file i/o

Im wondering how to deal with large files. Im guessing theres 2 ways

  1. allocate space on the video card to read to or write from and then do the I/O
  2. create a buffer and used that to transfer to and from the video card, duplicating everything

Is there a noticeable difference between the 2?
Thanks

Actually there is only one way: You have to make a buffer on the CPU, and make a same size buffer on the GPU. Fill the CPU buffer, then you cudaMemcpy() from the CPU to the GPU (“host to device”). Or are you asking about something else?

this post should be ignored/deleted. sorry