Max cudaMalloc under Windows 7 is there a restriction?

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi,

Is there a restriction on the size of a block of memory I can allocate using a single cudaMalloc / cuMemAlloc under Windows 7?

Cuda 2.3 release notes [link] state the following under 'Known Issues for Windows Vista and Server 2008 :

There is no such mention referring to Windows 7. However, I ran an experiment that looped through various block sizes beginning from the memory size reported by the cudaGetDeviceProperties reducing each successive attempt by 100 MB. The maximum memory I could allocate on a Tesla C1060 (4GB memory size) was about 895 MB.

Is there a way I can get around this under Windows 7?

Thanks in anticipation!

2

Win7 is the same as Vista in this regard. And no, it can’t really be worked around (with normal WDDM drivers, at least).