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<a href="gemm_2loader_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// Copyright © 2024 Apple Inc.</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span> </div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span> </div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include &quot;<a class="code" href="steel_2defines_8h.html">mlx/backend/metal/kernels/steel/defines.h</a>&quot;</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span> </div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment">// Loading helper</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacemlx.html">mlx</a> {</div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="keyword">namespace </span>steel {</div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="keyword">template</span> &lt;</div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">typename</span> T,</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> <span class="keywordtype">short</span> BROWS,</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> <span class="keywordtype">short</span> BCOLS,</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> <span class="keywordtype">short</span> dst_ld,</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> <span class="keywordtype">short</span> reduction_dim,</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> <span class="keywordtype">short</span> tgp_size,</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <span class="keywordtype">short</span> alignment = 1,</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <span class="keywordtype">short</span> n_reads = (BCOLS * BROWS) / (tgp_size),</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <span class="keywordtype">short</span> TCOLS = BCOLS / n_reads,</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keywordtype">short</span> TROWS = tgp_size / TCOLS&gt;</div>
<div class="foldopen" id="foldopen00025" data-start="{" data-end="};">
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html"> 25</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structmlx_1_1steel_1_1_block_loader.html">BlockLoader</a> {</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#a973804e5b1d418c98c90861cda1a6fb5"> 26</a></span> <a class="code hl_define" href="steel_2defines_8h.html#a90b91c866313ffa46eff6d9cc944ad2b">STEEL_CONST</a> <span class="keywordtype">short</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a973804e5b1d418c98c90861cda1a6fb5">n_rows</a> = (BROWS + TROWS - 1) / TROWS;</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092"> 27</a></span> <a class="code hl_define" href="steel_2defines_8h.html#a90b91c866313ffa46eff6d9cc944ad2b">STEEL_CONST</a> <span class="keywordtype">short</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a> = n_reads;</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// Leading dimension for src</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#aadafc50f7f06af434149d7469df4714d"> 30</a></span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#aadafc50f7f06af434149d7469df4714d">src_ld</a>;</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#ab87876699d55473620c7ea99f9da911d"> 31</a></span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#ab87876699d55473620c7ea99f9da911d">tile_stride</a>;</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// Thread location indices</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#a064e2cc77e0b1cf0f8027929e031775b"> 34</a></span> <span class="keyword">const</span> <span class="keywordtype">short</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a064e2cc77e0b1cf0f8027929e031775b">thread_idx</a>;</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#a9ef13742bcdf07532d8f09394928a8af"> 35</a></span> <span class="keyword">const</span> <span class="keywordtype">short</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a9ef13742bcdf07532d8f09394928a8af">bi</a>;</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#a78c326e75ee35a484685771143047cd4"> 36</a></span> <span class="keyword">const</span> <span class="keywordtype">short</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a78c326e75ee35a484685771143047cd4">bj</a>;</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// threadgroup and device memory</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#af34c184a19846e4b40ba54b2946589ec"> 39</a></span> threadgroup T* <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#af34c184a19846e4b40ba54b2946589ec">dst</a>;</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#a13004952d0bf2030b95acb621a3779dd"> 40</a></span> <span class="keyword">const</span> device T* <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a13004952d0bf2030b95acb621a3779dd">src</a>;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="foldopen" id="foldopen00042" data-start="{" data-end="};">
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader_1_1_read_vector.html"> 42</a></span> <span class="keyword">struct </span><span class="keyword">alignas</span>(alignment * sizeof(T)) <a class="code hl_struct" href="structmlx_1_1steel_1_1_block_loader_1_1_read_vector.html">ReadVector</a> {</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader_1_1_read_vector.html#afbef88bfb901a71e8423de911b7c7347"> 43</a></span> uint8_t <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader_1_1_read_vector.html#afbef88bfb901a71e8423de911b7c7347">v</a>[<span class="keyword">sizeof</span>(T) * <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a>];</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> };</div>
</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="comment">/* Constructor */</span></div>
<div class="foldopen" id="foldopen00047" data-start="{" data-end="}">
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#a37aca066e63dff238865b5923a2d4335"> 47</a></span> METAL_FUNC <a class="code hl_function" href="structmlx_1_1steel_1_1_block_loader.html#a37aca066e63dff238865b5923a2d4335">BlockLoader</a>(</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">const</span> device T* src_,</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">const</span> <span class="keywordtype">int</span> src_ld_,</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> threadgroup T* dst_,</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> ushort simd_group_id [[simdgroup_index_in_threadgroup]],</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> ushort simd_lane_id [[thread_index_in_simdgroup]])</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> : <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#aadafc50f7f06af434149d7469df4714d">src_ld</a>(src_ld_),</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#ab87876699d55473620c7ea99f9da911d">tile_stride</a>(reduction_dim ? BCOLS : BROWS * <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#aadafc50f7f06af434149d7469df4714d">src_ld</a>),</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a064e2cc77e0b1cf0f8027929e031775b">thread_idx</a>(simd_group_id * 32 + simd_lane_id),</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a9ef13742bcdf07532d8f09394928a8af">bi</a>(<a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a064e2cc77e0b1cf0f8027929e031775b">thread_idx</a> / TCOLS),</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a78c326e75ee35a484685771143047cd4">bj</a>(<a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a> * (<a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a064e2cc77e0b1cf0f8027929e031775b">thread_idx</a> % TCOLS)),</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> dst(dst_ + <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a9ef13742bcdf07532d8f09394928a8af">bi</a> * dst_ld + <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a78c326e75ee35a484685771143047cd4">bj</a>),</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a13004952d0bf2030b95acb621a3779dd">src</a>(src_ + <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a9ef13742bcdf07532d8f09394928a8af">bi</a> * <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#aadafc50f7f06af434149d7469df4714d">src_ld</a> + <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a78c326e75ee35a484685771143047cd4">bj</a>) {}</div>
</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="comment">/* Apply operation to threadgroup without bound checking */</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> UnaryOp&gt;</div>
<div class="foldopen" id="foldopen00063" data-start="{" data-end="}">
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#adb4ca2cc193630a779de552fa8847ddf"> 63</a></span> METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="structmlx_1_1steel_1_1_block_loader.html#adb4ca2cc193630a779de552fa8847ddf">apply_inplace_op</a>(thread <span class="keyword">const</span> UnaryOp&amp; <a class="code hl_variable" href="common_2binary_8h.html#a70228731d29946574b238d21fb4b360c">op</a>)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <a class="code hl_define" href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keywordflow">for</span> (<span class="keywordtype">short</span> i = 0; i &lt; BROWS; i += TROWS) {</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <a class="code hl_define" href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordflow">for</span> (<span class="keywordtype">short</span> j = 0; j &lt; <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a>; j++) {</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> dst[i * dst_ld + j] = <a class="code hl_variable" href="common_2binary_8h.html#a70228731d29946574b238d21fb4b360c">op</a>.apply(dst[i * dst_ld + j]);</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> }</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> }</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> }</div>
</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="comment">/* Load from device memory into threadgroup memory - without bound checking */</span></div>
<div class="foldopen" id="foldopen00074" data-start="{" data-end="}">
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#a6c9e27f11f48b34580ed2c7e9cad9a27"> 74</a></span> METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="structmlx_1_1steel_1_1_block_loader.html#a6c9e27f11f48b34580ed2c7e9cad9a27">load_unsafe</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <a class="code hl_define" href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keywordflow">for</span> (<span class="keywordtype">short</span> i = 0; i &lt; BROWS; i += TROWS) {</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> *((threadgroup <a class="code hl_struct" href="structmlx_1_1steel_1_1_block_loader_1_1_read_vector.html">ReadVector</a>*)(&amp;dst[i * dst_ld])) =</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> *((<span class="keyword">const</span> device <a class="code hl_struct" href="structmlx_1_1steel_1_1_block_loader_1_1_read_vector.html">ReadVector</a>*)(&amp;<a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a13004952d0bf2030b95acb621a3779dd">src</a>[i * <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#aadafc50f7f06af434149d7469df4714d">src_ld</a>]));</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> }</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> }</div>
</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="comment">/* Load from device memory into threadgroup memory - with bound checking */</span></div>
<div class="foldopen" id="foldopen00083" data-start="{" data-end="}">
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#abb0f4f66ec8b123627beb8eb4fbb609d"> 83</a></span> METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="structmlx_1_1steel_1_1_block_loader.html#abb0f4f66ec8b123627beb8eb4fbb609d">load_safe</a>(short2 src_tile_dim)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> src_tile_dim = src_tile_dim - short2(<a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a78c326e75ee35a484685771143047cd4">bj</a>, <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a9ef13742bcdf07532d8f09394928a8af">bi</a>);</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="comment">// Skip loading if thread has no valid reads</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordflow">if</span> (src_tile_dim.x &lt;= 0 || src_tile_dim.y &lt;= 0) {</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <a class="code hl_define" href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keywordflow">for</span> (<span class="keywordtype">short</span> i = 0; i &lt; BROWS; i += TROWS) {</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <a class="code hl_define" href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">for</span> (<span class="keywordtype">short</span> j = 0; j &lt; <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a>; j++) {</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> dst[i * dst_ld + j] = T(0);</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> }</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> }</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> }</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// Use fast thread memory for bound checks</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keywordtype">bool</span> tmp_idx[<a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a>];</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> T tmp_val[<a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a>];</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <a class="code hl_define" href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keywordflow">for</span> (<span class="keywordtype">short</span> i = 0; i &lt; BROWS; i += TROWS) {</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="comment">// Make sure tmp_idx only contains valid indices</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <a class="code hl_define" href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keywordflow">for</span> (<span class="keywordtype">short</span> j = 0; j &lt; <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a>; j++) {</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> tmp_idx[j] = (i &lt; src_tile_dim.y) &amp;&amp; (j &lt; src_tile_dim.x);</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> }</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="comment">// Read valid indices into tmp_val</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <a class="code hl_define" href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="keywordflow">for</span> (<span class="keywordtype">short</span> j = 0; j &lt; <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a>; j++) {</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> tmp_val[j] = <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a13004952d0bf2030b95acb621a3779dd">src</a>[(tmp_idx[j] ? i * <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#aadafc50f7f06af434149d7469df4714d">src_ld</a> + j : 0)];</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> }</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> </div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="comment">// Zero out uneeded values</span></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <a class="code hl_define" href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="keywordflow">for</span> (<span class="keywordtype">short</span> j = 0; j &lt; <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a>; j++) {</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> tmp_val[j] = tmp_idx[j] ? tmp_val[j] : T(0);</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> }</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> </div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="comment">// Copy values to threadgroup memory</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <a class="code hl_define" href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordflow">for</span> (<span class="keywordtype">short</span> j = 0; j &lt; <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">vec_size</a>; j++) {</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> dst[i * dst_ld + j] = tmp_val[j];</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> }</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> }</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> }</div>
</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="comment">/* Iteration helper */</span></div>
<div class="foldopen" id="foldopen00131" data-start="{" data-end="}">
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"><a class="line" href="structmlx_1_1steel_1_1_block_loader.html#a6af21428f0e7c17b48ddedf4dd20a1e8"> 131</a></span> METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="structmlx_1_1steel_1_1_block_loader.html#a6af21428f0e7c17b48ddedf4dd20a1e8">next</a>() {</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#a13004952d0bf2030b95acb621a3779dd">src</a> += <a class="code hl_variable" href="structmlx_1_1steel_1_1_block_loader.html#ab87876699d55473620c7ea99f9da911d">tile_stride</a>;</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> }</div>
</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span>};</div>
</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span>} <span class="comment">// namespace steel</span></div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span>} <span class="comment">// namespace mlx</span></div>
<div class="ttc" id="acommon_2binary_8h_html_a70228731d29946574b238d21fb4b360c"><div class="ttname"><a href="common_2binary_8h.html#a70228731d29946574b238d21fb4b360c">op</a></div><div class="ttdeci">Op op</div><div class="ttdef"><b>Definition</b> binary.h:141</div></div>
<div class="ttc" id="anamespacemlx_html"><div class="ttname"><a href="namespacemlx.html">mlx</a></div><div class="ttdef"><b>Definition</b> allocator.h:7</div></div>
<div class="ttc" id="asteel_2defines_8h_html"><div class="ttname"><a href="steel_2defines_8h.html">defines.h</a></div></div>
<div class="ttc" id="asteel_2defines_8h_html_a5a5c3095b132a7589bc19cd5cb80e2c6"><div class="ttname"><a href="steel_2defines_8h.html#a5a5c3095b132a7589bc19cd5cb80e2c6">STEEL_PRAGMA_UNROLL</a></div><div class="ttdeci">#define STEEL_PRAGMA_UNROLL</div><div class="ttdef"><b>Definition</b> defines.h:4</div></div>
<div class="ttc" id="asteel_2defines_8h_html_a90b91c866313ffa46eff6d9cc944ad2b"><div class="ttname"><a href="steel_2defines_8h.html#a90b91c866313ffa46eff6d9cc944ad2b">STEEL_CONST</a></div><div class="ttdeci">#define STEEL_CONST</div><div class="ttdef"><b>Definition</b> defines.h:3</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_1_1_read_vector_html"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader_1_1_read_vector.html">mlx::steel::BlockLoader::ReadVector</a></div><div class="ttdef"><b>Definition</b> loader.h:42</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_1_1_read_vector_html_afbef88bfb901a71e8423de911b7c7347"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader_1_1_read_vector.html#afbef88bfb901a71e8423de911b7c7347">mlx::steel::BlockLoader::ReadVector::v</a></div><div class="ttdeci">uint8_t v[sizeof(T) *vec_size]</div><div class="ttdef"><b>Definition</b> loader.h:43</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html">mlx::steel::BlockLoader</a></div><div class="ttdef"><b>Definition</b> loader.h:25</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_a064e2cc77e0b1cf0f8027929e031775b"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#a064e2cc77e0b1cf0f8027929e031775b">mlx::steel::BlockLoader::thread_idx</a></div><div class="ttdeci">const short thread_idx</div><div class="ttdef"><b>Definition</b> loader.h:34</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_a13004952d0bf2030b95acb621a3779dd"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#a13004952d0bf2030b95acb621a3779dd">mlx::steel::BlockLoader::src</a></div><div class="ttdeci">const device T * src</div><div class="ttdef"><b>Definition</b> loader.h:40</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_a37aca066e63dff238865b5923a2d4335"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#a37aca066e63dff238865b5923a2d4335">mlx::steel::BlockLoader::BlockLoader</a></div><div class="ttdeci">METAL_FUNC BlockLoader(const device T *src_, const int src_ld_, threadgroup T *dst_, ushort simd_group_id, ushort simd_lane_id)</div><div class="ttdef"><b>Definition</b> loader.h:47</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_a58bdf9b9c81962733e22ecdeae28c092"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#a58bdf9b9c81962733e22ecdeae28c092">mlx::steel::BlockLoader::vec_size</a></div><div class="ttdeci">STEEL_CONST short vec_size</div><div class="ttdef"><b>Definition</b> loader.h:27</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_a6af21428f0e7c17b48ddedf4dd20a1e8"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#a6af21428f0e7c17b48ddedf4dd20a1e8">mlx::steel::BlockLoader::next</a></div><div class="ttdeci">METAL_FUNC void next()</div><div class="ttdef"><b>Definition</b> loader.h:131</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_a6c9e27f11f48b34580ed2c7e9cad9a27"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#a6c9e27f11f48b34580ed2c7e9cad9a27">mlx::steel::BlockLoader::load_unsafe</a></div><div class="ttdeci">METAL_FUNC void load_unsafe() const</div><div class="ttdef"><b>Definition</b> loader.h:74</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_a78c326e75ee35a484685771143047cd4"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#a78c326e75ee35a484685771143047cd4">mlx::steel::BlockLoader::bj</a></div><div class="ttdeci">const short bj</div><div class="ttdef"><b>Definition</b> loader.h:36</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_a973804e5b1d418c98c90861cda1a6fb5"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#a973804e5b1d418c98c90861cda1a6fb5">mlx::steel::BlockLoader::n_rows</a></div><div class="ttdeci">STEEL_CONST short n_rows</div><div class="ttdef"><b>Definition</b> loader.h:26</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_a9ef13742bcdf07532d8f09394928a8af"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#a9ef13742bcdf07532d8f09394928a8af">mlx::steel::BlockLoader::bi</a></div><div class="ttdeci">const short bi</div><div class="ttdef"><b>Definition</b> loader.h:35</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_aadafc50f7f06af434149d7469df4714d"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#aadafc50f7f06af434149d7469df4714d">mlx::steel::BlockLoader::src_ld</a></div><div class="ttdeci">const int src_ld</div><div class="ttdef"><b>Definition</b> loader.h:30</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_ab87876699d55473620c7ea99f9da911d"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#ab87876699d55473620c7ea99f9da911d">mlx::steel::BlockLoader::tile_stride</a></div><div class="ttdeci">const int tile_stride</div><div class="ttdef"><b>Definition</b> loader.h:31</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_abb0f4f66ec8b123627beb8eb4fbb609d"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#abb0f4f66ec8b123627beb8eb4fbb609d">mlx::steel::BlockLoader::load_safe</a></div><div class="ttdeci">METAL_FUNC void load_safe(short2 src_tile_dim) const</div><div class="ttdef"><b>Definition</b> loader.h:83</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_adb4ca2cc193630a779de552fa8847ddf"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#adb4ca2cc193630a779de552fa8847ddf">mlx::steel::BlockLoader::apply_inplace_op</a></div><div class="ttdeci">METAL_FUNC void apply_inplace_op(thread const UnaryOp &amp;op) const</div><div class="ttdef"><b>Definition</b> loader.h:63</div></div>
<div class="ttc" id="astructmlx_1_1steel_1_1_block_loader_html_af34c184a19846e4b40ba54b2946589ec"><div class="ttname"><a href="structmlx_1_1steel_1_1_block_loader.html#af34c184a19846e4b40ba54b2946589ec">mlx::steel::BlockLoader::dst</a></div><div class="ttdeci">threadgroup T * dst</div><div class="ttdef"><b>Definition</b> loader.h:39</div></div>
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