<p><strong>Thinking Machines CM5 </strong></p><ul style="display: flex;"><li style="flex:1"><strong>Cray T3D </strong></li><li style="flex:1"><strong>NOW </strong></li></ul><p></p><p>Compute Processor <br>Compute </p><p>Processor <br>Message Unit <br>Compute Processor <br>Network <br>NI <br>I/O Bus <br>Network </p><p>Network Processor <br>Network <br>Memory Bus </p><p>DMA </p><p>(BLT) <br>Proc. <br>NI <br>Memory <br>Memory </p><p>Memory <br>DMA <br>SRAM </p><p><strong>Meiko CS2 </strong><br><strong>Intel Paragon </strong></p><p>Network Processor <br>Network <br>Compute </p><p>Processor <br>Network Processor <br>Compute Processor <br>NI <br>Proc. </p><p>DMA <br>Memory Bus </p><p>Memory Bus <br>Shared </p><ul style="display: flex;"><li style="flex:1">DMA </li><li style="flex:1">NI </li></ul><p>Shared </p><p>Memory <br>Memory <br>Network </p><p>31</p><p>53</p><p>Compute Processor <br>Network Processor <br>Network Processor <br>Compute Processor </p><p>Compute Processor <br>Compute Processor </p><p></p><ul style="display: flex;"><li style="flex:1">2</li><li style="flex:1">4</li></ul><p></p><p>1<br>2</p><ul style="display: flex;"><li style="flex:1">4</li><li style="flex:1">6</li></ul><p></p><p>Shared Memory <br>Shared Memory </p><p></p><ul style="display: flex;"><li style="flex:1">Memory </li><li style="flex:1">Memory </li></ul><p>Memory Operations To Satisfy the Read </p><p>Steps in the Active Message Request </p><p>Steps in the Active Message Reply </p><p>Memory Operations To Satisfy the Read </p><p>Steps in the Active Message Request </p><p>Steps in the Active Message Reply </p><p>1</p><p>9</p><p>Compute Processor <br>Network Processor <br>Network Processor </p><p>3</p><p>Compute Processor </p><p>3</p><p>Compute Processor <br>Network Processor <br>Network Processor <br>Compute Processor </p><p>6</p><ul style="display: flex;"><li style="flex:1">12 </li><li style="flex:1">1</li><li style="flex:1">11 </li><li style="flex:1">2</li><li style="flex:1">4</li><li style="flex:1">8</li><li style="flex:1">7</li><li style="flex:1">5</li><li style="flex:1">10 </li></ul><p></p><p>2<br>4</p><p>Shared Memory <br>Shared Memory </p><p>Shared Memory <br>Shared Memory </p><p>Memory Operations To Satisfy the Read </p><p>Steps in the Active Message Request </p><p>Steps in the Active Message Reply </p><p>Memory Operations To Satisfy the Read </p><p>Steps in the Active Message Request </p><p>Steps in the Active Message Reply </p><p></p><ul style="display: flex;"><li style="flex:1"><strong>CM-5 </strong></li><li style="flex:1"><strong>NOW </strong></li></ul><p></p><p><strong>Paragon </strong></p><p>9876543210<br>35 30 25 20 15 10 <br>5</p><p>140 120 100 <br>80 60 40 </p><p>Get </p><p>Get </p><p>Get <br>Store </p><p>20 </p><p>Store </p><p>Store <br>0</p><p>0</p><p></p><ul style="display: flex;"><li style="flex:1"><strong>Message Size (Bytes) </strong></li><li style="flex:1"><strong>Message Size (Bytes) </strong></li></ul><p></p><p><strong>Message Size (Bytes) </strong></p><p>1.4 1.2 <br>1<br>1.4 1.2 <br>1<br>0.8 0.6 0.4 0.2 <br>0<br>0.8 0.6 0.4 0.2 <br>0<br>Meiko (poll) Meiko-NP <br>Paragon (poll) Paragon-NP </p><p></p><ul style="display: flex;"><li style="flex:1"><strong>Granualarity between polls </strong></li><li style="flex:1"><strong>Granualarity between polls </strong></li></ul><p></p><p>1.6 1.4 1.2 <br>1<br>Meiko <br>0.8 </p><p>0.6 0.4 0.2 <br>0<br>Meiko-NP <br>1.2 <br>1<br>0.8 0.6 0.4 0.2 <br>0<br>Paragon Paragon-NP </p>