Graphic driver of low version causes wrong cuda program result

Accelerated Computing CUDA CUDA Programming and Performance
1

hi all,

i used to run my cuda codes properly, both on cuda6.0 or cuda9.2 with a gtx1070 + 398.xx version driver. However, for some reason, i had to install a specified version (372.60) driver, adn then i got a different result from the same codes on cuda6.0.

i wonder if this problem is due to that some certain funtion has different response in lower version driver?

if so, what functions are the most suspicious?

best regards

2

Implement proper CUDA error checking.

Then have a look at this table.

3

Thank you for your advice @tera.

Actually there was no error returned after each function. The CUDA program could still run successfully, and returned a result ( a 3D image ). Everything looked good until i checked that 3D image visually and found the values were not correct.

4

Recommendation: Eliminate “some reason” and then install the latest driver package available for your GPU.