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Can AMD opencl support 6GB of device memory?

Question asked by drallan on Feb 1, 2013
Latest reply on Mar 4, 2015 by timchist

Does anyone know if AMD opencl can support 6GB of physical device memory ?

Specifically, on a Tahiti 7970 single GPU card with 6GB of DDR5 memory.

 

One concern is that opencl uses 32 bit pointers. There is a 48 bit base address in the

128 bit memory descriptors, but is it used?, how does it work with 32 bit pointers?

The other is that the performance of the higher memory is degraded by page swapping

or some other system mechanism.

 

(Yes, I need more memory !)

 

Many thanks for any input.

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