Greetings,

Is “co_aggeregate” operation called before or after “ca_post_reply” operation?

Thanks.

Colin

Hi,

As the comments of co_post_reply (in cart’s api.h):

               /**

                * Collective RPC post-reply callback.

                * This is an optional callback. If specified, it will execute after

                * reply is sent to parent (after co_aggregate executes).

                */

For example, bcast traverse a sub-tree like node_a (parent) -> node_b (self) -> node_c and node_d (children).

At request forward phase -- node_b gets request from node_a and forward to node_c+node_d.

At reply aggregate phase – node_b will send reply to node_a, but the reply will be delayed until gets and aggregates  replies from its children (co_aggregate is for this purpose). When the aggregated reply sent to parent, it will call the co_post_reply to do some cleanup work if it is provided (free memory or whatever else).

Thanks,

Xuezhao

Greetings,

Is “co_aggeregate” operation called before or after “ca_post_reply” operation?

Thanks.

Colin