gnasher729
Sep 11, 07:42 AM
No, not at all.
An affinity mask sets the set of CPUs that can be scheduled. A job won't be run on another CPU, even if the assigned CPUs are at 100% and other idle CPUs are available.
And that, by the way, is why setting affinity is usually a bad idea. Let the system dynamically schedule across all available resources -- or you might have some CPUs very busy, and others idle.
Win2k3 also has "soft" affinity masks, which define a preferred set of CPUs. If all of the preferred CPUs are busy, and other CPUs are idle, then soft affinity allows the system to run the jobs on the idle CPUs - even though the idle CPUs aren't in the preferred affinity mask.
Another aspect of quad core systems like MacPro or future Kentfields: On these systems, two cores share one 4 MB cache. If an application runs on two threads, it can run on two cores on the same chip, or on two cores on different chips. Threads that run on the same chip can exchange data very quickly, because anything that is in one threads L2 cache is automatically in the other threads L2 cache, but both threads together have only 4 MB cache. Threads running on different chips cannot exchange data quickly; data that is exchanged needs to be transferred through main memory. However, _each_ chip has 4 MB cache, or 8 MB total.
In other words, some applications will run faster if using threads on the same chip, some will run faster if using threads on separate chip. It is quite hard for the OS to guess, but the application developer should have some idea.
An affinity mask sets the set of CPUs that can be scheduled. A job won't be run on another CPU, even if the assigned CPUs are at 100% and other idle CPUs are available.
And that, by the way, is why setting affinity is usually a bad idea. Let the system dynamically schedule across all available resources -- or you might have some CPUs very busy, and others idle.
Win2k3 also has "soft" affinity masks, which define a preferred set of CPUs. If all of the preferred CPUs are busy, and other CPUs are idle, then soft affinity allows the system to run the jobs on the idle CPUs - even though the idle CPUs aren't in the preferred affinity mask.
Another aspect of quad core systems like MacPro or future Kentfields: On these systems, two cores share one 4 MB cache. If an application runs on two threads, it can run on two cores on the same chip, or on two cores on different chips. Threads that run on the same chip can exchange data very quickly, because anything that is in one threads L2 cache is automatically in the other threads L2 cache, but both threads together have only 4 MB cache. Threads running on different chips cannot exchange data quickly; data that is exchanged needs to be transferred through main memory. However, _each_ chip has 4 MB cache, or 8 MB total.
In other words, some applications will run faster if using threads on the same chip, some will run faster if using threads on separate chip. It is quite hard for the OS to guess, but the application developer should have some idea.
Half Glass
Aug 28, 09:28 PM
Sorry to crash the party, but it would seem a little strange for Apple to upgrade the MacBook and/or MB Pro's until sometime after the 16th when their current college promotion ends. Promotion = clearing out old stock (of notebooks & iPods).
Keep your mom's credit card in her purse for a few more weeks.
This logic is flawed because just as they did with the MacPro, they will add the new laptops to the iPod promotion if they are released.
The ongoing promotion is no reason to delay such an upgrade. As others have stated, the promotion is an effort to clear inventory for the next model.
--HG
Keep your mom's credit card in her purse for a few more weeks.
This logic is flawed because just as they did with the MacPro, they will add the new laptops to the iPod promotion if they are released.
The ongoing promotion is no reason to delay such an upgrade. As others have stated, the promotion is an effort to clear inventory for the next model.
--HG
ArchaicRevival
Apr 30, 01:59 PM
Curious that everyone is clamoring for a thunderbolt-enabled machine, but there isn't a single thunderbolt drive available on the market.
I guess some people just need to feel like they have new stuff even if it's totally pointless.
Everybody said that to Nikola Tesla when he introduced the AC... It's new, and we have to redesign everything now, and Edison is gonna lose all his investments oh my god! We can't do that!
A century later...
I guess some people just need to feel like they have new stuff even if it's totally pointless.
Everybody said that to Nikola Tesla when he introduced the AC... It's new, and we have to redesign everything now, and Edison is gonna lose all his investments oh my god! We can't do that!
A century later...
AppleScruff1
May 1, 12:42 AM
Wouldn't a more relevant comparison be Apple and HP since they are both hardware companies and MS really isn't in the same category hardware wise?
Eidorian
May 3, 12:07 PM
:confused:I understand that Eyefinity offers a single display per connector. The best example being the 5/6 Mini DisplayPort video cards on the market.
What I have not seen are daisy chaining multiple displays from a single DisplayPort connector (via proper cabling) or from a passthrough based on a display to an additional monitor.
What I have not seen are daisy chaining multiple displays from a single DisplayPort connector (via proper cabling) or from a passthrough based on a display to an additional monitor.
aurichie
Apr 22, 05:44 AM
Useless to me if it is just for iTunes purchases. Please focus on more important things, Apple.
Given iTunes is the world's biggest music store, I think their new service will be quite useful to a lot of people. It's not difficult to imagine the kinds of people who would benefit from having their iTunes purchases backed up to the cloud automatically.
I just hope Steve Jobs doesn't wake up this morning and realise his new idea is useless to caspersoong and kill the project. :(
Given iTunes is the world's biggest music store, I think their new service will be quite useful to a lot of people. It's not difficult to imagine the kinds of people who would benefit from having their iTunes purchases backed up to the cloud automatically.
I just hope Steve Jobs doesn't wake up this morning and realise his new idea is useless to caspersoong and kill the project. :(
LarryC
Apr 22, 03:03 PM
Err... and how is that relevant? I'm sure Blu-Ray will live on in other notebooks, but Apple's? Unlikely.
There were 100GB BDXL when Apple refreshed the MacBook Pro's this year.
Maybe when Steve Jobs is gone for good then Apple can finally have Blu-Ray and a laptop with a right-click mouse.
There were 100GB BDXL when Apple refreshed the MacBook Pro's this year.
Maybe when Steve Jobs is gone for good then Apple can finally have Blu-Ray and a laptop with a right-click mouse.
shawnce
Aug 31, 05:19 PM
I don't know.
Is he?
I thought he was Italian... :eek:
Ya may want to check on world events every now and then :p
Cardinal Joseph Ratzinger, Pope Benedict XVI (http://www.vatican.va/holy_father/benedict_xvi/biography/documents/hf_ben-xvi_bio_20050419_short-biography_en.html)
Is he?
I thought he was Italian... :eek:
Ya may want to check on world events every now and then :p
Cardinal Joseph Ratzinger, Pope Benedict XVI (http://www.vatican.va/holy_father/benedict_xvi/biography/documents/hf_ben-xvi_bio_20050419_short-biography_en.html)
silentnite
Apr 25, 01:59 PM
It's about time to change it up a bit. Only hoping they get better from here, not all change is good ask iphoto 11 users. Getting a new design right can be a bit tricky.
Multimedia
Sep 12, 07:02 PM
just before i jump between covers.... a rip from handbrake in 100% quality i had from before, DV Pal footage, 720p and 1080i footage all opened in quicktime and just gone to export for iPod all worked fine.
wallpaper g power m5 hurricane
Wallpaper 2012 of Gallery 08
Wallpaper 2012 of Gallery 02
BMW M5 Concept Wallpapers 2011
BMW M5 Concept Wallpapers 2011
2011 G-Power BMW M5 Hurricane
2011 G-Power BMW M5 Hurricane
2011 Bertone Jaguar B99 GT
BMW M5 Concept 2004 Cars
manu chao
Sep 10, 05:21 PM
This is my expectation. I am one customer who needs 8 cores for sure. I also expect to need 16 when they become available. Clovertown is not expected to be any longer than Kentsfield.
If you need 16 cores, shouldn't you get a rack with four Xserves (once the new Xserves with Intel-processors become available)?
Sure, getting the same in one (quiet) box for the price of one box would be preferable but this is not available yet.
Or, do you mean you want 16 cores but right now you are not willing to spent what it takes to get it.
(Sorry for the tone, I would like to have 16 cores for my work as well.)
If you need 16 cores, shouldn't you get a rack with four Xserves (once the new Xserves with Intel-processors become available)?
Sure, getting the same in one (quiet) box for the price of one box would be preferable but this is not available yet.
Or, do you mean you want 16 cores but right now you are not willing to spent what it takes to get it.
(Sorry for the tone, I would like to have 16 cores for my work as well.)
daneoni
Mar 22, 01:42 PM
As someone looking forward to buying my very first Mac desktop; I must say this is a pretty lame rumour. 'Sandy Bridge'? 'Thunderbolt'? Nothing surprising; everyone here was expecting these two items. I want more specific rumours!:p
The wait continues...:(
The guy across the street who has a friend named Phil Jobs that works for Apple says it'll also be 'truly magical'
The wait continues...:(
The guy across the street who has a friend named Phil Jobs that works for Apple says it'll also be 'truly magical'
fly75
Mar 29, 11:38 AM
So IDC is projecting that Nokia is crowding other WP7 vendors of the market, or it will be losing market share.
rtdunham
Sep 12, 10:21 PM
I do wish I could ultra-boost the audio on-board. Some of the video digitizations I have are too quiet.
i felt the same way as i watched a podcast today. then my brother pointed out "itunes lets you set volume level for each item in itunes: select a song/podcast/whatever. right-click on the selected item and choose "options." set the volume adjustment at a higher level. that will keep the volume for that item higher." He says it was one of many useful tips he found in the Visual Guide to iTunes 6.
i felt the same way as i watched a podcast today. then my brother pointed out "itunes lets you set volume level for each item in itunes: select a song/podcast/whatever. right-click on the selected item and choose "options." set the volume adjustment at a higher level. that will keep the volume for that item higher." He says it was one of many useful tips he found in the Visual Guide to iTunes 6.
4God
Aug 28, 02:41 PM
Unfortunately, cats are known liars.
DOH!!!! 55999
DOH!!!! 55999
MattyMac
Sep 5, 06:02 PM
My nano is already on eBay awaiting a nice metal clad 8GB version, I hope they do an andonised black one though to match my other gadgets.
nice....I'm sure it will be a good time to pick up an older generation on ebay...once they are released that is. This week is the sellers market however.
nice....I'm sure it will be a good time to pick up an older generation on ebay...once they are released that is. This week is the sellers market however.
ezekielrage_99
Sep 10, 08:38 PM
Face it the Conroe Mac is coming.
iMac 24" - $1999
Mac Pro (downgraded to 2.0 Ghz) + 23" - 3198
That is a $1k price gap.
A high quality midtower would fit perfectly. They have another chip to differentiate the product matrix. It is coming!
Mac Mini - Core Duo (yonah) - base entry machine. 2 RAM slots
iMac - Core 2 Duo (Merom) - All in one basic to prosumer models, quiet operation and powerful. 2 RAM Slots
"Mac" - Core 2 Duo (Conroe) - mini tower 1 optical, 2 drives, 2 PCIe, 4 RAM Slots - prosumer to low end workstation.
Mac Pro - Xeon (Woodcrest) - Full tower 2 processors, 8 RAM slots, 4 PCIe, 2 optical, 4 drive bays. - Mid to high end workstation.
Sounds kind of feasible for a single CPU "Mac" Conroe system and it would fit nicely into the Apple product line up. I think a Conroe system would appeal nicely to prosumers and gamers.
iMac 24" - $1999
Mac Pro (downgraded to 2.0 Ghz) + 23" - 3198
That is a $1k price gap.
A high quality midtower would fit perfectly. They have another chip to differentiate the product matrix. It is coming!
Mac Mini - Core Duo (yonah) - base entry machine. 2 RAM slots
iMac - Core 2 Duo (Merom) - All in one basic to prosumer models, quiet operation and powerful. 2 RAM Slots
"Mac" - Core 2 Duo (Conroe) - mini tower 1 optical, 2 drives, 2 PCIe, 4 RAM Slots - prosumer to low end workstation.
Mac Pro - Xeon (Woodcrest) - Full tower 2 processors, 8 RAM slots, 4 PCIe, 2 optical, 4 drive bays. - Mid to high end workstation.
Sounds kind of feasible for a single CPU "Mac" Conroe system and it would fit nicely into the Apple product line up. I think a Conroe system would appeal nicely to prosumers and gamers.
daneoni
Sep 12, 04:30 PM
Educated guess would be "big" iPod sales will slump whilst the Nanos & Shuffles will skyrocket.
ro2nie
Jul 18, 10:48 AM
Any one know when the 45nm architecture processors are going to appear?
I'm gonna wait for those, for OS X 10.5 and iLife 07 to invest in a Mac
I'm gonna wait for those, for OS X 10.5 and iLife 07 to invest in a Mac
blow45
Apr 11, 09:27 AM
Can someone create an os plugin to allow anything displayed on my mac to be streamed to any tv with atv on?
harry20larry
Apr 11, 11:06 AM
Home sharing from your Mac won't do that?
Nope, because I want everybody to play their own libraries to some proper speaker, not internal speakers
Nope, because I want everybody to play their own libraries to some proper speaker, not internal speakers
toddybody
Mar 22, 03:12 PM
Now I can rid myself of my 27" i7 2009 iMac.
Things that I would see/would like to see on the new iMacs:
- Thunderbolt (2 ports would be nice)
- Target DisplayPort Mode with HDMI + HDMI audio in, without needing to fully power up the entire computer (and a toggle that doesn't require an Apple keyboard)
- USB3 (I know Intel isn't natively putting USB3 on their chipsets until Ivy Bridge, but Apple could do the right thing and add this)
- get rid of the internal speakers as an option for more cooling
- at least a Radeon 6850 or GeForce GTX 560 Ti (preferably the nVidia card for CUDA/HW accelerated stuff) with at least 1 (2 please) GB of GDDR5 (I'm still boggled why they even offered a 256MB 6490 on the MacBook Pro)
- easily accessible 2.5" port for an SSD (doubt it)
- i7-2600 at the high end (Apple won't sell the K version, unless they go nuts and allow overclocking)
- a side mounted USB port or 2 would be nice, hell, more USB ports period (6-8) would be nice
- a second Firewire 800 (or 1600 if Apple is feeling frisky) port
- matte screen option (this, like the 2.5" bay, has a snowballs' chance in hell)
- Blu-Ray (see my note on the matte screen)
Wonder if Apple will allow for the full 32GB support that the Sandy Bridge processors can fully take, and the DDR3-1600 speeds, since they are limiting both on the MacBook Pros at the moment.
Ha ha ha ha! GTX 560 ti! Youre a funny guy! Apple always fails on it's GPU choices. :(
Things that I would see/would like to see on the new iMacs:
- Thunderbolt (2 ports would be nice)
- Target DisplayPort Mode with HDMI + HDMI audio in, without needing to fully power up the entire computer (and a toggle that doesn't require an Apple keyboard)
- USB3 (I know Intel isn't natively putting USB3 on their chipsets until Ivy Bridge, but Apple could do the right thing and add this)
- get rid of the internal speakers as an option for more cooling
- at least a Radeon 6850 or GeForce GTX 560 Ti (preferably the nVidia card for CUDA/HW accelerated stuff) with at least 1 (2 please) GB of GDDR5 (I'm still boggled why they even offered a 256MB 6490 on the MacBook Pro)
- easily accessible 2.5" port for an SSD (doubt it)
- i7-2600 at the high end (Apple won't sell the K version, unless they go nuts and allow overclocking)
- a side mounted USB port or 2 would be nice, hell, more USB ports period (6-8) would be nice
- a second Firewire 800 (or 1600 if Apple is feeling frisky) port
- matte screen option (this, like the 2.5" bay, has a snowballs' chance in hell)
- Blu-Ray (see my note on the matte screen)
Wonder if Apple will allow for the full 32GB support that the Sandy Bridge processors can fully take, and the DDR3-1600 speeds, since they are limiting both on the MacBook Pros at the moment.
Ha ha ha ha! GTX 560 ti! Youre a funny guy! Apple always fails on it's GPU choices. :(
spencers
Apr 11, 11:30 AM
AMAZING!!!!!!
I'm very excited to see this come to XBMC. Cannot wait!
I'm very excited to see this come to XBMC. Cannot wait!
HecubusPro
Aug 28, 03:01 PM
Also Im not sure if this has been mentioned, but the "free iPod with a Mac" offer ends sept. 16 according to the Apple Store....not sure if there's any correlation going here...
This has been said many times by many people including myself who are all hoping to cash in on the free ipod offer by the 16th. Maybe if we all collectively think happy thoughts it will happen. Here's to hope! :D
This has been said many times by many people including myself who are all hoping to cash in on the free ipod offer by the 16th. Maybe if we all collectively think happy thoughts it will happen. Here's to hope! :D