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    <title>topic AES NI performance optimization in Software Tuning, Performance Optimization &amp; Platform Monitoring</title>
    <link>https://community.intel.com/t5/Software-Tuning-Performance/AES-NI-performance-optimization/m-p/1182067#M7473</link>
    <description>&lt;P&gt;&amp;nbsp;&lt;/P&gt;

&lt;P&gt;Hi,&lt;/P&gt;

&lt;P&gt;I am using iaesx64.s from Intel's sample library for disk encryption. It encrypts/decrypts 4 blocks at a time for increased performance.&lt;/P&gt;

&lt;P&gt;I was wondering if I change the code such that it encrypts 8 blocks at a time , will that result in any performance improvement? Or will that result in too much register pressure? Are there any guidelines available to change the assembly code?&lt;/P&gt;

&lt;P&gt;Looking forward to some advice&lt;/P&gt;

&lt;P&gt;Many Thanks&lt;/P&gt;

&lt;P&gt;Rani&lt;/P&gt;</description>
    <pubDate>Thu, 11 Jan 2018 10:38:43 GMT</pubDate>
    <dc:creator>r__rani</dc:creator>
    <dc:date>2018-01-11T10:38:43Z</dc:date>
    <item>
      <title>AES NI performance optimization</title>
      <link>https://community.intel.com/t5/Software-Tuning-Performance/AES-NI-performance-optimization/m-p/1182067#M7473</link>
      <description>&lt;P&gt;&amp;nbsp;&lt;/P&gt;

&lt;P&gt;Hi,&lt;/P&gt;

&lt;P&gt;I am using iaesx64.s from Intel's sample library for disk encryption. It encrypts/decrypts 4 blocks at a time for increased performance.&lt;/P&gt;

&lt;P&gt;I was wondering if I change the code such that it encrypts 8 blocks at a time , will that result in any performance improvement? Or will that result in too much register pressure? Are there any guidelines available to change the assembly code?&lt;/P&gt;

&lt;P&gt;Looking forward to some advice&lt;/P&gt;

&lt;P&gt;Many Thanks&lt;/P&gt;

&lt;P&gt;Rani&lt;/P&gt;</description>
      <pubDate>Thu, 11 Jan 2018 10:38:43 GMT</pubDate>
      <guid>https://community.intel.com/t5/Software-Tuning-Performance/AES-NI-performance-optimization/m-p/1182067#M7473</guid>
      <dc:creator>r__rani</dc:creator>
      <dc:date>2018-01-11T10:38:43Z</dc:date>
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