Most MPI users will probably not need to use the
bfstate
command; see mpimsg(1).
The
bfstate
command displays information on LAM network message buffers on any node
in the multicomputer.
For each message,
bfstate
outputs the following information:
NODE
node containing the message
DEST
destination node of the message
EVENT
message event (see nsend(2))
TYPE
LENGTH
The
-l
option prints the following summary on each node's buffer system, after
all messages for that node have been displayed.
maximum size of the internal buffer pool
amount of space currently used in the pool.
Individual message buffers hold network message packets, which may
be only part of a complete user message.
Normally,
bfstate
summarizes packets into complete messages.
If all packets for a message are not on the same node, no information
is displayed.
The
-p
option disables this behaviour and one line on information is displayed
for each packet.
The
-B
option changes the maximum number of packet buffers acquired
(and hence displayable) from the node.
