Linux Ubuntu 12.10
Sapphire Radeon Vapor-X HD 7970 GHZ OC 6GB
AMD 13.2 driver and APP SDK 2.8
I would like to test memory on the card. If I run "memtestCL 3992 1" I have no errors. When I run with 3994 or more I got tons of errors.
Also, as a last resort, I inserted "cout << CL_DEVICE_MAX_MEM_ALLOC_SIZE <<endl;" before clCreateBuffer command and got printed out 4112 as Max allocatable memory (if I understand it correctly).
So, my question: is there a bug in memtestCL or I have, actually, memory errors and it is better to replace a card?
Also, are there any other ways to test GPU memory? Especially 6Gb.