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IBM Power Systems 775 for AIX and Linux HPC Solution
book

IBM Power Systems 775 for AIX and Linux HPC Solution

by Dino Quintero, Kerry Bosworth, Puneet Chaudhary, Rodrigo Garcia da Silva, ByungUn Ha, Jose Higino, Marc-Eric Kahle, Tsuyoshi Kamenoue, James Pearson, Mark Perez, Fernando Pizzano, Robert Simon, Kai Sun
October 2012
Intermediate to advanced content levelIntermediate to advanced
358 pages
11h 26m
English
IBM Redbooks
Content preview from IBM Power Systems 775 for AIX and Linux HPC Solution
Chapter 2. Application integration 129
Table 2-2 Performance counter numbers for HFIs
2.4.4 Considerations for using CAU
The CAU is a unit that accelerates the processing of collectives within a system that is made
up of multiple nodes that are interconnected via a cluster network.
Collectives are distributed operations that operate across a tree. The following primary
collective operations are used:
򐂰 Reduce: Gathers packets from all nodes expect the root node in a tree and reduces the
nodes to a single packet that is delivered to the root node. The root node is any node in
the tree (not necessarily the node at the top of the tree).
MP_INSTANC ...
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Publisher Resources

ISBN: 073843731XPurchase book