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<div class="subTitle">org.apache.sysds.hops</div>
<h2 title="Class NaryOp" class="title">Class NaryOp</h2>
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<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<li><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">org.apache.sysds.hops.Hop</a></li>
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<li>org.apache.sysds.hops.NaryOp</li>
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<pre>public class <span class="typeNameLabel">NaryOp</span>
extends <a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></pre>
<div class="block">The NaryOp Hop allows for a variable number of operands. Functionality
such as 'printf' (overloaded into the existing print function) is an example
of an operation that potentially takes a variable number of operands.</div>
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<td class="colFirst"><code>protected <a href="../../../../org/apache/sysds/common/Types.OpOpN.html" title="enum in org.apache.sysds.common">Types.OpOpN</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#Z:Z_op">_op</a></span></code>&nbsp;</td>
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<h3>Fields inherited from class&nbsp;org.apache.sysds.hops.<a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></h3>
<code><a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_beginColumn">_beginColumn</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_beginLine">_beginLine</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_dataType">_dataType</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_dc">_dc</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_endColumn">_endColumn</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_endLine">_endLine</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_etype">_etype</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_etypeForced">_etypeForced</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_filename">_filename</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_ID">_ID</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_input">_input</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_memEstimate">_memEstimate</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_name">_name</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_outputEmptyBlocks">_outputEmptyBlocks</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_outputMemEstimate">_outputMemEstimate</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_parent">_parent</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_privacyConstraint">_privacyConstraint</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_processingMemEstimate">_processingMemEstimate</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_requiresCheckpoint">_requiresCheckpoint</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_requiresCompression">_requiresCompression</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_requiresLineageCaching">_requiresLineageCaching</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_requiresReblock">_requiresReblock</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_requiresRecompile">_requiresRecompile</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_spBroadcastMemEstimate">_spBroadcastMemEstimate</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_text">_text</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_updateType">_updateType</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_valueType">_valueType</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#Z:Z_visited">_visited</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#CPThreshold">CPThreshold</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#LOG">LOG</a></code></li>
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<th class="colLast" scope="col">Constructor and Description</th>
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<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#NaryOp--">NaryOp</a></span>()</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#NaryOp-java.lang.String-org.apache.sysds.common.Types.DataType-org.apache.sysds.common.Types.ValueType-org.apache.sysds.common.Types.OpOpN-org.apache.sysds.hops.Hop...-">NaryOp</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;name,
<a href="../../../../org/apache/sysds/common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dataType,
<a href="../../../../org/apache/sysds/common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;valueType,
<a href="../../../../org/apache/sysds/common/Types.OpOpN.html" title="enum in org.apache.sysds.common">Types.OpOpN</a>&nbsp;op,
<a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a>...&nbsp;inputs)</code>
<div class="block">NaryOp constructor.</div>
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<h3>Method Summary</h3>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#allowsAllExecTypes--">allowsAllExecTypes</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#checkArity--">checkArity</a></span>()</code>
<div class="block">MultipleOp may have any number of inputs.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#clone--">clone</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#compare-org.apache.sysds.hops.Hop-">compare</a></span>(<a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a>&nbsp;that)</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#computeIntermediateMemEstimate-long-long-long-">computeIntermediateMemEstimate</a></span>(long&nbsp;dim1,
long&nbsp;dim2,
long&nbsp;nnz)</code>
<div class="block">Computes the hop-specific intermediate memory estimate in bytes.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#computeMemEstimate-org.apache.sysds.hops.MemoTable-">computeMemEstimate</a></span>(<a href="../../../../org/apache/sysds/hops/MemoTable.html" title="class in org.apache.sysds.hops">MemoTable</a>&nbsp;memo)</code>
<div class="block">Computes the estimate of memory required to store the input/output of this hop in memory.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#computeOutputMemEstimate-long-long-long-">computeOutputMemEstimate</a></span>(long&nbsp;dim1,
long&nbsp;dim2,
long&nbsp;nnz)</code>
<div class="block">Computes the hop-specific output memory estimate in bytes.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/sysds/lops/Lop.html" title="class in org.apache.sysds.lops">Lop</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#constructLops--">constructLops</a></span>()</code>
<div class="block">Construct the corresponding Lops for this Hop</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/sysds/common/Types.OpOpN.html" title="enum in org.apache.sysds.common">Types.OpOpN</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#getOp--">getOp</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><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/hops/NaryOp.html#getOpString--">getOpString</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>protected <a href="../../../../org/apache/sysds/runtime/meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#inferOutputCharacteristics-org.apache.sysds.hops.MemoTable-">inferOutputCharacteristics</a></span>(<a href="../../../../org/apache/sysds/hops/MemoTable.html" title="class in org.apache.sysds.hops">MemoTable</a>&nbsp;memo)</code>
<div class="block">Computes the output matrix characteristics (rows, cols, nnz) based on worst-case output
and/or input estimates.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#isGPUEnabled--">isGPUEnabled</a></span>()</code>
<div class="block">In memory-based optimizer mode (see OptimizerUtils.isMemoryBasedOptLevel()),
the exectype is determined by checking this method as well as memory budget of this Hop.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>protected <a href="../../../../org/apache/sysds/lops/LopProperties.ExecType.html" title="enum in org.apache.sysds.lops">LopProperties.ExecType</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#optFindExecType--">optFindExecType</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/sysds/hops/NaryOp.html#refreshSizeInformation--">refreshSizeInformation</a></span>()</code>
<div class="block">Update the output size information for this hop.</div>
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<h3>Methods inherited from class&nbsp;org.apache.sysds.hops.<a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></h3>
<code><a href="../../../../org/apache/sysds/hops/Hop.html#addAllInputs-java.util.ArrayList-">addAllInputs</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#addInput-org.apache.sysds.hops.Hop-">addInput</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#areDimsBelowThreshold--">areDimsBelowThreshold</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#checkAndSetForcedPlatform--">checkAndSetForcedPlatform</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#checkAndSetInvalidCPDimsAndSize--">checkAndSetInvalidCPDimsAndSize</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#clearMemEstimate--">clearMemEstimate</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#clone-org.apache.sysds.hops.Hop-boolean-">clone</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#colsKnown--">colsKnown</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#computeBoundsInformation-org.apache.sysds.hops.Hop-">computeBoundsInformation</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#computeBoundsInformation-org.apache.sysds.hops.Hop-org.apache.sysds.runtime.controlprogram.LocalVariableMap-">computeBoundsInformation</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#computeBoundsInformation-org.apache.sysds.hops.Hop-org.apache.sysds.runtime.controlprogram.LocalVariableMap-java.util.HashMap-">computeBoundsInformation</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#computeDimParameterInformation-org.apache.sysds.hops.Hop-org.apache.sysds.hops.MemoTable-">computeDimParameterInformation</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#computeSizeInformation-org.apache.sysds.hops.Hop-">computeSizeInformation</a>, <a href="../../../../org/apache/sysds/hops/Hop.html#computeSizeInformation-org.apache.sysds.hops.Hop-org.apache.sysds.runtime.controlprogram.LocalVariableMap-">computeSizeInformation</a>, <a 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<code><a href="../../../../org/apache/sysds/parser/ParseInfo.html#ctxAndFilenameToParseInfo-org.antlr.v4.runtime.ParserRuleContext-java.lang.String-">ctxAndFilenameToParseInfo</a></code></li>
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<h4>_op</h4>
<pre>protected&nbsp;<a href="../../../../org/apache/sysds/common/Types.OpOpN.html" title="enum in org.apache.sysds.common">Types.OpOpN</a> _op</pre>
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<h3>Constructor Detail</h3>
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<pre>protected&nbsp;NaryOp()</pre>
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<h4>NaryOp</h4>
<pre>public&nbsp;NaryOp(<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;name,
<a href="../../../../org/apache/sysds/common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dataType,
<a href="../../../../org/apache/sysds/common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;valueType,
<a href="../../../../org/apache/sysds/common/Types.OpOpN.html" title="enum in org.apache.sysds.common">Types.OpOpN</a>&nbsp;op,
<a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a>...&nbsp;inputs)</pre>
<div class="block">NaryOp constructor.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - the target name, typically set by the DMLTranslator when
constructing Hops. (For example, 'parsertemp1'.)</dd>
<dd><code>dataType</code> - the target data type (SCALAR for printf)</dd>
<dd><code>valueType</code> - the target value type (STRING for printf)</dd>
<dd><code>op</code> - the operation type (such as PRINTF)</dd>
<dd><code>inputs</code> - a variable number of input Hops</dd>
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<pre>public&nbsp;void&nbsp;checkArity()</pre>
<div class="block">MultipleOp may have any number of inputs.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#checkArity--">checkArity</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
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<pre>public&nbsp;<a href="../../../../org/apache/sysds/common/Types.OpOpN.html" title="enum in org.apache.sysds.common">Types.OpOpN</a>&nbsp;getOp()</pre>
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<a name="getOpString--">
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<h4>getOpString</h4>
<pre>public&nbsp;<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;getOpString()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#getOpString--">getOpString</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
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<pre>public&nbsp;boolean&nbsp;isGPUEnabled()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html#isGPUEnabled--">Hop</a></code></span></div>
<div class="block">In memory-based optimizer mode (see OptimizerUtils.isMemoryBasedOptLevel()),
the exectype is determined by checking this method as well as memory budget of this Hop.
Please see findExecTypeByMemEstimate for more detail.
This method is necessary because not all operator are supported efficiently
on GPU (for example: operations on frames and scalar as well as operations such as table).</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#isGPUEnabled--">isGPUEnabled</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the Hop is eligible for GPU Exectype.</dd>
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<h4>constructLops</h4>
<pre>public&nbsp;<a href="../../../../org/apache/sysds/lops/Lop.html" title="class in org.apache.sysds.lops">Lop</a>&nbsp;constructLops()</pre>
<div class="block">Construct the corresponding Lops for this Hop</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#constructLops--">constructLops</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
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<pre>public&nbsp;boolean&nbsp;allowsAllExecTypes()</pre>
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<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#allowsAllExecTypes--">allowsAllExecTypes</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
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<h4>computeMemEstimate</h4>
<pre>public&nbsp;void&nbsp;computeMemEstimate(<a href="../../../../org/apache/sysds/hops/MemoTable.html" title="class in org.apache.sysds.hops">MemoTable</a>&nbsp;memo)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html#computeMemEstimate-org.apache.sysds.hops.MemoTable-">Hop</a></code></span></div>
<div class="block">Computes the estimate of memory required to store the input/output of this hop in memory.
This is the default implementation (orchestration of hop-specific implementation)
that should suffice for most hops. If a hop requires more control, this method should
be overwritten with awareness of (1) output estimates, and (2) propagation of worst-case
matrix characteristics (dimensions, sparsity).
TODO remove memo table and, on constructor refresh, inference in refresh, single compute mem,
maybe general computeMemEstimate, flags to indicate if estimate or not.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#computeMemEstimate-org.apache.sysds.hops.MemoTable-">computeMemEstimate</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>memo</code> - memory table</dd>
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<pre>protected&nbsp;double&nbsp;computeOutputMemEstimate(long&nbsp;dim1,
long&nbsp;dim2,
long&nbsp;nnz)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html#computeOutputMemEstimate-long-long-long-">Hop</a></code></span></div>
<div class="block">Computes the hop-specific output memory estimate in bytes. Should be 0 if not
applicable.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#computeOutputMemEstimate-long-long-long-">computeOutputMemEstimate</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>dim1</code> - dimension 1</dd>
<dd><code>dim2</code> - dimension 2</dd>
<dd><code>nnz</code> - number of non-zeros</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>memory estimate</dd>
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<h4>optFindExecType</h4>
<pre>protected&nbsp;<a href="../../../../org/apache/sysds/lops/LopProperties.ExecType.html" title="enum in org.apache.sysds.lops">LopProperties.ExecType</a>&nbsp;optFindExecType()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#optFindExecType--">optFindExecType</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
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<h4>computeIntermediateMemEstimate</h4>
<pre>protected&nbsp;double&nbsp;computeIntermediateMemEstimate(long&nbsp;dim1,
long&nbsp;dim2,
long&nbsp;nnz)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html#computeIntermediateMemEstimate-long-long-long-">Hop</a></code></span></div>
<div class="block">Computes the hop-specific intermediate memory estimate in bytes. Should be 0 if not
applicable.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#computeIntermediateMemEstimate-long-long-long-">computeIntermediateMemEstimate</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>dim1</code> - dimension 1</dd>
<dd><code>dim2</code> - dimension 2</dd>
<dd><code>nnz</code> - number of non-zeros</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>memory estimate</dd>
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<h4>inferOutputCharacteristics</h4>
<pre>protected&nbsp;<a href="../../../../org/apache/sysds/runtime/meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;inferOutputCharacteristics(<a href="../../../../org/apache/sysds/hops/MemoTable.html" title="class in org.apache.sysds.hops">MemoTable</a>&nbsp;memo)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html#inferOutputCharacteristics-org.apache.sysds.hops.MemoTable-">Hop</a></code></span></div>
<div class="block">Computes the output matrix characteristics (rows, cols, nnz) based on worst-case output
and/or input estimates. Should return null if dimensions are unknown.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#inferOutputCharacteristics-org.apache.sysds.hops.MemoTable-">inferOutputCharacteristics</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>memo</code> - memory table</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>output characteristics</dd>
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<h4>refreshSizeInformation</h4>
<pre>public&nbsp;void&nbsp;refreshSizeInformation()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html#refreshSizeInformation--">Hop</a></code></span></div>
<div class="block">Update the output size information for this hop.</div>
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<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#refreshSizeInformation--">refreshSizeInformation</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
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<h4>clone</h4>
<pre>public&nbsp;<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>&nbsp;clone()
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/CloneNotSupportedException.html?is-external=true" title="class or interface in java.lang">CloneNotSupportedException</a></pre>
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<dd><code><a href="../../../../org/apache/sysds/hops/Hop.html#clone--">clone</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/CloneNotSupportedException.html?is-external=true" title="class or interface in java.lang">CloneNotSupportedException</a></code></dd>
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<h4>compare</h4>
<pre>public&nbsp;boolean&nbsp;compare(<a href="../../../../org/apache/sysds/hops/Hop.html" title="class in org.apache.sysds.hops">Hop</a>&nbsp;that)</pre>
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