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courses:mapreduce-tutorial:step-31 [2012/02/06 08:13] straka |
courses:mapreduce-tutorial:step-31 [2012/02/06 08:21] straka |
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It is crucial that all the mappers run simultaneously. This can be achieved using the ''/ | It is crucial that all the mappers run simultaneously. This can be achieved using the ''/ | ||
+ | |||
+ | When the computation finishes, only one of the mappers should print the results, as all of them have the same results. For simplicity, the '' | ||
===== Example ===== | ===== Example ===== | ||
Line 98: | Line 100: | ||
</ | </ | ||
- | You can run the example using: | + | You can run the example |
- | wget | + | wget --no-check-certificate ' |
+ | make -f / | ||
+ | rm -rf step-31-out; | ||
+ | less step-31-out/ | ||
+ | |||
+ | To run on a cluster with //C// machines using //C// mappers: | ||
+ | rm -rf step-31-out; | ||
+ | less step-31-out/ | ||
+ | |||
+ | ===== Exercise 1 ===== | ||
+ | Implement an AllReduce job on |