3.04.2009

Cuda

I got Nvidia's SDK examples running on my laptop last night, but I'm afraid that Opengl might be putting memory pressure on the gpu, which makes Cuda a little problematic. Nvidia's driver is supposed to do some kind of memory management, but I have no idea how it pages things to main memory and I'm 99% certain it doesn't give the OS very good notifications of what it is doing. I need to investigate the subject.

~/NVIDIA_CUDA_SDK/bin/linux/release$ LD_LIBRARY_PATH=/usr/local/cuda/lib ./bandwidthTest
Running on......
device 0:Quadro FX 570M
Quick Mode
Host to Device Bandwidth for Pageable memory
.
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 1152.5

Quick Mode
Device to Host Bandwidth for Pageable memory
.
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 1240.4

Quick Mode
Device to Device Bandwidth
cudaSafeCall() Runtime API error in file , line 725 : out of memory.

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