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pj2/doc/edu/rit/gpu/GpuMatrix.html
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<div class="subTitle">edu.rit.gpu</div>
<h2 title="Class GpuMatrix" class="title">Class GpuMatrix</h2>
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<ul class="inheritance">
<li><a href="../../../edu/rit/gpu/GpuVbl.html" title="class in edu.rit.gpu">edu.rit.gpu.GpuVbl</a></li>
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<ul class="inheritance">
<li>edu.rit.gpu.GpuMatrix</li>
</ul>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../edu/rit/gpu/GpuByteMatrix.html" title="class in edu.rit.gpu">GpuByteMatrix</a>, <a href="../../../edu/rit/gpu/GpuDoubleMatrix.html" title="class in edu.rit.gpu">GpuDoubleMatrix</a>, <a href="../../../edu/rit/gpu/GpuFloatMatrix.html" title="class in edu.rit.gpu">GpuFloatMatrix</a>, <a href="../../../edu/rit/gpu/GpuIntMatrix.html" title="class in edu.rit.gpu">GpuIntMatrix</a>, <a href="../../../edu/rit/gpu/GpuLongMatrix.html" title="class in edu.rit.gpu">GpuLongMatrix</a>, <a href="../../../edu/rit/gpu/GpuShortMatrix.html" title="class in edu.rit.gpu">GpuShortMatrix</a></dd>
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<br>
<pre>public abstract class <span class="strong">GpuMatrix</span>
extends <a href="../../../edu/rit/gpu/GpuVbl.html" title="class in edu.rit.gpu">GpuVbl</a></pre>
<div class="block">Class GpuMatrix is the abstract base class for a GPU matrix variable. This is
a two-dimensional array of data stored in the GPU's memory and mirrored in
the CPU's memory. Construct an instance of a subclass of class GpuMatrix by
calling a factory method on a <a href="../../../edu/rit/gpu/Gpu.html" title="class in edu.rit.gpu">Gpu</a> object.
<P>
Class GpuMatrix supports mirroring all of the GPU's data matrix in the CPU's
memory, mirroring only a portion of the GPU's data matrix in the CPU's
memory, or mirroring none of the GPU's data matrix. Class GpuMatrix provides
operations for copying all or portions of the data matrix from the CPU to the
GPU or from the GPU to the CPU.
<P>
In the GPU memory, the matrix is implemented as a pointer to an array of
<I>R</I> row pointers, where <I>R</I> is the number of rows in the matrix.
Each row pointer points to an array of <I>C</I> data elements, where <I>C</I>
is the number of columns in the matrix.</div>
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<h3>Method Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../edu/rit/gpu/GpuMatrix.html#cols()">cols</a></strong>()</code>
<div class="block">Returns the number of columns in the GPU matrix in the GPU device's
memory.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../edu/rit/gpu/GpuMatrix.html#cpuCols()">cpuCols</a></strong>()</code>
<div class="block">Returns the number of columns in the GPU matrix mirrored in the host
CPU's memory.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../edu/rit/gpu/GpuMatrix.html#cpuRows()">cpuRows</a></strong>()</code>
<div class="block">Returns the number of rows in the GPU matrix mirrored in the host CPU's
memory.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../edu/rit/gpu/GpuMatrix.html#devToHost()">devToHost</a></strong>()</code>
<div class="block">Copy this GPU matrix from the GPU device's memory to the host CPU's
memory.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../edu/rit/gpu/GpuMatrix.html#devToHost(int, int)">devToHost</a></strong>(int&nbsp;rowlen,
int&nbsp;collen)</code>
<div class="block">Copy the initial portion of this GPU matrix from the GPU device's memory
to the host CPU's memory.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><strong><a href="../../../edu/rit/gpu/GpuMatrix.html#devToHost(int, int, int, int, int, int)">devToHost</a></strong>(int&nbsp;dstrow,
int&nbsp;dstcol,
int&nbsp;srcrow,
int&nbsp;srccol,
int&nbsp;rowlen,
int&nbsp;collen)</code>
<div class="block">Copy the given portion of this GPU matrix from the GPU device's memory to
the host CPU's memory.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../edu/rit/gpu/GpuMatrix.html#hostToDev()">hostToDev</a></strong>()</code>
<div class="block">Copy this GPU matrix from the host CPU's memory to the GPU device's
memory.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../edu/rit/gpu/GpuMatrix.html#hostToDev(int, int)">hostToDev</a></strong>(int&nbsp;rowlen,
int&nbsp;collen)</code>
<div class="block">Copy the initial portion of this GPU matrix from the host CPU's memory to
the GPU device's memory.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><strong><a href="../../../edu/rit/gpu/GpuMatrix.html#hostToDev(int, int, int, int, int, int)">hostToDev</a></strong>(int&nbsp;dstrow,
int&nbsp;dstcol,
int&nbsp;srcrow,
int&nbsp;srccol,
int&nbsp;rowlen,
int&nbsp;collen)</code>
<div class="block">Copy the given portion of this GPU matrix from the host CPU's memory to
the GPU device's memory.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../edu/rit/gpu/GpuMatrix.html#rows()">rows</a></strong>()</code>
<div class="block">Returns the number of rows in the GPU matrix in the GPU device's memory.</div>
</td>
</tr>
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<h3>Methods inherited from class&nbsp;edu.rit.gpu.<a href="../../../edu/rit/gpu/GpuVbl.html" title="class in edu.rit.gpu">GpuVbl</a></h3>
<code><a href="../../../edu/rit/gpu/GpuVbl.html#finalize()">finalize</a>, <a href="../../../edu/rit/gpu/GpuVbl.html#free()">free</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li>
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<h3>Method Detail</h3>
<a name="rows()">
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<h4>rows</h4>
<pre>public&nbsp;int&nbsp;rows()</pre>
<div class="block">Returns the number of rows in the GPU matrix in the GPU device's memory.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Number of rows in the GPU matrix.</dd></dl>
</li>
</ul>
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<h4>cols</h4>
<pre>public&nbsp;int&nbsp;cols()</pre>
<div class="block">Returns the number of columns in the GPU matrix in the GPU device's
memory.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Number of columns in the GPU matrix.</dd></dl>
</li>
</ul>
<a name="cpuRows()">
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<h4>cpuRows</h4>
<pre>public&nbsp;int&nbsp;cpuRows()</pre>
<div class="block">Returns the number of rows in the GPU matrix mirrored in the host CPU's
memory.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Number of rows in the CPU matrix.</dd></dl>
</li>
</ul>
<a name="cpuCols()">
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<h4>cpuCols</h4>
<pre>public&nbsp;int&nbsp;cpuCols()</pre>
<div class="block">Returns the number of columns in the GPU matrix mirrored in the host
CPU's memory.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Number of columns in the CPU matrix.</dd></dl>
</li>
</ul>
<a name="hostToDev()">
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<h4>hostToDev</h4>
<pre>public&nbsp;void&nbsp;hostToDev()</pre>
<div class="block">Copy this GPU matrix from the host CPU's memory to the GPU device's
memory. This is equivalent to the call
<TT>hostToDev(0,0,0,0,cpuRows(),cpuCols())</TT>.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../edu/rit/gpu/GpuVbl.html#hostToDev()">hostToDev</a></code>&nbsp;in class&nbsp;<code><a href="../../../edu/rit/gpu/GpuVbl.html" title="class in edu.rit.gpu">GpuVbl</a></code></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../edu/rit/gpu/GpuException.html" title="class in edu.rit.gpu">GpuException</a></code> - (unchecked exception) Thrown if a GPU error occurred.</dd></dl>
</li>
</ul>
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<h4>hostToDev</h4>
<pre>public&nbsp;void&nbsp;hostToDev(int&nbsp;rowlen,
int&nbsp;collen)</pre>
<div class="block">Copy the initial portion of this GPU matrix from the host CPU's memory to
the GPU device's memory. This is equivalent to the call
<TT>hostToDev(0,0,0,0,rowlen,collen)</TT>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>rowlen</code> - Number of rows to copy.</dd><dd><code>collen</code> - Number of columns to copy.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - (unchecked exception) Thrown if <TT>rowlen</TT> &lt; 0,
<TT>rowlen</TT> &gt; <TT>cpuRows()</TT>, <TT>collen</TT> &lt; 0, or
<TT>collen</TT> &gt; <TT>cpuCols()</TT>.</dd>
<dd><code><a href="../../../edu/rit/gpu/GpuException.html" title="class in edu.rit.gpu">GpuException</a></code> - (unchecked exception) Thrown if a GPU error occurred.</dd></dl>
</li>
</ul>
<a name="hostToDev(int, int, int, int, int, int)">
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<h4>hostToDev</h4>
<pre>public abstract&nbsp;void&nbsp;hostToDev(int&nbsp;dstrow,
int&nbsp;dstcol,
int&nbsp;srcrow,
int&nbsp;srccol,
int&nbsp;rowlen,
int&nbsp;collen)</pre>
<div class="block">Copy the given portion of this GPU matrix from the host CPU's memory to
the GPU device's memory. <TT>rowlen</TT>&times;<TT>collen</TT> elements
starting at indexes <TT>[srcrow][srccol]</TT> in the CPU matrix are
copied to the GPU matrix starting at indexes <TT>[dstrow][dstcol]</TT>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>dstrow</code> - GPU matrix starting row index.</dd><dd><code>dstcol</code> - GPU matrix starting column index.</dd><dd><code>srcrow</code> - CPU matrix starting row index.</dd><dd><code>srccol</code> - CPU matrix starting column index.</dd><dd><code>rowlen</code> - Number of rows to copy.</dd><dd><code>collen</code> - Number of columns to copy.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - (unchecked exception) Thrown if <TT>dstrow</TT> &lt; 0,
<TT>dstcol</TT> &lt; 0, <TT>srcrow</TT> &lt; 0, <TT>srccol</TT> &lt;
0, <TT>rowlen</TT> &lt; 0, <TT>collen</TT> &lt; 0,
<TT>dstrow+rowlen</TT> &gt; <TT>rows()</TT>, <TT>dstcol+collen</TT>
&gt; <TT>cols()</TT>, <TT>srcrow+rowlen</TT> &gt; <TT>cpuRows()</TT>,
or <TT>srccol+collen</TT> &gt; <TT>cpuCols()</TT>.</dd>
<dd><code><a href="../../../edu/rit/gpu/GpuException.html" title="class in edu.rit.gpu">GpuException</a></code> - (unchecked exception) Thrown if a GPU error occurred.</dd></dl>
</li>
</ul>
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<h4>devToHost</h4>
<pre>public&nbsp;void&nbsp;devToHost()</pre>
<div class="block">Copy this GPU matrix from the GPU device's memory to the host CPU's
memory. This is equivalent to the call
<TT>devToHost(0,0,0,0,cpuRows(),cpuCols())</TT>.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../edu/rit/gpu/GpuVbl.html#devToHost()">devToHost</a></code>&nbsp;in class&nbsp;<code><a href="../../../edu/rit/gpu/GpuVbl.html" title="class in edu.rit.gpu">GpuVbl</a></code></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../edu/rit/gpu/GpuException.html" title="class in edu.rit.gpu">GpuException</a></code> - (unchecked exception) Thrown if a GPU error occurred.</dd></dl>
</li>
</ul>
<a name="devToHost(int, int)">
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<ul class="blockList">
<li class="blockList">
<h4>devToHost</h4>
<pre>public&nbsp;void&nbsp;devToHost(int&nbsp;rowlen,
int&nbsp;collen)</pre>
<div class="block">Copy the initial portion of this GPU matrix from the GPU device's memory
to the host CPU's memory. This is equivalent to the call
<TT>devToHost(0,0,0,0,rowlen,collen)</TT>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>rowlen</code> - Number of rows to copy.</dd><dd><code>collen</code> - Number of columns to copy.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - (unchecked exception) Thrown if <TT>rowlen</TT> &lt; 0,
<TT>rowlen</TT> &gt; <TT>cpuRows()</TT>, <TT>collen</TT> &lt; 0, or
<TT>collen</TT> &gt; <TT>cpuCols()</TT>.</dd>
<dd><code><a href="../../../edu/rit/gpu/GpuException.html" title="class in edu.rit.gpu">GpuException</a></code> - (unchecked exception) Thrown if a GPU error occurred.</dd></dl>
</li>
</ul>
<a name="devToHost(int, int, int, int, int, int)">
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<h4>devToHost</h4>
<pre>public abstract&nbsp;void&nbsp;devToHost(int&nbsp;dstrow,
int&nbsp;dstcol,
int&nbsp;srcrow,
int&nbsp;srccol,
int&nbsp;rowlen,
int&nbsp;collen)</pre>
<div class="block">Copy the given portion of this GPU matrix from the GPU device's memory to
the host CPU's memory. <TT>rowlen</TT>&times;<TT>collen</TT> elements
starting at indexes <TT>[srcrow][srccol]</TT> in the GPU matrix are
copied to the CPU matrix starting at indexes <TT>[dstrow][dstcol]</TT>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>dstrow</code> - CPU matrix starting row index.</dd><dd><code>dstcol</code> - CPU matrix starting column index.</dd><dd><code>srcrow</code> - GPU matrix starting row index.</dd><dd><code>srccol</code> - GPU matrix starting column index.</dd><dd><code>rowlen</code> - Number of rows to copy.</dd><dd><code>collen</code> - Number of columns to copy.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - (unchecked exception) Thrown if <TT>dstrow</TT> &lt; 0,
<TT>dstcol</TT> &lt; 0, <TT>srcrow</TT> &lt; 0, <TT>srccol</TT> &lt;
0, <TT>rowlen</TT> &lt; 0, <TT>collen</TT> &lt; 0,
<TT>dstrow+rowlen</TT> &gt; <TT>cpuRows()</TT>,
<TT>dstcol+collen</TT> &gt; <TT>cpuCols()</TT>,
<TT>srcrow+rowlen</TT> &gt; <TT>rows()</TT>, or
<TT>srccol+collen</TT> &gt; <TT>cols()</TT>.</dd>
<dd><code><a href="../../../edu/rit/gpu/GpuException.html" title="class in edu.rit.gpu">GpuException</a></code> - (unchecked exception) Thrown if a GPU error occurred.</dd></dl>
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