Just updated from from Cuda 2.0 beta 1 to Cuda 2.0 release and am having an issue with pinned host memory.
I use Cuda to process video, the last stage of this processing involves a device to host transfer to pinned memory. Once this transfer is complete, I use this pinned host memory in a DMA transfer to a third party video display device (AJA or Bluefish). These DMA transfers worked perfectly with Cuda 1.1 and even the beta Cuda, but appear to be failing with the final release of Cuda 2.0.
Any idea’s what has changed in the host pinned memory between beta and release?
Windows XP, 32 bit, Dell T7400 workstation, Quadro 5600
BTW, I also support the Deltacast video adapter which does not support transferring from nVidia’s host pinned memory, but provides it’s own buffer of host pinned memory. This device to host transfer (sync) is working fine, so it appears to be related to host pinned memory supplied by Cuda.