problem with cudaMallocHost && concurrent Kernels

Accelerated Computing CUDA CUDA Programming and Performance
1

hi all,

I’m trying to run 2 kernels (the same) at the same time on GTX 460 (compute cap. 2.1) and CUDA 3.2. But for cudaMallocHost I’m getting the invalid argument error. I know that for Async kernel launch I need cudaMallocHost but still I get the error.

Thanks!!
myConcurrentKernels2.cu (3.23 KB)

2

you have to allocate the host memory with cudaMallocHost instead of malloc, not replace the cudaMalloc call with cudaMallocHost

3

Unfortunately it did not help (but you were right). I altered the code a little bit. Still I get the error, plus these kernels are not working concurrently.
myConcurrentKernels2.cu (3.87 KB)