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Radeon R9 290 4GB cards OpenCL info says 2GB global memory???

Question asked by 08amczb on Feb 6, 2014
Latest reply on Feb 12, 2014 by 08amczb

Yesterday arrived my tow brand new ASUS AMD Radeon R9 290 4GB video card. I've installed the latest driver, and when I started my OpenCL project I've realized it doesen't see the half of the memory. What shuold I do? It's a driver bug?

Here is tow pictures from Geeks3D GPU Caps View:



I'm using Win7 Pro 64bit Intel i5-4440, 16GB ram, R9 290 is the second video card, the first is: ASUS ATI Radeon HD 5450 (so the display connected to this one)

Thanks for help!


EDIT: My process is 64 bit. I've set GPU_MAX_HEAP_SIZE environmental variable to bigger values than 50, but it only worked for smaler values.

EDIT2: Setting GPU_MAX_ALLOC_PERCENT environmental variable to 100 resulted 3GB global memory and 3.7GB max allocation size.