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Altera_Forum's avatar
Altera_Forum
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8 years ago

Single work item Task parallel OpenCL kernel

Hi, Does the following code, invokes the kernel to run like the attached image? or they runs one after another ? clCreateCommandQueue(context, device, NULL, &status); clEnqueueTask(command...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

If the tasks do not depend on each other such as using channels or pipes, then they should all run immediately one after the other (appearing to launch almost at the same time) once event1 has been completed. Enqueuing only places the task in the command queue and are executed sequentially as a FIFO without blocking on the host. If task2 depends on task1, some sort of management needs to be handled through events, channels, or barriers.

So ideally it would look like this, having them overlap each other right from the start: 


|   Task_3
|  Task_2
| Task_1
|------------------------