异步 API

Question

Given that OpenCL is meant to be an API for heterogeneous programming, it by almost definition has a huge latency penalty associated with it. Therefore there MUST be an asynchronous API for it.

I am however finding it difficult to find the asynchronous API in OpenCL.net. I have found the OpenCl.Net.Event struct, which seems to be an out parameter in most API calls. However I can't find anyway to associate a callback on the event, as it seems clSetEventCallback is missing from opencl.net .

Does anyone know how to await an asynchronous operation in opencl.net ?

Answer 1

I don't know much about OpenCL.net, but isn't the CommandQueue what you are looking for? You can enqueue all your aynch tasks a fait with the Finish command until all tasks are finished?

For example here: GPGPU image processing basics using OpenCL.NET under The image processing part

For clSetEventCallback i only found clFinish or clWaitForEvents.

Refering to your statement:

as it seems clSetEventCallback is missing from opencl.net

I could not find any way to do what you want, sorry.

EDIT : This seems to be very intestring: Google-Code / GPUTracer . You should take a look at OpenCL.cs and Event.cs. I think they solved your problem.