GNU/Linux man pages
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GNU/Linux |
RedHat 6.2(Zoot) |
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bfstate(1) |
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bfstate − Report status of LAM buffers.
bfstate [-ghlp] [-B <#msgs>] <node(s)>
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−g |
Include information on system messages. |
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−h |
Print the command help menu. |
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−l |
Print buffer levels and limits. |
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−p |
Display individual packet information. |
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−B <#msgs> |
Limit the number of messages reported. |
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:
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NODE |
node containing the message |
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DEST |
destination node of the message |
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EVENT |
message event (see nsend(2)) |
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TYPE |
message type |
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LENGTH |
message length in bytes |
The −l option prints the following summary on each node’s buffer system, after all messages for that node have been displayed.
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- |
maximum size of the internal buffer pool |
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- |
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.
bfstate n12-14
Display the status of all network message buffers on nodes 12 through 14.
If no buffered messages are found, only the title line is displayed and information from the −l option, if present.
bfctl(1), mpimsg(1)
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bfstate(1) | |