# PETSc Options, IO, and System Utilities

PETSc provides a variety of "system" level routines, including parallel file
access, graphics, options management, and synchronized printing to screen.

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Source files
<p><a href="sortd.c.html">sortd.c</a><br>
<a href="sortip.c.html">sortip.c</a><br>
<a href="mpitr.c.html">mpitr.c</a><br>
<a href="mpishm.c.html">mpishm.c</a><br>
<a href="server.c.html">server.c</a><br>
<a href="mpimesg.c.html">mpimesg.c</a><br>
<a href="str.c.html">str.c</a><br>
<a href="matheq.c.html">matheq.c</a><br>
<a href="pdisplay.c.html">pdisplay.c</a><br>
<a href="sortso.c.html">sortso.c</a><br>
<a href="mathclose.c.html">mathclose.c</a><br>
<a href="psplit.c.html">psplit.c</a><br>
<a href="mathinf.c.html">mathinf.c</a><br>
<a href="memc.c.html">memc.c</a><br>
<a href="fhost.c.html">fhost.c</a><br>
<a href="mpiu.c.html">mpiu.c</a><br>
<a href="fuser.c.html">fuser.c</a><br>
<a href="arch.c.html">arch.c</a><br>
<a href="psleep.c.html">psleep.c</a><br>
<a href="mathfit.c.html">mathfit.c</a><br>
<a href="segbuffer.c.html">segbuffer.c</a><br>
<a href="mpits.c.html">mpits.c</a><br>
<a href="sorti.c.html">sorti.c</a><br>
<a href="pbarrier.c.html">pbarrier.c</a><br>

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Directories
<p><a href="openmp/index.html">openmp</a><br>
<a href="ftn-kernels/index.html">ftn-kernels</a><br>
<a href="ftn-custom/index.html">ftn-custom</a><br>