DirectGMA allocated GPU memory aperture size

Discussion created by yeilam on Oct 10, 2017


We're using FirePro W8100 and a frame grabber (from Matrox) with DirectGMA to OpenCL.

In the control panel of the FirePro we enable DirectGMA and allocate the maximum aperture memory size which is 128MB.

However this is much less than we need:

We are usnig 3 cameras 20MB per frame each at 30Hz and need a delay buffer for about 0.5 sec. That makes 300MB per camera or 900MB total.

So we would like to pre-allocate for DirectGMA about 1GB of the 8GB GPU memory.

How is it possible?