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<li class="navelem"><a class="el" href="dir_938ab0ecf10b8b860ff766c820f665fd.html">mlx</a></li><li class="navelem"><a class="el" href="dir_1d446c9bd3c99228254c9484e0bc5c06.html">backend</a></li><li class="navelem"><a class="el" href="dir_d0c977ea65824390717cdb7efc36c157.html">metal</a></li><li class="navelem"><a class="el" href="dir_70a37effa88bcbd6b791977fa1e64356.html">kernels</a></li><li class="navelem"><a class="el" href="dir_f60cd69d27fd3faa641c79056fff0e2d.html">reduction</a></li> </ul>
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<div class="header">
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<a href="#func-members">Functions</a> </div>
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<div class="headertitle"><div class="title">reduce_row.h File Reference</div></div>
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</div><!--header-->
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<div class="contents">
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<p><a href="reduce__row_8h_source.html">Go to the source code of this file.</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:a9d5e0049a2276f43702fc6907e74a35f" id="r_a9d5e0049a2276f43702fc6907e74a35f"><td class="memTemplParams" colspan="2">template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS, int N_WRITES = REDUCE_N_WRITES> </td></tr>
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<tr class="memitem:a9d5e0049a2276f43702fc6907e74a35f"><td class="memTemplItemLeft" align="right" valign="top">METAL_FUNC void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#a9d5e0049a2276f43702fc6907e74a35f">per_thread_row_reduce</a> (thread U totals[N_WRITES], const device T *inputs[N_WRITES], int blocks, int extra, uint lsize_x, uint lid_x)</td></tr>
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<tr class="memdesc:a9d5e0049a2276f43702fc6907e74a35f"><td class="mdescLeft"> </td><td class="mdescRight">The thread group collaboratively reduces across the rows with bounds checking. <br /></td></tr>
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<tr class="separator:a9d5e0049a2276f43702fc6907e74a35f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a045ec34228e77c79ec67d11c39ff097a" id="r_a045ec34228e77c79ec67d11c39ff097a"><td class="memTemplParams" colspan="2">template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS, int N_WRITES = REDUCE_N_WRITES> </td></tr>
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<tr class="memitem:a045ec34228e77c79ec67d11c39ff097a"><td class="memTemplItemLeft" align="right" valign="top">METAL_FUNC void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#a045ec34228e77c79ec67d11c39ff097a">per_thread_row_reduce</a> (thread U totals[N_WRITES], const device T *in, const constant size_t &reduction_size, int blocks, int extra, uint lsize_x, uint lid_x)</td></tr>
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<tr class="memdesc:a045ec34228e77c79ec67d11c39ff097a"><td class="mdescLeft"> </td><td class="mdescRight">Consecutive rows in a contiguous array. <br /></td></tr>
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<tr class="separator:a045ec34228e77c79ec67d11c39ff097a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a4d00c44e5f4a13be529ff8b664a0a342" id="r_a4d00c44e5f4a13be529ff8b664a0a342"><td class="memTemplParams" colspan="2">template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS, int N_WRITES = REDUCE_N_WRITES> </td></tr>
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<tr class="memitem:a4d00c44e5f4a13be529ff8b664a0a342"><td class="memTemplItemLeft" align="right" valign="top">METAL_FUNC void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#a4d00c44e5f4a13be529ff8b664a0a342">per_thread_row_reduce</a> (thread U totals[N_WRITES], const device T *in, const size_t row_idx, int blocks, int extra, const constant int *shape, const constant size_t *strides, const constant int &ndim, uint lsize_x, uint lid_x)</td></tr>
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<tr class="memdesc:a4d00c44e5f4a13be529ff8b664a0a342"><td class="mdescLeft"> </td><td class="mdescRight">Consecutive rows in an arbitrarily ordered array. <br /></td></tr>
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<tr class="separator:a4d00c44e5f4a13be529ff8b664a0a342"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aa146bb611069fd2892f03714fd1cc3cf" id="r_aa146bb611069fd2892f03714fd1cc3cf"><td class="memTemplParams" colspan="2">template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS, int N_WRITES = REDUCE_N_WRITES> </td></tr>
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<tr class="memitem:aa146bb611069fd2892f03714fd1cc3cf"><td class="memTemplItemLeft" align="right" valign="top">METAL_FUNC void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#aa146bb611069fd2892f03714fd1cc3cf">threadgroup_reduce</a> (thread U totals[N_WRITES], threadgroup U *shared_vals, uint3 lid, uint simd_lane_id, uint simd_per_group, uint simd_group_id)</td></tr>
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<tr class="memdesc:aa146bb611069fd2892f03714fd1cc3cf"><td class="mdescLeft"> </td><td class="mdescRight">Reduce within the threadgroup. <br /></td></tr>
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<tr class="separator:aa146bb611069fd2892f03714fd1cc3cf"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:afd80a25fa84e6cc884dcc8698859ade1" id="r_afd80a25fa84e6cc884dcc8698859ade1"><td class="memTemplParams" colspan="2">template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS> </td></tr>
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<tr class="memitem:afd80a25fa84e6cc884dcc8698859ade1"><td class="memTemplItemLeft" align="right" valign="top">METAL_FUNC void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#afd80a25fa84e6cc884dcc8698859ade1">thread_reduce</a> (thread U &total, const device T *row, int blocks, int extra)</td></tr>
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<tr class="separator:afd80a25fa84e6cc884dcc8698859ade1"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a27e75312086e31f6bd1bbf4b366679da" id="r_a27e75312086e31f6bd1bbf4b366679da"><td class="memTemplParams" colspan="2">template<typename T , typename U , typename Op , int NDIMS = 0, int N_READS = REDUCE_N_READS> </td></tr>
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<tr class="memitem:a27e75312086e31f6bd1bbf4b366679da"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#a27e75312086e31f6bd1bbf4b366679da">row_reduce_small</a> (const device T *in, device U *out, const constant size_t &row_size, const constant size_t &non_row_reductions, const constant int *shape, const constant size_t *strides, const constant int &ndim, const constant int *reduce_shape, const constant size_t *reduce_strides, const constant int &reduce_ndim, uint simd_lane_id, uint3 gid, uint3 gsize, uint3 tid, uint3 tsize)</td></tr>
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<tr class="separator:a27e75312086e31f6bd1bbf4b366679da"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac01d30987668930c8b38900e47b8308b" id="r_ac01d30987668930c8b38900e47b8308b"><td class="memTemplParams" colspan="2">template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS, int N_WRITES = REDUCE_N_WRITES> </td></tr>
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<tr class="memitem:ac01d30987668930c8b38900e47b8308b"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#ac01d30987668930c8b38900e47b8308b">row_reduce_simple</a> (const device T *in, device U *out, const constant size_t &reduction_size, const constant size_t &out_size, uint3 gid, uint3 gsize, uint3 lid, uint3 lsize, uint simd_lane_id, uint simd_per_group, uint simd_group_id)</td></tr>
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<tr class="separator:ac01d30987668930c8b38900e47b8308b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad98332d74a6824aa7499df3e2f2246ae" id="r_ad98332d74a6824aa7499df3e2f2246ae"><td class="memTemplParams" colspan="2">template<typename T , typename U , typename Op , int NDIMS = 0, int N_READS = REDUCE_N_READS> </td></tr>
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<tr class="memitem:ad98332d74a6824aa7499df3e2f2246ae"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#ad98332d74a6824aa7499df3e2f2246ae">row_reduce_looped</a> (const device T *in, device U *out, const constant size_t &row_size, const constant size_t &non_row_reductions, const constant int *shape, const constant size_t *strides, const constant int &ndim, const constant int *reduce_shape, const constant size_t *reduce_strides, const constant int &reduce_ndim, uint3 gid, uint3 gsize, uint3 lid, uint3 lsize, uint simd_lane_id, uint simd_per_group, uint simd_group_id)</td></tr>
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<tr class="separator:ad98332d74a6824aa7499df3e2f2246ae"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<h2 class="groupheader">Function Documentation</h2>
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<a id="a045ec34228e77c79ec67d11c39ff097a" name="a045ec34228e77c79ec67d11c39ff097a"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a045ec34228e77c79ec67d11c39ff097a">◆ </a></span>per_thread_row_reduce() <span class="overload">[1/3]</span></h2>
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<div class="memitem">
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<div class="memproto">
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<div class="memtemplate">
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template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS, int N_WRITES = REDUCE_N_WRITES> </div>
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<table class="memname">
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<tr>
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<td class="memname">METAL_FUNC void per_thread_row_reduce </td>
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<td>(</td>
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<td class="paramtype">thread U</td> <td class="paramname"><span class="paramname"><em>totals</em>[N_WRITES], </span></td>
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<td class="paramtype">const device T *</td> <td class="paramname"><span class="paramname"><em>in</em>, </span></td>
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<td class="paramtype">const constant size_t &</td> <td class="paramname"><span class="paramname"><em>reduction_size</em>, </span></td>
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<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>blocks</em>, </span></td>
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<td class="paramkey"></td>
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<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>extra</em>, </span></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>lsize_x</em>, </span></td>
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<td class="paramkey"></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>lid_x</em></span> )</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Consecutive rows in a contiguous array. </p>
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</div>
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</div>
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<a id="a4d00c44e5f4a13be529ff8b664a0a342" name="a4d00c44e5f4a13be529ff8b664a0a342"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a4d00c44e5f4a13be529ff8b664a0a342">◆ </a></span>per_thread_row_reduce() <span class="overload">[2/3]</span></h2>
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template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS, int N_WRITES = REDUCE_N_WRITES> </div>
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<table class="memname">
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<tr>
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<td class="memname">METAL_FUNC void per_thread_row_reduce </td>
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<td>(</td>
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<td class="paramtype">thread U</td> <td class="paramname"><span class="paramname"><em>totals</em>[N_WRITES], </span></td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const device T *</td> <td class="paramname"><span class="paramname"><em>in</em>, </span></td>
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<td class="paramkey"></td>
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<td class="paramtype">const size_t</td> <td class="paramname"><span class="paramname"><em>row_idx</em>, </span></td>
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<td class="paramkey"></td>
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<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>blocks</em>, </span></td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>extra</em>, </span></td>
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<td class="paramkey"></td>
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<td class="paramtype">const constant int *</td> <td class="paramname"><span class="paramname"><em>shape</em>, </span></td>
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<td class="paramtype">const constant size_t *</td> <td class="paramname"><span class="paramname"><em>strides</em>, </span></td>
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<td class="paramtype">const constant int &</td> <td class="paramname"><span class="paramname"><em>ndim</em>, </span></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>lsize_x</em>, </span></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>lid_x</em></span> )</td>
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</table>
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</div><div class="memdoc">
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<p>Consecutive rows in an arbitrarily ordered array. </p>
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</div>
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<a id="a9d5e0049a2276f43702fc6907e74a35f" name="a9d5e0049a2276f43702fc6907e74a35f"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a9d5e0049a2276f43702fc6907e74a35f">◆ </a></span>per_thread_row_reduce() <span class="overload">[3/3]</span></h2>
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template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS, int N_WRITES = REDUCE_N_WRITES> </div>
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<table class="memname">
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<tr>
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<td class="memname">METAL_FUNC void per_thread_row_reduce </td>
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<td>(</td>
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<td class="paramtype">thread U</td> <td class="paramname"><span class="paramname"><em>totals</em>[N_WRITES], </span></td>
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<td class="paramtype">const device T *</td> <td class="paramname"><span class="paramname"><em>inputs</em>[N_WRITES], </span></td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>blocks</em>, </span></td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>extra</em>, </span></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>lsize_x</em>, </span></td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>lid_x</em></span> )</td>
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</table>
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</div><div class="memdoc">
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<p>The thread group collaboratively reduces across the rows with bounds checking. </p>
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<p>In the end each thread holds a part of the reduction. </p>
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</div>
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</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ad98332d74a6824aa7499df3e2f2246ae">◆ </a></span>row_reduce_looped()</h2>
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<div class="memitem">
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<div class="memproto">
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<div class="memtemplate">
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template<typename T , typename U , typename Op , int NDIMS = 0, int N_READS = REDUCE_N_READS> </div>
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<table class="memname">
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<tr>
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<td class="memname">void row_reduce_looped </td>
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<td>(</td>
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<td class="paramtype">const device T *</td> <td class="paramname"><span class="paramname"><em>in</em>, </span></td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">device U *</td> <td class="paramname"><span class="paramname"><em>out</em>, </span></td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant size_t &</td> <td class="paramname"><span class="paramname"><em>row_size</em>, </span></td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant size_t &</td> <td class="paramname"><span class="paramname"><em>non_row_reductions</em>, </span></td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant int *</td> <td class="paramname"><span class="paramname"><em>shape</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant size_t *</td> <td class="paramname"><span class="paramname"><em>strides</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant int &</td> <td class="paramname"><span class="paramname"><em>ndim</em>, </span></td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant int *</td> <td class="paramname"><span class="paramname"><em>reduce_shape</em>, </span></td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant size_t *</td> <td class="paramname"><span class="paramname"><em>reduce_strides</em>, </span></td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant int &</td> <td class="paramname"><span class="paramname"><em>reduce_ndim</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>gid</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>gsize</em>, </span></td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>lid</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>lsize</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>simd_lane_id</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>simd_per_group</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>simd_group_id</em></span> )</td>
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</tr>
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</table>
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</div><div class="memdoc">
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</div>
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<a id="ac01d30987668930c8b38900e47b8308b" name="ac01d30987668930c8b38900e47b8308b"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ac01d30987668930c8b38900e47b8308b">◆ </a></span>row_reduce_simple()</h2>
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<div class="memitem">
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<div class="memproto">
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<div class="memtemplate">
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template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS, int N_WRITES = REDUCE_N_WRITES> </div>
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<table class="memname">
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<tr>
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<td class="memname">void row_reduce_simple </td>
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<td>(</td>
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<td class="paramtype">const device T *</td> <td class="paramname"><span class="paramname"><em>in</em>, </span></td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">device U *</td> <td class="paramname"><span class="paramname"><em>out</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant size_t &</td> <td class="paramname"><span class="paramname"><em>reduction_size</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant size_t &</td> <td class="paramname"><span class="paramname"><em>out_size</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>gid</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>gsize</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>lid</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>lsize</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>simd_lane_id</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>simd_per_group</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>simd_group_id</em></span> )</td>
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</tr>
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</table>
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</div><div class="memdoc">
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</div>
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</div>
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<a id="a27e75312086e31f6bd1bbf4b366679da" name="a27e75312086e31f6bd1bbf4b366679da"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a27e75312086e31f6bd1bbf4b366679da">◆ </a></span>row_reduce_small()</h2>
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<div class="memitem">
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<div class="memproto">
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<div class="memtemplate">
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template<typename T , typename U , typename Op , int NDIMS = 0, int N_READS = REDUCE_N_READS> </div>
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<table class="memname">
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<tr>
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<td class="memname">void row_reduce_small </td>
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<td>(</td>
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<td class="paramtype">const device T *</td> <td class="paramname"><span class="paramname"><em>in</em>, </span></td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">device U *</td> <td class="paramname"><span class="paramname"><em>out</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant size_t &</td> <td class="paramname"><span class="paramname"><em>row_size</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant size_t &</td> <td class="paramname"><span class="paramname"><em>non_row_reductions</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant int *</td> <td class="paramname"><span class="paramname"><em>shape</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant size_t *</td> <td class="paramname"><span class="paramname"><em>strides</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant int &</td> <td class="paramname"><span class="paramname"><em>ndim</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant int *</td> <td class="paramname"><span class="paramname"><em>reduce_shape</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant size_t *</td> <td class="paramname"><span class="paramname"><em>reduce_strides</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const constant int &</td> <td class="paramname"><span class="paramname"><em>reduce_ndim</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>simd_lane_id</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>gid</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>gsize</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>tid</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>tsize</em></span> )</td>
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</tr>
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</table>
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</div><div class="memdoc">
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</div>
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</div>
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<a id="afd80a25fa84e6cc884dcc8698859ade1" name="afd80a25fa84e6cc884dcc8698859ade1"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#afd80a25fa84e6cc884dcc8698859ade1">◆ </a></span>thread_reduce()</h2>
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<div class="memitem">
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<div class="memproto">
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<div class="memtemplate">
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template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS> </div>
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<tr>
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<td class="memname">METAL_FUNC void thread_reduce </td>
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<td>(</td>
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<td class="paramtype">thread U &</td> <td class="paramname"><span class="paramname"><em>total</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const device T *</td> <td class="paramname"><span class="paramname"><em>row</em>, </span></td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>blocks</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">int</td> <td class="paramname"><span class="paramname"><em>extra</em></span> )</td>
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</tr>
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</div><div class="memdoc">
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</div>
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<a id="aa146bb611069fd2892f03714fd1cc3cf" name="aa146bb611069fd2892f03714fd1cc3cf"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#aa146bb611069fd2892f03714fd1cc3cf">◆ </a></span>threadgroup_reduce()</h2>
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<div class="memitem">
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<div class="memproto">
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<div class="memtemplate">
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template<typename T , typename U , typename Op , int N_READS = REDUCE_N_READS, int N_WRITES = REDUCE_N_WRITES> </div>
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<table class="memname">
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<td class="memname">METAL_FUNC void threadgroup_reduce </td>
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<td>(</td>
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<td class="paramtype">thread U</td> <td class="paramname"><span class="paramname"><em>totals</em>[N_WRITES], </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">threadgroup U *</td> <td class="paramname"><span class="paramname"><em>shared_vals</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint3</td> <td class="paramname"><span class="paramname"><em>lid</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>simd_lane_id</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>simd_per_group</em>, </span></td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint</td> <td class="paramname"><span class="paramname"><em>simd_group_id</em></span> )</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Reduce within the threadgroup. </p>
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</div>
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</div>
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