IMac :: 7,1 Can't Use OpenCL
Aug 24, 2009
I checked apple's website and went down to the requirements page. turns out, you require a nvidia or a very very recent ati chip to run openCL. the imac that i own has a ati radeon 2600 pro. what i don't get it, how is a nvidia 9400m more powerful than 2600 from ATI there seems to be no other reason than the fact that apple is being lazy about supporting fairly recent hardware. I only got this imac a couple of years a go and its still pretty new. Does apple expect me to get a new mac?
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Jun 4, 2009
I have been reading that Apple worked with nvidia on OpenCL and that leaves me wondering: will ATI see all the same GPU acceleration of nVidia?
I am looking to buy an iMac in the next few months, and am stuck deciding between the lesser nVidia 130 that can use open CL or the fast ATi that may not...
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Sep 4, 2009
I'm thinking of getting Snow Leopard and want to see if i can take advantage of it's features...specifically OpenCL
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Jun 8, 2009
Look at [URL] there are some specs about snow leopard and OpenCL (supported video cards)
- NVIDIA Geforce 8600M GT, GeForce 8800 GT, GeForce 8800 GTS, Geforce 9400M, GeForce 9600M GT, GeForce GT 120, GeForce GT 130.
- ATI Radeon 4850, Radeon 4870
Is my GF 8800 GS not supported?
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Oct 21, 2009
In the tech specs for Mac OS X 10.6 Snow Leopard it only lists the ATI Radeon 4850 and 4870 for supported graphics cards for OpenCL so does this new 4670 support OpenCL? I think it would be pretty silly to have the cheaper iMac with the GeForce 9400M support it but not the next step up with a dedicated card.
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Dec 16, 2008
The broad industry support Apple is building around OpenCL will help increase the critical mass behind OpenGL, the 2D and 3D graphics language Apple uses extensively in Mac OS X. Since the mid 90s, Microsoft has worked to prevent the adoption of OpenGL as an interoperable industry standard in favor of its own proprietary DirectX portfolio of graphics software and gaming tools.
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Aug 15, 2009
Don't get me wrong, the (apple-shipped) 8800GT has never given me a moment's worth of problem but it would seem that if there is OpenCL support for the GTX285 in SL next month, it may be worth it to drop the coin and get this card (I'll take it as a business expense).
Has anyone heard or seen something about officially supporting this card? When I looked on Apple's website under SL tech specs, this card isn't listed.
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Aug 30, 2009
I have a question about how OpenCL works. What programs can utilize the GPU for processing? Does it happen automatically, or does the programming within the application have to state that the GPU can be used? It seems like everyone is excited about OpenCL and GPU acceleration, but how often is it used?
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Jun 8, 2009
1) from wwdc latest information, Mac pro user will have only 3 Apple official option OpenCL that is : GeForce 8800 GT, GeForce GT 120 and Radeon 4870
2) but I think GTX285 and FX4800 will support too. (At least final ver. of Snow leopard)
3) Assume you want many core the best selection from 1) & 2) is ATI Radeon 4870 because it has 800 stream processor. GTX 285 have 240
4) Assume you want memory speed the best selection from 1) & 2) is ATI Radeon 4870 again because it GDDR5 (but i can't confidentally confirm it when 4870 have lower memory speed and lower memory bandwidth)
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Aug 29, 2009
09 Quad Mac Pro, with flashed 1g XFX 4870 ...
all the OpenCL sample apps from Apple, except for the "hello world" example, are failing.
Can anyone else confirm the same errors on their setup? Just so that I know for sure it is due to the 4870.
I will try putting in my GT120 and see what happens.
Code:
Last login: Sat Aug 29 16:35:11 on ttys002
/Users/mani/Downloads/OpenCL_RayTraced_Quaternion_Julia-Set_Example/build/Debug/qjulia ; exit;
Galactus:~ mani$ /Users/mani/Downloads/OpenCL_RayTraced_Quaternion_Julia-Set_Example/build/Debug/qjulia ; exit;
Creating Texture 512 x 512...
----------------------------------------------------------------------
Using active OpenGL context...
----------------------------------------------------------------------
Connecting to AMD Radeon HD 4870...
----------------------------------------------------------------------
Loading kernel source from file 'qjulia_kernel.cl'...
Error opening file qjulia_kernel.cl
Error: Failed to load kernel source!
Failed to setup compute kernel! Error 1
logout
[Process completed]
Code:
/Users/mani/Downloads/transpose/transpose ; exit;
Galactus:~ mani$ /Users/mani/Downloads/transpose/transpose ; exit;
Error: Failed to load compute program from file!
logout
[Process completed]
And here's output from hello.c, which happens to work:
Code:
Galactus:~ mani$ /Users/mani/Downloads/OpenCL_Hello_World_Example/build/Debug/hello ; exit;
Computed '1024/1024' correct values!
logout
[Process completed]
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Sep 12, 2009
When 10.6.1 include new ATI Kext.
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Apr 25, 2009
Do you think with openCL which one is better. GT 120 or 4870.
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Jul 4, 2010
When Snow Leopard came out last year, Apple made marketing out of the fact of having no new features. Arstechnica wrote a splendid review praising the potential of the two new core technologies it brought, and the perspective performance improvements coming from them.
The "radically new development paradigm" was promising for a slower deployment, but I though it would have been compensated by the advantages in speed and code maintainability.
So I've been periodically sampling the Internet for news on either technology. I expected lists of applications employing them, or some visibility on existing apps directories (like "GCD" or "OCL" tags). In lack of these I then resorted to expecting some random block posts from developers, but even of this I find very little.
The most material you find from Robert Watson, concerning applications at the FreeBSD project!
So what happened to these technologies under the Mac? Did they pass ignored by Mac Developers? If so, why? If not, why do they not reflect publicly the same excitement that the competent Ars masters showed?
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May 6, 2010
I am trying to figure out for certain, does the newest 13" MacBook Pro model with Nvidia 320M graphics support OpenCL out of the box? I would guess that it does, but I haven't found a clear answer for it anywhere. The 9400M on the previous model is mentioned as OpenCL-supported.
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Nov 23, 2009
Still waiting on my new 27" i7 imac. Trying to figure out if current desk is suitable. Can someone tell me the dimension in inches of the imac 27 from top of desk to the top of the imac
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Aug 15, 2010
I hope you don't mind helping a guy out in his choice in what he truly needs... so I guess I'll get down to the basics.
First off, music is my main priority when it comes to computing, I write all sorts of electronic music, I'm used to working in Windows under Ableton or FL Studio, so I'm not hip to the Mac software for these functions.
In addition to the electronic music I write, I'm also very much into music instruments, I've been playing drums for around 8 years now, bass for 5 years, guitar even... so I plan on multi-track recording... up to 16, maybe even 32?I do plan on opening up my own home studio, I would be using this PC, (not sure if the MBP or the iMac)
I'm also a lightweight gamer, playing games such as Team Fortress 2, World of Warcraft, or StarCraft II (Diablo 3 will probably be my biggest gaming vice when it comes out) sparingly in my free time, which would be better for this sort of light gaming?I sometimes spend up to 8 hours on the computer, also, so if these screens are too harsh on the eyes after extended periods of time, I'd appreciate if someone could enlighten me to that.
SO, with all that said, which do you guys think would suit me better? (and I'm really thinking the iMac would)... I used to want portability, but I don't think I'd feel comfortable taking a $2,000 laptop with me around campus at the local community college.
- Needs to be able to record up to 32 tracks of audio
- Needs to be able to render high quality tracks
- Minimal latency
- Able to run some of the less graphic intensive games out now
- Easy on the eyes for extended periods of time
Oh, I'm also an amateur filmmaker, I love filming, editing, and producing, etc.Would you guys suggest the i5? i7? Oh, and what clock speed does the 2.93GHz i7 run at when in turbo-boost using all cores?Oh, and what's the resale value of the iMac compared to the MBP? I heard the MBP retain pretty well, is the same true of iMac's?
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Dec 31, 2010
System Spec: Late 09 21" 3.06, GeForce 9400, 4gb ramCurrently I have itunes and safari running, if i enable the visualizer my imac is noticeably slower, especially when browsing the internet.I thought it might be the fact I was running a second 1080p display from the 9400 would have caused the slow down. But the same thing occurred after i disconnected it. After repairing permissions and restarting, pmram etc.Is the 9400 causing the slowdown? I know its fairly old but itunes visualizer and safari should be quite basic tasks. Its not the end of the world i know but does the 27" imac have similar issues as i plan to upgrade my machine in 2011.
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Aug 12, 2008
I had a DLink DIR-655 Wireless N router and my wireless was running very fast, 9.7MB using [URL] with no lag looking up sites. I had to upgrade the router since I was hosting a site and the router wasn't working properly for that.
So, I bought a Linksys WRT610N Dual Band router. I have the iMac running on the 5GHz band and it runs around the same speed.
HOWEVER, when I open Safari or Firefox, in the status bar, it says "looking up google.ca..." or whatever site I'm browsing for and can take up to 5-10 seconds before it starts to display the site. When it is on the site, browsing around is fast as long as it doesn't change domains.
ANOTHER HITCH, I have VMWare's Fusion installed on the iMac and Vista installed there and there is no lag to browsing a site. When I type in the site, it immediately goes to the site and I am able to browse fine.
Any thoughts on this?
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Sep 11, 2008
The Mini Has Some Great Software On it, Could i Use Migration Assistant To Transfer The Programs To My iMac Without Losing My Data On My iMac? Or is There Any Other Way?
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Mar 28, 2009
I think it worked at one point, but sometime around the point when I set up Fusion with the partition, Windows Aero turned off and is no longer an option in the display settings. I installed this driver with the modded INF to see if it would do anything, but Aero is still not an option. I also have issues playing some games in Fusion, while they work fine in Boot Camp.
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Dec 29, 2009
I sent an email to Steve Jobs about my yellow tint 21.5 iMac issues (three exchanges, all affected, resulting in a refund). I got a call from Dena at Executive Care within 24 hours.
She said they are aware of the problem and do not know how widespread it is. According to Dena, the issue is not resolved and that ordering a new iMac will not result in a fixed display.
She said the engineers are working on it now and they are not sure if it's hardware (most likely) or software related. Further Apple stores cannot do repairs because they haven't determined what the issue is.
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Mar 1, 2010
I have been reading and reading but I can't seem to find the answer. Im trying to figure out if the optical drive for the iMac has a slimline sata connector or a standart sata connector. Reason is I'd like to install an SSD and use an optibay adaptor.
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Jul 24, 2010
Hey guys! So just a few days ago, I received my iMac, and boy do I love it. A definite upgrade and improvement from my old Acer Aspire 3680.
But despite this, I have noticed that my iMac does have a slight yellowish tint at the bottom to corners. I just arrived at my desk, and the login window (I keep a password lock) had a slight yellowish tint when I woke up my iMac from sleep . I then noticed that the bottom two corners had a slight yellow tint to them. I verified this via the MacRumors Forum post, and I was able to find it out by making my desktop background white. Again, it may not seem noticeable at first, but if you examine it closely, it becomes apparent.
I've already called my local Apple store and one of them said that don't know about this issue (?) and that they could schedule an appointment for me. I declined because I have to have me parents take me and I'm pretty sure that I can't handle the load of carrying a 20lbs. computer w/o dropping it (yikes!).
So here's the big question, should I go to my local Apple store or call the Apple hotline when it's open (currently closed at the time of this thread)? I don't want to sound like a lunatic or someone that just wants to get a better iMac for free. Again, it's slight, but considering that I do movie editing and Photoshop work
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Mar 3, 2009
Since the positive/negative ratings on the front page are always more tilted towards negative, rate the iMac update by stars here. Feel free to add a comment explaining your rating, or what could've made it better.
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Oct 25, 2009
I don't know what the deal is. I'm trying to install 2 sticks of 2GB into my 7,1 iMac, and the screw just won't turn. I'm using a standard Phillips head, and nothin' doin'. The screw is now starting to strip, so I guess I'm going to have to take this into the friggin' Apple Store just to have them open the thing.
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Dec 2, 2009
Had a quick question. I'm on my third 27" stock 3.06Ghz imac that was replaced yesterday. The good news is that so far it doesn't seem to have any of the problems of my previous two 27" imac's. There is one thing though. A couple of seconds after pressing the power button to bootup there is a brief mechanical sound from the dvd drive like a quick ejecting sound even though there is no cd in the drive. My first 27" imac dvd drive made the sound but the second imac 27" Imac I had didn't. Is this sound normal? Would be curious to know why two out of the three 27" Imac's I had make that noise.
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Mar 30, 2010
I have found a bug with the 27" iMac (i upgraded from a 24" imac. stupid move.?)when I zoom in on an image the window with go on the RH side to the iMacs max screen width. in that it hides the scroll bars behind the Pallet and side menus and options.Has anyone else had this problem.?has anyone else found a cure for this also.
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May 25, 2010
I forgot my admin password on my iMac recently and so i used the reboot with OS X snow leopard install disc to reset the keychain, but now on my login screen, it used to be just my account name, there is one called "Other" so i went into accounts in system preferences and tried to delete it but it isnt there?is really annoying me p.s. the "other account" isnt actually an account it says "Other" and when you click on it asks for your username and password...so i type in the admin accounts name and password (admin account is the only one on this computer), and it just opens up my admin account.
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Nov 16, 2008
I have a G5 iMac - 2.1 ghz, 20", 250gb hd and 3gb ram, but it has been having problems starting up and it is also going to sleep midway through a task or at random times totally unprompted.
It now almost never starts up first time (I keep the iMac mains power lead always connected and the mains electricity supply turned on at all times now)- sometimes I will get the 'Start-up Chime' and then the cooling fans start spinning very loudly and then after a few seconds the iMac stops the start-up routine, but often when I try to start-up I don't even get the 'Start-up Chime' and I have to leave it for some time before trying again.
I can also now only get the iMac to run as a Firewire Target Disc by starting up with the T key held down and then using an old G4 (400mhz) Powerbook Titanium as the screen/keyboard by using the iMac HD as the startup disc for the Powerbook but this is obviously just a temporary work around.
I have also tried backing up all my data, and reinstalling the Mac OS X onto the iMac but the iMac still will not start-up normal and I still have to use it just as a Firewire HD.
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May 3, 2012
Have a new (for me) iMac and need to transfer all 10.4 files including mail, etc.from an older iMac to my newer one whioch is running 10.6.
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