No support for concurrent kernels on the K1?

Autonomous Machines Jetson & Embedded Systems Jetson TK1
1

The cudaDeviceProps::concurrentKernels property is ‘1’ but the ‘concurrentKernels’ Sample always serializes kernel execution.

Is this a temporary issue?

2

Perhaps this is related to the fact that the K1 has only one multi-processor (SMX).
And/or it does not have the resources (registers,shared mem,local parameters) to run more than one of these kernels simultaneously, you’ll have to check the occupancy.

N.

3

The “Concurrent Kernels” sample launches very tiny low-resource kernels so that’s not the problem.

The same example runs on the GK208 (~2x the resources of a K1) without problems.

4

I filed a bug (#1526164).