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<section id="updates-in-2020-1">
<h1>Updates in 2020.1<a class="headerlink" href="#updates-in-2020-1" title="Permalink to this headline"></a></h1>
<p><strong>General</strong></p>
<ul class="simple">
<li><p>Added support for the NVIDIA GA100/SM 8.x GPU architecture</p></li>
<li><p>Removed support for the Pascal SM 6.x GPU architecture</p></li>
<li><p>Windows 7 is not a supported host or target platform anymore</p></li>
<li><p>Added a rule for reporting uncoalesced memory accesses as part of the <em>Source Counters</em> section</p></li>
<li><p>Added support for report name placeholders %p, %q, %i and %h</p></li>
<li><p>The <a class="reference external" href="../ProfilingGuide/index.html#abstract">Kernel Profiling Guide</a> was added to the documentation</p></li>
</ul>
<p><strong>NVIDIA Nsight Compute</strong></p>
<ul class="simple">
<li><p>The UI command was renamed from <code class="docutils literal notranslate"><span class="pre">nv-nsight-cu</span></code> to <code class="docutils literal notranslate"><span class="pre">ncu-ui</span></code>. Old names remain for backwards compatibility.</p></li>
<li><p>Added support for roofline analysis charts</p></li>
<li><p>Added linked hot spot tables in section bodies to indicate performance problems in the source code</p></li>
<li><p>Added section navigation links in rule results to quickly jump to the referenced section</p></li>
<li><p>Added a new option to select how kernel names are shown in the UI</p></li>
<li><p>Added new memory tables for the L1/TEX cache and the L2 cache. The old tables are still available for backwards compatibility and moved to a new section containing deprecated UI elements.</p></li>
<li><p>Memory tables now show the metric name as a tooltip</p></li>
<li><p>Source resolution now takes into account file properties when selecting a file from disk</p></li>
<li><p>Results in the profile report can now be filtered by NVTX range</p></li>
<li><p>The Source page now supports collapsing views even for single files</p></li>
<li><p>The UI shows profiler error messages as dismissible banners for increased visibility</p></li>
<li><p>Improved the baseline name control in the profiler report header</p></li>
</ul>
<p><strong>NVIDIA Nsight Compute CLI</strong></p>
<ul class="simple">
<li><p>The CLI command was renamed from <code class="docutils literal notranslate"><span class="pre">nv-nsight-cu-cli</span></code> to <code class="docutils literal notranslate"><span class="pre">ncu</span></code>. Old names remain for backwards compatibility.</p></li>
<li><p>Queried metrics on GV100 and newer chips are sorted alphabetically</p></li>
<li><p>Multiple instances of NVIDIA Nsight Compute CLI can now run concurrently on the same system, e.g. for profiling individual MPI ranks. Profiled kernels are serialized across all processes using a system-wide file lock.</p></li>
</ul>
<p><strong>Resolved Issues</strong></p>
<ul class="simple">
<li><p>More C++ kernel names can be properly demangled</p></li>
<li><p>Fixed a <code class="docutils literal notranslate"><span class="pre">free():</span> <span class="pre">invalid</span> <span class="pre">pointer</span></code> error when profiling applications using pytorch > 19.07</p></li>
<li><p>Fixed profiling IBM Spectrum MPI applications that require PAMI GPU hooks (<code class="docutils literal notranslate"><span class="pre">--smpiargs="-gpu"</span></code>)</p></li>
<li><p>Fixed that the first kernel instruction was missed when computing <code class="docutils literal notranslate"><span class="pre">sass__inst_executed_per_opcode</span></code></p></li>
<li><p>Reduced surplus DRAM write traffic created from flushing caches during kernel replay</p></li>
<li><p>The <em>Compute Workload Analysis</em> section shows the IMMA pipeline on GV11b GPUs</p></li>
<li><p>Profile reports now scroll properly on MacOS when using a trackpad</p></li>
<li><p>Relative output filenames for the Profile activity now use the document directory, instead of the current working directory</p></li>
<li><p>Fixed path expansion of <code class="docutils literal notranslate"><span class="pre">~</span></code> on Windows</p></li>
<li><p>Memory access information is now shown properly for RED assembly instructions on the Source page</p></li>
<li><p>Fixed that user <code class="docutils literal notranslate"><span class="pre">PYTHONHOME</span></code> and <code class="docutils literal notranslate"><span class="pre">PYTHONPATH</span></code> environment variables would be picked up by NVIDIA Nsight Compute, resulting in locale encoding issues.</p></li>
</ul>
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