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mkdir 2013
author Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
date Tue, 14 Jan 2014 04:18:59 +0900
parents Aug-2013/6th.html@c9b2998eb516
children
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1 <!DOCTYPE html>
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2
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3 <!--
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4 Google HTML5 slide template
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5
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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6 Authors: Luke Mahé (code)
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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7 Marcin Wichary (code and design)
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8
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9 Dominic Mazzoni (browser compatibility)
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10 Charles Chen (ChromeVox support)
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11
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12 URL: http://code.google.com/p/html5slides/
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13 -->
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14
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15 <html>
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16 <head>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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17 <title>2013-08-06</title>
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18
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19 <meta charset='utf-8'>
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20 <script
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21 src='http://html5slides.googlecode.com/svn/trunk/slides.js'></script>
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22 </head>
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23
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24 <style>
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25 /* Your individual styles here, or just use inline styles if that’s
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26 what you want. */
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27 .slides article { background-image: none !important; background-color: white; }
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28
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29
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30 </style>
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31
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32 <body style='display: none'>
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33
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34 <section class='slides layout-regular template-default'>
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35
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36 <!-- Your slides (<article>s) go here. Delete or comment out the
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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37 slides below.-->
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38
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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39 <article>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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40 <h1>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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41 Ceriumによる
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42 <br>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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43 正規表現マッチャの実装
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44 </h1>
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45 <p>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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46 Masataka Kohagura
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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47 <br>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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48 6th July , 2013
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49 </p>
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50 </article>
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51
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52 <article>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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53 <h3>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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54 研究目的
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55 </h3>
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56 <p>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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57 本研究室では、Cell用に作られたCeriumにて並列プログラミングを行なっている。様々な例題を実装することにより、どのような問題でも並列処理ができることを証明する。
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58 </p>
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59 <p>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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60 現在は文字列サーチを実装している段階で、ボイヤームーア法を実装している。
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61 セミグループという、分割したファイルに対して並列処理をさせるような手法によって、既存の文字列サーチと処理速度を比較し、どれだけ速く、どれだけ効率よくなるのかを測定する。
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62 </p>
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63 <p>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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64 様々な並列処理のプログラムを実装することでプログラムに慣れ、
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65 </p>
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66 </article>
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67
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68 <article>
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69 <h3>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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70 今週のしたこと
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71 </h3>
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72 <p>
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73 ・regex_masのバグ取り
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74 ("doing"という単語が本来は27856個存在するはずだが、このプログラムだと27854個と2個不足した状態で出力された。)
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75 </p>
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76 <p>
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77 ・時間測定
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78 </p>
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79 </article>
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80
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81 <article class='smaller'>
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82 <h3>main.ccの修正</h3>
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83 <p>修正前</p>
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84 <section><pre>
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85 t_exec[k]->set_param(0,(memaddr)offset);
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86 <font color=red>t_exec[k]->set_param(1,(memaddr)set_one_task_length);</font>
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87 if(size != w->size){
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88 t_exec[k]->set_inData(0,w->file_mmap + a*w->division_size, size+EXTRA_LENGTH);
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89 }else{
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90 t_exec[k]->set_inData(0,w->file_mmap + a*w->division_size, size);
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91 }
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92 t_exec[k]->set_outData(0,w->o_data + a*w->out_size, w->division_out_size);
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93 </pre><section>
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94 <p>修正後</p>
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95 <section><pre>
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96 t_exec[k]->set_param(0,(memaddr)offset);
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97 if(size != w->size){
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98 <font color=red> t_exec[k]->set_param(1,(memaddr)set_one_task_length+EXTRA_LENGTH);</font>
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99 t_exec[k]->set_inData(0,w->file_mmap + a*w->division_size, size+EXTRA_LENGTH);
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100 }else{
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101 <font color=red> t_exec[k]->set_param(1,(memaddr)set_one_task_length);</font>
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102 t_exec[k]->set_inData(0,w->file_mmap + a*w->division_size, size);
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103 }
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104 t_exec[k]->set_outData(0,w->o_data + a*w->out_size, w->division_out_size);
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105 </pre><section>
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106 </article>
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107
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108 <article class='smaller'>
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109 <h3>時間測定(参考程度に)</h3>
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110
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111 <table>
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112 <p>mac pro上での測定</p>
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113 <p>Cerium APIでの計測</p>
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114 <tr>
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115 <td>
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116 <table>
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117 <tr><td>cpu_num</td><td>time(ms)</td></tr>
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118 <tr><td>1</td><td>38.752</td></tr>
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119 <tr><td>2</td><td>19.347</td></tr>
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120 <tr><td>4</td><td>10.028</td></tr>
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121 <tr><td>8</td><td>5.393</td></tr>
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122 <tr><td>10</td><td>4.502</td></tr>
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123 <tr><td>11</td><td>4.198-5.977</td></tr>
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124 <tr><td>12</td><td>5.585</td></tr>
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125 </table>
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126 </td>
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127 <tr>
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128 </table>
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129
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130 <p>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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131 ・10回ほど手動で実行して、それの中央値をとっているだけ。
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132 </p>
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133 <p>
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134 ・現在集計スクリプトを作成中。
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135 </p>
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136 <p>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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137 ・cpu_num = 11のとき実行するたんびにバラバラになる。
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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138 </p>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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139
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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140 </article>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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141 </body>
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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142 </html>