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          <img src="images/concurrency.png" width="200">
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      <div class='slide cover'>
        <table width="90%" height="90%" border="0" align="center">
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            <td><div align="center">
                <h1><font color="#808db5">Ceriumの再設計</font></h1>
            </div></td>
          </tr>
          <tr>
            <td><div align="left">
                Yuhi TOMARI
                <script>
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                  var day = date.getDate();

                  var monthList = new Array("January","February","March","April","May","June",
                  "July","August","September","October","November","December");

                  document.write(monthList[month]+" "+day+", "+year);

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      <div class='slide'>
        <h2>研究目的</h2>
        <ul>
          <li>当研究室ではCS/DSを使用したプログラミングを行っている</li>
          <dd>CS/DSについて
            <br>プログラムをCode Segment/Data Segmentという単位に分けて書くという手法を提案している
            <br>Code Segment:処理の単位(実行単位)
            <br>Data Segment:データ構造</dd>

          <li>CS/DSベースのプログラミングモデルの開発</li>
          <dd>CS/DSを用いた手法でプログラミングを行う言語、Continuation Based Cを用いて開発を行う</dd>
          <li>独自のMemory Managementの機構を持つ</li>
          <li>Cerium、Alice、Jungleで得られた知見を……</li>
          <li>名前も考える必要がある？(システム自体の名前と、CS/DSの名前)</li>
        </ul>
        <p>ただこれCerium再実装の話なので、使わないかも</p>
      </div>

      <div class='slide'>
        <h2>進捗</h2>
        <ul>
          <li><dt>CPU固定でthreadを生成するAPI</dt>
            <dd>OSXで無理っぽい->(できるのでは->無理っぽい)x2</dd>
            <dd>とりあえずLinuxで例題の作成</dd>
          </li>

          <li>
            <dt>LinuxでCeriumが動くかどうか</dt>
          </li>
        </ul>
      </div>

      <div class='slide'>
        <h2>Affinityを設定するAPI(Linux)</h2>
        <pre class="code">
          int sched_setaffinity(pid_t pid,
          size_t cpusetsize, const cpu_set_t *mask);
        </pre>

        <ul>
          <li><dt>affinity(親和度、cpu_set_t)は、そのスレッドが実行を許可されているCPUの集合を決定する
              <dd>maskにCPUをsetするときは、CPU_SETを使用する(例:CPU_SET(cpu_id,&mask)</dd></dt></li>
          <li><dt>スレッドのaffinityマスクを一つのCPUに設定し、スレッドをCPUに括りつけることができる(Man page)</dt></li>
        </ul>
      </div>

      <div class='slide'>
        <h2>sched_setaffinity Sample</h2>
        <pre class="code">
          void set_cpu(int cpu_id) {
              cpu_set_t mask;
              CPU_ZERO(&mask);
              CPU_SET(cpu_id, &mask);

              if (sched_setaffinity(0, sizeof(mask), &mask) == -1) {
                  printf("Failed to set CPU affinity. \n");
                  return;
              }
              printf("Succeed to set CPU %d\n",cpu_id);
              return;
          }</pre>
        <p>
          どうやって本当に割り当てられてるか調べるか。taskset? sar?
        </p>

      </div>


      <div class='slide'>
        <h2>Todo</h2>
        <ul>
          <li><dt>sched_setaffinityをCeriumに実装</dt></li>
          <li><dt>Memory Allocatorの設計と実装</dt></li>
        </ul>
      </div>


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author	Yuhi TOMARI <yuhi@cr.ie.u-ryukyu.ac.jp>
date	Tue, 18 Nov 2014 18:09:17 +0900
parents	75b31f123159
children	642a7f5a5bad