<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"> With <span class="Apple-style-span" style="font-family: 'Times New Roman'; font-size: medium; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; ">--download-mpich=1,Petsc install mpi. However, since I want to run my Petsc program on different machines and mpiexec -<span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; font-family: monospace; white-space: pre; "><b>machinefile</b> <machineifle> does not work. It complains:</span></span><div><span class="Apple-style-span" style="font-family: 'Times New Roman'; font-size: medium; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; "><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; font-family: monospace;
white-space: pre; ">invalid mpiexec argument -machinefile.</span></span></div><div><font class="Apple-style-span" face="monospace"><span class="Apple-style-span" style="font-size: medium; white-space: pre;"><br></span></font></div><div><span class="Apple-style-span" style="font-family: 'Times New Roman'; font-size: medium; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; "><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; font-family: monospace; white-space: pre; ">Do I have to install mpi for this ? Or do other way?</span></span></div><div><font class="Apple-style-span" face="monospace"><span class="Apple-style-span" style="font-size: medium; white-space: pre;"><br></span></font></div><div><span class="Apple-style-span" style="font-family: 'Times New Roman'; font-size: medium; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px;
"><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; font-family: monospace; white-space: pre; ">Thank you
</span></span><div><font class="Apple-style-span" face="monospace"><span class="Apple-style-span" style="font-size: medium; white-space: pre;"><br></span></font></div></div></td></tr></table><br>
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