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MPI reduction #12

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neapel opened this issue Jun 11, 2013 · 0 comments
Open

MPI reduction #12

neapel opened this issue Jun 11, 2013 · 0 comments
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MPI backend (seco...

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neapel commented Jun 11, 2013

simple way: send data to master and reduce there; will not scale as well: O(n)

complex way: send data to node[my_index/2], reduce, repeat: O(log n).
@ghost ghost assigned neapel Jun 11, 2013
neapel pushed a commit that referenced this issue Jul 21, 2013
Unit tests for MPI state #9, resize #11 and reduction #12
1ffb155
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