What's the usage scenario difference between ucp_am_callback_t and ucp_am_recv_callback_t

[XCloudAI]

In ucx API document file, the section 6.6.3.4 introuce ucp_am_callback_t and 6.6.3.5 introduce ucp_am_recv_callback_t. What's the usage scenario difference between them? There's no example code.

[yosefe]

Plse see example for ucp_am_callback and ucp_am_recv_callback_t
The former is for receiving active message notifications, and latter for receiving the payload of long active messages.

[XCloudAI]

Good example. Got it.