Is there any way to fire an event (for benchmarking purposes, similar to cudaEvents in the CPU code) from a device kernel in CUDA?
E.g. suppose I would like to measure the time passed from kernel start to the first thread ever that starts a computation and the time passed from the last thread that leaves the computation to the CPU return.
Can I do that?
On
An ugly workaround would be writing to some managed-memory location, and having a host-side thread poll it and fire the event when the value changes.
The device runtime API (used with dynamic parallelism) does have limited stream and events support, but event timing is not supported.
So, no you can't do that.