the ``smpi/async-small-thresh`` item. The default value is 0. This
behavior can also be manually set for mailboxes, by setting the
receiving mode of the mailbox with a call to
the ``smpi/async-small-thresh`` item. The default value is 0. This
behavior can also be manually set for mailboxes, by setting the
receiving mode of the mailbox with a call to
this mailbox will have this behavior regardless of the message size.
This value needs to be smaller than or equals to the threshold set at
this mailbox will have this behavior regardless of the message size.
This value needs to be smaller than or equals to the threshold set at