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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Synchronizer (algorithm)</span></span>
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<p>In <a href="Computer_science" title="Computer science">computer science</a>, a <b>synchronizer</b> is an <a href="Algorithm" title="Algorithm">algorithm</a> that can be used to run a <a href="Synchronization_(computer_science)" title="Synchronization (computer science)">synchronous</a> algorithm on top of an asynchronous processor network, so enabling the <a href="Asynchronous_system" title="Asynchronous system">asynchronous system</a> to run as a synchronous network.
</p><p>The concept was originally proposed in (Awerbuch, 1985) along with three synchronizer algorithms named <b>alpha</b>, <b>beta</b> and <b>gamma</b> which provided different tradeoffs in terms of time and message complexity. Essentially, they are a solution to the problem of asynchronous algorithms (which operate in a network with no global clock) being harder to design and often less efficient than the equivalent synchronous algorithms. By using a synchronizer, algorithm designers can deal with the simplified "ideal network" and then later mechanically produce a version that operates in more realistic asynchronous cases.
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<div class="mw-heading mw-heading2"><h2 id="Available_synchronizer_algorithms">Available synchronizer algorithms</h2></div>
<p>The three algorithms that Awerbuch provided in his original paper are as follows:
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<ul><li><b>Alpha synchronizer</b>: This has low time complexity but high message complexity.</li>
<li><b>Beta synchronizer</b>: This has high time complexity but low message complexity.</li>
<li><b>Gamma synchronizer</b>: This provides a reasonable tradeoff between alpha and beta by providing fairly low time and message complexity.</li></ul>
<p>Since the original paper, other synchronizer algorithms have been proposed in the literature.
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<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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</style><cite id="CITEREFBaruch_Awerbuch1985" class="citation web cs1"><a href="Baruch_Awerbuch" title="Baruch Awerbuch">Baruch Awerbuch</a> (1985). <a rel="nofollow" class="external text" href="http://www.cs.uiowa.edu/~ghosh/synchronizer.pdf">"Complexity of Network Synchronization"</a> <span class="cs1-format">(PDF)</span>.</cite></li></ul></div><!--htdig_noindex--><div><div class="zim-footer">
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