<div dir="ltr"><div><div><div><div>Hi.<br></div>The link <a href="http://www.mcs.anl.gov/%7Ekaushik/Papers/pcfd99_gkks.pdf" target="_blank">http://www.mcs.anl.gov/~kaushik/Papers/pcfd99_gkks.pdf</a> gives a 404 error<br><br></div>I've found this link <a href="http://www.cs.odu.edu/~keyes/papers/pcfd99_gkks.pdf">http://www.cs.odu.edu/~keyes/papers/pcfd99_gkks.pdf</a><br></div>I think is the same article<br><br></div>Regards,<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 19, 2015 at 3:10 PM, Matthew Knepley <span dir="ltr"><<a href="mailto:knepley@gmail.com" target="_blank">knepley@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span class="">On Thu, Feb 19, 2015 at 1:29 PM, Ronal Celaya <span dir="ltr"><<a href="mailto:ronalcelayavzla@gmail.com" target="_blank">ronalcelayavzla@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">Are there publications and/or documentation that could help me gain an understanding of the algorithms and architecture of:<br><br>1.  PETSc's sparse matrix-vector multiplication <br></div></blockquote><div><br></div></span><div>There is nice stuff in:  <a href="http://www.mcs.anl.gov/~kaushik/Papers/pcfd99_gkks.pdf" target="_blank">http://www.mcs.anl.gov/~kaushik/Papers/pcfd99_gkks.pdf</a></div><div>and several discussions in the slides on the Tutorials page.</div><span class=""><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">2.  PETSc's CG algorithm <br><br>I
 need to gain a deep and thorough understanding of these, but would 
prefer not to start with studying the code first.  Any recommendations 
as to how to best approach my study I'd appreciate.  I know how to use 
PETSc, and have a working knowledge of numerical linear algebra parallel
 algorithms. <br></div></blockquote><div><br></div></span><div>There is nothing special about -pc_type cg. It follows Saad's book (<a href="http://www-users.cs.umn.edu/~saad/IterMethBook_2ndEd.pdf" target="_blank">http://www-users.cs.umn.edu/~saad/IterMethBook_2ndEd.pdf</a>) or </div><div><a href="http://www.cs.cmu.edu/~quake-papers/painless-conjugate-gradient.pdf" target="_blank">http://www.cs.cmu.edu/~quake-papers/painless-conjugate-gradient.pdf</a><br></div><div><br></div><div>  Thanks,</div><div><br></div><div>      Matt</div><span class=""><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">Thanks in advance!
    <br clear="all"><span><font color="#888888"><br>-- <br><div><div dir="ltr">Ronal Celaya<br></div></div>
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</blockquote></span></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><div><br></div>-- <br><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div>
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</blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr">Ronal Celaya<br></div></div>
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