plan for Simple GTX 580 Test….

[Esteban Aguilera]

That is not true, I am using 2 monitor from my unique GPU… and the intensity pro for reference.

GTX 460

Di Davinci Resolve Colorist

[Juan Salvo]

Edit below.

[Juan Salvo]

The non Mac , non-efi nvidia gpus do not show screen until the os is fully loaded. When using these cards sa processing units for resolve, this is not an issue. But if using it as a GUI, it can be a bit of a hassle if something goes wrong. My point was that you want a native card (I.e gt120 or ati card) to run the GUI, and a 580 without any monitors to execute processing, Additionally, if you have a monitor connected to your graphics card resolve is unable to effectively use it as a CUDA processor. Which seriously hinders performance.

[Esteban Aguilera]

What a differencie, nice to know it !

Di Davinci Resolve Colorist

[David Pirinelli]

A quick question for anyone using a 580.

Can you check if it is running at PCIE 1.0 speed or PCIE 2.0 speed?

Easy way to tell is to look in CUDA-Z and see what the “Host to Device” and “Device to Device” “Pinned” speeds are.

If it is running at PCIE 1.0 (2.5 GT/s) , this number will be in the range of 2500-2900. If it is running at PCIE 2.0 (5.0 GT/s), this number will be in the 5000-5900 range.

When I was working this out for GTX470 and GTX480 I found a place in ROM to turn this on, but in 570 and 580 this trick doesn’t work the same and I have noted that some people get one range and some people get the other. If you report this, please also list what slot, what Mac, what other cards, etc.

Also, if you are running a GTX570 or 580, do NOT run the 10.7.4 Beta Update, it will turn your GTX5xx back into a pumpkin. (Can be re-enabled with ATY_Init )

[Rohit Gupta]

./bandwidthTest –device=0
[bandwidthTest]
./bandwidthTest Starting…

Running on…

Device 0: GeForce GTX 570
Quick Mode

Host to Device Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2833.5

Device to Host Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2703.7

Device to Device Bandwidth, 1 Device(s)
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 125190.9

[bandwidthTest] – Test results:
PASSED

Press to Quit…
———————————————————–

$ ./bandwidthTest
[bandwidthTest]
./bandwidthTest Starting…

Running on…

Device 0: Quadro 4000
Quick Mode

Host to Device Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2827.3

Device to Host Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2769.5

Device to Device Bandwidth, 1 Device(s)
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 72543.1