<div dir="ltr">Hi,<div><br></div><div>As I know, UmfPack is part of SuiteSparse [1]. I think you need to install that first.</div><div><br></div><div>Best,</div><div><br></div><div>KK<br><div><br></div><div>[1]<a href="http://faculty.cse.tamu.edu/davis/suitesparse.html">http://faculty.cse.tamu.edu/davis/suitesparse.html</a></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Oct 30, 2015 at 2:50 PM, Joshua N Pritikin <span dir="ltr"><<a href="mailto:jpritikin@pobox.com" target="_blank">jpritikin@pobox.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">A recent post on the Eigen support forum suggests that UmfPack offers<br>
the best performing sparse LU decomposition,<br>
<br>
<a href="https://forum.kde.org/viewtopic.php?f=74&t=128919&sid=6498e59768f42c2393dda6c5a5228df4" rel="noreferrer" target="_blank">https://forum.kde.org/viewtopic.php?f=74&t=128919&sid=6498e59768f42c2393dda6c5a5228df4</a><br>
<br>
I tried to include Eigen/UmfPackSupport, but I got<br>
<br>
/opt/R/x86_64-pc-linux-gnu-library/3.2/RcppEigen/include/Eigen/UmfPackSupport:9:21: fatal error: umfpack.h: No such file or directory<br>
<br>
Can somebody speculate on how much work is involved to get this to<br>
work?<br>
<br>
Thank you.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Joshua N. Pritikin<br>
Department of Psychology<br>
University of Virginia<br>
485 McCormick Rd, Gilmer Hall Room 102<br>
Charlottesville, VA 22904<br>
<a href="http://people.virginia.edu/~jnp3bc" rel="noreferrer" target="_blank">http://people.virginia.edu/~jnp3bc</a><br>
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</font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr">Qiang Kou<div><a href="mailto:qkou@umail.iu.edu" target="_blank">qkou@umail.iu.edu</a><br><div>School of Informatics and Computing, Indiana University</div><div><br></div></div></div></div>
</div>