<div class="gmail_quote">On Mon, Aug 29, 2011 at 16:36, Likun Tan <span dir="ltr"><<a href="mailto:likunt@andrew.cmu.edu">likunt@andrew.cmu.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div id=":tp">If i keep using the uncoupled small system and use ksp to solve the linear<br>
equations sequentially, there is nowhere i can take advantage of parallel<br>
computing.<br></div></blockquote></div><div><br></div>How small are your systems? Maybe you should just create the same matrix on every processor and do a direct solve with all the right hand sides.<br>