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 <div class="subTitle">org.apache.sysds.runtime.controlprogram.parfor.stat</div>
 <h2 title="Class InfrastructureAnalyzer" class="title">Class InfrastructureAnalyzer</h2>
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 <pre>public class <span class="typeNameLabel">InfrastructureAnalyzer</span>
 extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
 <div class="block">Central place for analyzing and obtaining static infrastructure properties
  such as memory and number of logical processors.</div>
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 <caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Field and Description</th>
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 <tr class="altColor">
 <td class="colFirst"><code>static long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#DEFAULT_JVM_SIZE">DEFAULT_JVM_SIZE</a></span></code>&nbsp;</td>
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 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#MR_FRAMEWORK_NAME">MR_FRAMEWORK_NAME</a></span></code>&nbsp;</td>
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 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#MR_JOBTRACKER_ADDRESS">MR_JOBTRACKER_ADDRESS</a></span></code>&nbsp;</td>
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 <th class="colOne" scope="col">Constructor and Description</th>
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 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#InfrastructureAnalyzer--">InfrastructureAnalyzer</a></span>()</code>&nbsp;</td>
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 <td class="colFirst"><code>static long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#extractMaxMemoryOpt-java.lang.String-">extractMaxMemoryOpt</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;javaOpts)</code>&nbsp;</td>
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 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getCkMaxCP--">getCkMaxCP</a></span>()</code>
 <div class="block">Gets the maximum local parallelism constraint.</div>
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 <tr id="i2" class="altColor">
 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getCkMaxMR--">getCkMaxMR</a></span>()</code>
 <div class="block">Gets the maximum remote parallelism constraint</div>
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 <td class="colFirst"><code>static double</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getClusterUtilization-boolean-">getClusterUtilization</a></span>(boolean&nbsp;mapOnly)</code>
 <div class="block">Gets the fraction of running map/reduce tasks to existing
  map/reduce task slots.</div>
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 <tr id="i4" class="altColor">
 <td class="colFirst"><code>static long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getCmMax--">getCmMax</a></span>()</code>
 <div class="block">Gets the maximum memory constraint [in bytes].</div>
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 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>static long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getHDFSBlockSize--">getHDFSBlockSize</a></span>()</code>
 <div class="block">Gets the HDFS blocksize of the used cluster in bytes.</div>
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 <tr id="i6" class="altColor">
 <td class="colFirst"><code>static long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getLocalMaxMemory--">getLocalMaxMemory</a></span>()</code>
 <div class="block">Gets the maximum memory [in bytes] of the current JVM.</div>
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 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>static double</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getLocalMaxMemoryFraction--">getLocalMaxMemoryFraction</a></span>()</code>&nbsp;</td>
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 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getLocalParallelism--">getLocalParallelism</a></span>()</code>
 <div class="block">Gets the number of logical processors of the current node,
  including hyper-threading if enabled.</div>
 </td>
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 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getRemoteParallelMapTasks--">getRemoteParallelMapTasks</a></span>()</code>
 <div class="block">Gets the number of remote parallel map slots.</div>
 </td>
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 <tr id="i10" class="altColor">
 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getRemoteParallelNodes--">getRemoteParallelNodes</a></span>()</code>
 <div class="block">Gets the number of cluster nodes (number of tasktrackers).</div>
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 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#getRemoteParallelReduceTasks--">getRemoteParallelReduceTasks</a></span>()</code>
 <div class="block">Gets the total number of remote parallel reduce slots.</div>
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 <tr id="i12" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#isLocalMode--">isLocalMode</a></span>()</code>&nbsp;</td>
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 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#isLocalMode-org.apache.hadoop.mapred.JobConf-">isLocalMode</a></span>(org.apache.hadoop.mapred.JobConf&nbsp;job)</code>&nbsp;</td>
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 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#setLocalMaxMemory-long-">setLocalMaxMemory</a></span>(long&nbsp;localMem)</code>&nbsp;</td>
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 <tr id="i15" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#setMaxMemoryOpt-org.apache.hadoop.mapred.JobConf-java.lang.String-long-">setMaxMemoryOpt</a></span>(org.apache.hadoop.mapred.JobConf&nbsp;job,
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 <td class="colFirst"><code>static void</code></td>
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 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/sysds/runtime/controlprogram/parfor/stat/InfrastructureAnalyzer.html#setRemoteParallelReduceTasks-int-">setRemoteParallelReduceTasks</a></span>(int&nbsp;preduce)</code>&nbsp;</td>
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 <pre>public static&nbsp;int&nbsp;getLocalParallelism()</pre>
 <div class="block">Gets the number of logical processors of the current node,
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 <pre>public static&nbsp;int&nbsp;getRemoteParallelNodes()</pre>
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 <pre>public static&nbsp;int&nbsp;getRemoteParallelMapTasks()</pre>
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 <pre>public static&nbsp;int&nbsp;getRemoteParallelReduceTasks()</pre>
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 <pre>public static&nbsp;long&nbsp;getLocalMaxMemory()</pre>
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 <pre>public static&nbsp;int&nbsp;getCkMaxCP()</pre>
 <div class="block">Gets the maximum local parallelism constraint.</div>
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 <dd>maximum local parallelism constraint</dd>
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 <pre>public static&nbsp;int&nbsp;getCkMaxMR()</pre>
 <div class="block">Gets the maximum remote parallelism constraint</div>
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 <dd>maximum remote parallelism constraint</dd>
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 <pre>public static&nbsp;long&nbsp;getCmMax()</pre>
 <div class="block">Gets the maximum memory constraint [in bytes].</div>
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 <dd>maximum memory constraint</dd>
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 <pre>public static&nbsp;long&nbsp;getHDFSBlockSize()</pre>
 <div class="block">Gets the HDFS blocksize of the used cluster in bytes.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>HDFS block size</dd>
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 <pre>public static&nbsp;void&nbsp;setMaxMemoryOpt(org.apache.hadoop.mapred.JobConf&nbsp;job,
                                    <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
                                    long&nbsp;bytes)</pre>
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 <pre>public static&nbsp;double&nbsp;getClusterUtilization(boolean&nbsp;mapOnly)
                                     throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block">Gets the fraction of running map/reduce tasks to existing
  map/reduce task slots.

  NOTE: on YARN the number of slots is a spurious indicator
  because containers are purely scheduled based on memory.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>mapOnly</code> - if true, only look at map tasks</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>cluster utilization (current / capacity)</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if IOException occurs</dd>
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