Fragmented Messages

From HPCBugBase

Contents 1 Fault Description 2 Statistics (Frequency) 3 Other Findings and Contexts

[edit] Fault Description

In general, messages between processes should be aggregated into the chunks of sufficient size to avoid the overhead of connection handshaking and message headers.

[edit] Statistics (Frequency)

[edit] Other Findings and Contexts

Interaction of computation and communication can influence the choice of an appropriate message size. A typical situation is that data becomes ready for sending as computation progresses. Waiting for sufficient amount of data to be become available can delay the communication. A tradeoff between the penalty of delay and the overhead of fragemented messages is dependent on application.