conf/SystemML-config.xml.template

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<root>
   <!-- local fs tmp working directory-->
   <localtmpdir>/tmp/systemml</localtmpdir>

   <!-- hdfs tmp working directory--> 
   <scratch>scratch_space</scratch> 

   <!-- compiler optimization level, valid values: 0 | 1 | 2 | 3 | 4, default: 2 -->
   <optlevel>2</optlevel>  

   <!-- default number of reduce tasks per MR job, default: 2 x number of nodes -->
   <numreducers>10</numreducers> 
   
   <!-- override jvm reuse flag for specific MR jobs, valid values: true | false  -->
   <jvmreuse>false</jvmreuse> 

   <!-- default block dim for binary block files -->
   <defaultblocksize>1000</defaultblocksize> 

   <!-- run systemml control program as yarn appmaster, in case of MR1 always falls back to client, please disable for debug mode -->
   <dml.yarn.appmaster>false</dml.yarn.appmaster>

   <!-- maximum jvm heap size of the dml yarn appmaster in MB, the requested memory is 1.5x this parameter -->
   <dml.yarn.appmaster.mem>2048</dml.yarn.appmaster.mem>

   <!-- maximum jvm heap size of the map/reduce tasks in MB, the requested memory is 1.5x this parameter, negative values ignored  -->
   <dml.yarn.mapreduce.mem>2048</dml.yarn.mapreduce.mem>

   <!-- yarn application submission queue, relevant for default capacity scheduler -->
   <dml.yarn.app.queue>default</dml.yarn.app.queue>
   
   <!-- enables multi-threaded matrix multiplications in singlenode control program -->
   <cp.parallel.matrixmult>true</cp.parallel.matrixmult>
   
   <!-- enables multi-threaded read/write of text formats in singlenode control program -->
   <cp.parallel.textio>true</cp.parallel.textio>
</root>