D :D :D :D :D
mrsir2009
Apr 25, 03:01 PM
I wonder if they'll go SSD and maintain the price-point by saying bye-bye to the superdrive? I hope so, i'd prefer SSD speed over a disc drive which i hardly use anymore.
Also, i'm thinking the black bezel might go. In my opinion, the black hinge doesn't look too good when the rest is metal.
Bigger trackpad, for Lion's gestures?
I hope they don't go sloped, like the air. But then again, when it comes to design, Apple always make it sexy, so i don't mind really.
Can't wait anyway, i was recently thinking of buying a MacBook Pro, glad i didn't jump in too soon :)
Sorry, but the cost of an 80GB SSD is about $500 NZD, while an optical drive costs $30 NZD. Don't think it'll quite cover the cost ;) Oh, and if you want something like a 500GB+ SSD your looking at $1000+
Also, i'm thinking the black bezel might go. In my opinion, the black hinge doesn't look too good when the rest is metal.
Bigger trackpad, for Lion's gestures?
I hope they don't go sloped, like the air. But then again, when it comes to design, Apple always make it sexy, so i don't mind really.
Can't wait anyway, i was recently thinking of buying a MacBook Pro, glad i didn't jump in too soon :)
Sorry, but the cost of an 80GB SSD is about $500 NZD, while an optical drive costs $30 NZD. Don't think it'll quite cover the cost ;) Oh, and if you want something like a 500GB+ SSD your looking at $1000+
vouder17
Sep 15, 05:31 PM
I don't really see this happening, if apple is going to take the risk of entering this competitive market, I see them doing it with a very innovative 'new' product.
SuperCachetes
Dec 31, 05:16 AM
Obviously McAfee has a vested interest is spewing "fear FUD" such as this. :rolleyes:
Last month I finally ditched that buggy junk from my Win7 installs. Got tired of having to reinstall it all the time. The auto-renewal scheme was an annoying little booby-trap as well. Good riddance.
Last month I finally ditched that buggy junk from my Win7 installs. Got tired of having to reinstall it all the time. The auto-renewal scheme was an annoying little booby-trap as well. Good riddance.
CrackedButter
Sep 19, 05:29 PM
My point is...
1) The Movies take up huge amounts of storage space.
2) I hate having to always plug external drives into my iBook.
3) We need redundancy for storing these movies we buy. An "external HD" just won't cut it.
4) If I want to take my iBook on the road with me, then how are the other people in my house going to access the Movies and other media via iTV if it's stored on my iBook or some "external HD" which requires a host computer to be of any use.
1) Thanks for reminding me, i forgot that fact.
2) But you'll happily have a RAID array and plug THAT into your iBook?
3) Yeah you said, a RAID array... a sort of external HD, but in an array.
4) If you take your iBook on the road with you, then how are the other people in your house going to access the movies and other media via iTV if its stored on your "RAID array" which requires a host computer to be of any use?
You have high expectations for Apple then? Its going to be some RAID array!
1) The Movies take up huge amounts of storage space.
2) I hate having to always plug external drives into my iBook.
3) We need redundancy for storing these movies we buy. An "external HD" just won't cut it.
4) If I want to take my iBook on the road with me, then how are the other people in my house going to access the Movies and other media via iTV if it's stored on my iBook or some "external HD" which requires a host computer to be of any use.
1) Thanks for reminding me, i forgot that fact.
2) But you'll happily have a RAID array and plug THAT into your iBook?
3) Yeah you said, a RAID array... a sort of external HD, but in an array.
4) If you take your iBook on the road with you, then how are the other people in your house going to access the movies and other media via iTV if its stored on your "RAID array" which requires a host computer to be of any use?
You have high expectations for Apple then? Its going to be some RAID array!
rmhop81
Apr 22, 09:54 AM
Key things said in your statement. First, believe it or not, people do spend a lot of time out, people have lives. I'm not saying you don't necessarily but, not everyone sits at home. When the time comes when its obvious physical media is actually dead, internet connectivity sure will be more reliable at that point. Its hard to say what data charges and such will be like at that point. Also, not everyone has or is able to get unlimited data so quit acting basing your arguments on that people do. Also, I'm assuming you have AT&T. In case you didn't know AT&T is already sending out messages to people with abnormally high data usage...even to people on unlimited plans saying stop it or we will change your plan to one our current higher end plans....i.e. 4GB. So until, cellular data is stable, reliable and the carriers do NOT want to gouge the customer on data....I want my local storage. One more point, physical media is one thing and local storage in terms of what we're discussing is not exactly the same thing. You're talking about CDs, blu rays and such. I'm talking about digital storage of .mp3/.aac/.mp4 and such. Not exactly the same.
hence why i have unlimited data....when i am on the go i am not limited. do you know how much data it takes to stream something like pandora? not a lot. you are all acting like ur going to be hitting 50gb data usage by streaming something. I don't have abnormally high data usage at all. It's actually less most months than 2gb's but it's not worth it to me to give up unlimited data to save $5/month.
You still don't get it. Look at where the future is going. Look at the storage on iPads, MBA's etc. There is not a need for massive local storage like there was in the past. Heck i have a 64gb MBA and have over 40gb's free bc nothing is locally stored. I can access everything at anytime from any device. Local storage is not necessary and just makes things more difficult when wanting to get music on multiple devices. Physical media is slowly going away bc it's old technology and there are better ways to do things. Local storage is the same thing man.
hence why i have unlimited data....when i am on the go i am not limited. do you know how much data it takes to stream something like pandora? not a lot. you are all acting like ur going to be hitting 50gb data usage by streaming something. I don't have abnormally high data usage at all. It's actually less most months than 2gb's but it's not worth it to me to give up unlimited data to save $5/month.
You still don't get it. Look at where the future is going. Look at the storage on iPads, MBA's etc. There is not a need for massive local storage like there was in the past. Heck i have a 64gb MBA and have over 40gb's free bc nothing is locally stored. I can access everything at anytime from any device. Local storage is not necessary and just makes things more difficult when wanting to get music on multiple devices. Physical media is slowly going away bc it's old technology and there are better ways to do things. Local storage is the same thing man.
jmille44
Apr 22, 07:36 PM
I have an original mac portable sitting next to my 11". Laptop design has only downsized from this original beast and gotten faster.
I am not impressed yet. Incremental updates, nothing major or breakthrough.
That's just how it will always be. I'll hold onto this 11" for 8 years and guess what. It's replacement will be just an 11" roll out touch screen computer.
That is where this is going in 8 years and I am still not impressed.
I am not impressed yet. Incremental updates, nothing major or breakthrough.
That's just how it will always be. I'll hold onto this 11" for 8 years and guess what. It's replacement will be just an 11" roll out touch screen computer.
That is where this is going in 8 years and I am still not impressed.