Posts by Alberto Tanikawa

21) Message boards : Number crunching : GPU crunching question please (Message 14779) Posted 10 Mar 2009 by Alberto Tanikawa Post: Thanks for all the help folks, but I will put off using my recently acquired 3870 for crunching until an official app supporting ATI gpu's is available. I just couldn't get anything done (other than crunching) with 0.19b or 0.19d, with either 8.12 (which did not want to install in my machine) or 9.1 drivers. I will however keep crunching with the optimized AMD app in my Dell, and in my Mac Pro. Not as fast to crunch, sure, but at least I won't stop contributing.
22) Message boards : Number crunching : GPU crunching question please (Message 14325) Posted 8 Mar 2009 by Alberto Tanikawa Post: I found that it was best to go into Control Panel, Add or Remove Programs, and remove the ATI display drivers first. The 0.19* apps seemed to behave better than with just adding 8.12 without removing existing ATI drivers first. Thanks again Ice! Additional to the things Ice mentioned you can try to play with the options in the app_info.xml (look to the readme file). Limiting the app to one concurrent WU (option n1) and/or increasing the wait factor can also help if the system can't stand the permanent high GPU load. I did play with the n option a bit, tried 2 and 4, but left it at 2. I didn't change the wait factor though.
23) Message boards : Number crunching : GPU crunching question please (Message 14317) Posted 8 Mar 2009 by Alberto Tanikawa Post: Install the 8.12 drivers ... I'll try that once I have access to the Dell again.
24) Message boards : Number crunching : GPU crunching question please (Message 14285) Posted 7 Mar 2009 by Alberto Tanikawa Post: Ice, I've got the 3870 installed, Catalyst 9.1 drivers, no other application running, only Boinc with the optimized apps for ATI GPU (0.19d Win64), but it's crashing the graphics driver very often (the Catalyst Control Center is not running in the background). I can't leave my computer crunching away without checking up on it from time to time. Is it the nature of the beast as it's not a final version? When it does work it's very fast, making my Dell AMD dual core nearly beat my Mac Pro with 8 cores!
25) Message boards : Number crunching : GPU crunching question please (Message 14093) Posted 6 Mar 2009 by Alberto Tanikawa Post: Thanks Ice, I think I got it. I wish I could put a 4870, but it's a Dell, and it's cramped in there. 3870 is the best that fits in the machine and in my budget.
26) Message boards : Number crunching : Optimized OS X Applications (Message 14084) Posted 6 Mar 2009 by Alberto Tanikawa Post: Of course we are interested ... Me too :)
27) Message boards : Number crunching : GPU crunching question please (Message 14081) Posted 6 Mar 2009 by Alberto Tanikawa Post: I'm getting a 3870 to help crunch on a Vista 64 machine. Do I have to use optimized apps in order to use the gpu, or is it done automatically? Also, if I need to use optimized apps, how do I go about it? Depending on how many WU a 3870 can crunch at a time, I may get another 3870 to crunch on another machine.
28) Message boards : Number crunching : Milkyway support OpenCL ? (Message 13952) Posted 5 Mar 2009 by Alberto Tanikawa Post: I'm going to be working on an OpenCL version the milkyway app... I look forwards to that! If Apple does a good job with Snow Leopard I would fill out all my PCI Express slots with GPUs. Problem is that the selection of GPUs on the mac is SO limited, and overpriced (pc 4870 is $150, mac 4870 is estimated at >$300!). Maybe it's time I bootcamp Vista 64 on my Mac Pro...
29) Message boards : Number crunching : GPU crunching question please (Message 12111) Posted 21 Feb 2009 by Alberto Tanikawa Post: Yeah the only current GPU app for milkyway is Cluster Physik's which uses ATI cards. We're working on one for Nvidia. Thanks for clarifying that!
30) Message boards : Number crunching : GPU crunching question please (Message 12105) Posted 21 Feb 2009 by Alberto Tanikawa Post: As I'm crunching I do not yet see any WU being worked by my GPU (Nvidia/Apple 8800GT). Is it because the MW application is not yet compatible with GPU on the mac, or that Boinc is not ready yet for GPU crunching on the mac? Or that Apple/Nvidia are dragging their @ss in offering an updated driver for the system?

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