Memory Management for IMAQdx

[pfigliozzi]

I am having trouble writing a labview program to acquire a sequence of images into memory and save them onto my computer. I used an example VI that got it to work but I am limited to 250 frames (roughly 500MB) of image data to store into memory. My computer has 8GB of memory running Windows XP 32bit. I realize that windows 32bit can only use ~4GB of my available memory but I should still be able to record much more image data than 500MB. Is there anyway I can see or tell the IMAQdx driver how much memory to use for image acquisition? What is preventing me from using more of my memory?

[BlueCheese]

Hi, The memory for some camera types must be mapped into kernel address space, which is limited to 2GB for the whole system on 32-bit Windows. Generally this space gets filled pretty fast. By far the best suggestion is to move to a 64-bit OS as then the memory space is virtually unlimited. Eric

[pfigliozzi]

I have a computer hooked up to my GigE camera that is running the 64-bit version of Windows 7. I have installed the evaluation copy of LabView 2011 to see if upgrading the software will actually work. I got the camera to work once I installed my version of the IMAQdx. I ran the Example Low-Level Sequence.vi to see if I can acquire more data than I could on the 32bit version of LabView. It looks like I have no trouble acquiring 500 frames of data (I was only getting 250 frames on the 32bit os). But it seems I can't go beyond that. For example, when I try to use the vi to acquire 1000 frames (this still equates to roughly 2GB of data) it seems to get about halfway done and then gives me an error:

Error -1074360293 occurred at IMAQdx Get Image.vi

Possible reason(s):
NI-IMAQdx: (Hex 0xBFF6901B) Timeout

Any ideas on how to fix this? I guess this is at least better than the out of memory error I was getting on the 32bit os. I really appreciate the help.

Running Windows 7 SP1

[BlueCheese]

Hi, This error generally is not anything on the IMAQdx side. What sort of camera are you using? Is it possible the camera is configured to stop sending after a set number of frames? Eric