hello everyone,
and here is my problem.
I’ve recently gained acces to gtx480 and I am a bit concerned because I have expected transfer rates to be much higher. using oclBandwithTest from sdk i have only 3 MB/s with host to device transfer, which is lower than gts250 which i used before (4 MB/s).
i dont have any idea which is causing the problem. any ideas ?
or at least what are the proper bandwith values for this card ?
motherboard have PCI-E x16 v2 so i could be quite fast.
Host to Device Bandwidth, 1 Device(s), Paged memory, direct access
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2928.6
Device to Host Bandwidth, 1 Device(s), Paged memory, direct access
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2847.5
Host to Device Bandwidth, 1 Device(s), Pinned memory, direct access
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 5757.4
Device to Host Bandwidth, 1 Device(s), Pinned memory, direct access
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 5781.1
Device to Device Bandwidth, 1 Device(s)
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 115736.9
my specs:
ubuntu 10.10 64 bit,
i7 cpu
gigabyte, P55A-UD4