I fear the worst – the CUDA 3.2 driver is “broke”. Platform: Linux, 32-bit, Ubuntu 9.04,
I am running a complex genetic algorithm on CUDA. We finished the project long time back - CUDA 2.3 times…
So, today I just re-compiled it on CUDA 3.2 installation and found that it does not return correct results anymore.
All results were zeroes… OMG! Unbelievable…
The same code ran rock solid during CUDA 2.3
So, Keeping the driver at 260.19 (the one that comes with CUDA 3.2 Linux 32-bit), I just changed the toolkit to CUDA 2.3.
No Change! The problem was persistent.
So, I downgraded the system to 190.53 driver (the one that comes with Linux CUDA 2.3) and then everything works!!
I think this problem could be related to what was posted in http://forums.nvidia.com/index.php?showtopic=186015
Is NVIDIA aware of this problem?
It would be difficult for me to get a bug-report on this. One because, genetic algorithms are very complex to control and debug. Other because, my bandwidth is limited. It would require hours together to produce a repro case,
Any help guys?,