hi im hoping that I can find some answers here.
Im working with 4 tesla M2050 on “SuperServer 7046GT-TRF-FC475” server.
and im working with cuda C on Ubuntu 11.04 with CUDA5
when I query with cudaDeviceCanAccessPeer()
peer access between GPU0 <=> GPU1 and GPU0 <=> GPU1
but the access between GPU1 <=> GPU2 can not communicate
I think this is due to the pci-e controllers but i would like to know if someone could clarify this for me.
the reason i am asking is that i wanted to use data that resides one one GPU to do calculations on the rest