device access directly hard disk

Accelerated Computing CUDA CUDA Programming and Performance
1

Hello,

I am relatively new to cuda so this may be a dummy question.

I know we can allocate sectors in host (cpu) then transfer to gpu and then write back to host, but I was wondering if it possible to bypass the data transfer and read/write disk sectors directly.
Are the msdn functions readfile(), writefile() applied in device code? Can we write something from device mem to hard disk?

Any help appreciated,
Amanda

2

CUDA devices can’t access peripherals, like hard disks. The CPU code has to manage disk I/O, and load data into GPU memory.

(Given the rather large speed difference between PCI-Express and SATA, I don’t think there would be any advantage to bypassing the CPU…)