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<h3>
Shane Snyder pushed to branch master
at <a href="https://xgitlab.cels.anl.gov/darshan/darshan">darshan / darshan</a>
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<h4>
Commits:
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<li>
<strong><a href="https://xgitlab.cels.anl.gov/darshan/darshan/commit/68b374d98fffdd456726b60c1044d8a2685ee579">68b374d9</a></strong>
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<span>by Shane Snyder</span>
<i>at 2017-02-10T17:37:53-06:00</i>
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<pre class="commit-message" style="margin: 0; white-space: pre-wrap">add some DxT perf results from Cong to docs
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<h4>2 changed files:</h4>
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darshan-runtime/doc/DXT-overhead.pdf
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darshan-runtime/doc/darshan-runtime.txt
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<h4>Changes:</h4>
<li id="46fd0e821e9bd5f192c651e0fa7e4e1c0ac4fc86">
<a href="https://xgitlab.cels.anl.gov/darshan/darshan/commit/68b374d98fffdd456726b60c1044d8a2685ee579#46fd0e821e9bd5f192c651e0fa7e4e1c0ac4fc86"><strong>darshan-runtime/doc/DXT-overhead.pdf</strong></a>
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No preview for this file type
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<li id="c1f1275094e9957965ea40cf5852335b4164fd05">
<a href="https://xgitlab.cels.anl.gov/darshan/darshan/commit/68b374d98fffdd456726b60c1044d8a2685ee579#c1f1275094e9957965ea40cf5852335b4164fd05"><strong>darshan-runtime/doc/darshan-runtime.txt</strong></a>
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<table class="code white" style="-premailer-cellpadding: 0; -premailer-cellspacing: 0; -premailer-width: 100%; background: #fff; font-family: monospace; font-size: 12px" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="26" style="background: #fafafa; border-right-color: #f0f0f0; border-right-style: solid; border-right-width: 1px; color: rgba(0,0,0,0.3); padding: 0 5px; text-align: right; width: 35px" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="26" style="background: #fafafa; border-right-color: #f0f0f0; border-right-style: solid; border-right-width: 1px; color: rgba(0,0,0,0.3); padding: 0 5px; text-align: right; width: 35px" align="right" bgcolor="#fafafa">...</td>
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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em">
<pre style="margin: 0"> <span id="LC26" class="line">functions like `fopen()`, `fread()`, etc).</span>
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<pre style="margin: 0"> <span id="LC27" class="line"></span>
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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em">
<pre style="margin: 0"> <span id="LC28" class="line">Starting in version 3.1.3, Darshan also allows for full tracing of application I/O</span>
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<pre style="margin: 0">-<span id="LC29" class="line">workloads using the newly developed Darshan eXtended Tracing (D<span class="idiff left right">X</span>T) instrumentation</span>
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<pre style="margin: 0">+<span id="LC29" class="line">workloads using the newly developed Darshan eXtended Tracing (D<span class="idiff left right">x</span>T) instrumentation</span>
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<pre style="margin: 0"> <span id="LC30" class="line">module. This module can be selectively enabled at runtime to provide high-fidelity</span>
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<pre style="margin: 0"> <span id="LC31" class="line">traces of an application's I/O workload, as opposed to the coarse-grained I/O summary</span>
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<pre style="margin: 0">-<span id="LC32" class="line">data that Darshan has traditionally provided. Currently, DXT only traces at the POSIX</span>
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<pre style="margin: 0">-<span id="LC33" class="line">and MPI-IO layers.</span>
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<pre style="margin: 0">+<span id="LC32" class="line">data that Darshan has traditionally provided. Currently, DxT only traces at the POSIX</span>
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<pre style="margin: 0">+<span id="LC33" class="line">and MPI-IO layers. Initial link:DXT-overhead.pdf[performance results] demonstrate the</span>
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<pre style="margin: 0">+<span id="LC34" class="line">low overhead of DxT tracing, offering comparable performance to Darshan's traditional</span>
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<pre style="margin: 0">+<span id="LC35" class="line">coarse-grained instrumentation methods.</span>
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<pre style="margin: 0"> <span id="LC36" class="line"></span>
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<pre style="margin: 0"> <span id="LC37" class="line">This document provides generic installation instructions, but "recipes" for</span>
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<td class="line_content noteable_line" style="padding-left: 0.5em; padding-right: 0.5em">
<pre style="margin: 0"> <span id="LC38" class="line">several common HPC systems are provided at the end of the document as well.</span>
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