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P1 Update: Quad-core T3

Allwinner chips have a special USB boot mode (FEL) that allows flashing even if the NAND is corrupt.

The most significant gain is in multi-core scheduling, thanks to the improved core affinity algorithm. Quad-core T3 P1 Update

Leo stared at the dull screen of his old sedan's dashboard. His "Quad-core T3 P1" unit, once the pride of his DIY interior, had grown sluggish. Maps stuttered, and the music frequently cut out—it was a digital ghost of its former self. Allwinner chips have a special USB boot mode

$ ./bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.3.jar wordcount \
  -libjars /<PATH_TO_ALLUXIO>/client/alluxio-2.9.5-client.jar \
  alluxio://localhost:19998/wordcount/input.txt \
  alluxio://localhost:19998/wordcount/output

<configuration>
  <property>
    <name>alluxio.master.rpc.addresses</name>
    <value>master_hostname_1:19998,master_hostname_2:19998,master_hostname_3:19998</value>
  </property>
</configuration>

$ ./bin/hadoop jar libexec/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.3.jar wordcount \
  -Dalluxio.user.file.writetype.default=CACHE_THROUGH \
  -libjars /<PATH_TO_ALLUXIO>/client/alluxio-2.9.5-client.jar \
  <INPUT FILES> <OUTPUT DIRECTORY>