<div dir="ltr">Luc,<div><br></div><div>Are you also aware that we've implemented sparse Cholesky decomposition by wrapping the Eigen C++ header library? We use it now within DIALS for true sparse-matrix decomposition. One modality is that we take a Jacobian expressed in terms of the sparse::matrix data structure that you defined within scitbx, but then we use Eigen to actually solve the normal matrix. </div><div><br></div><div>David Waterman & I can provide more details as needed.</div><div><br></div><div>Nick </div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div>Nicholas K. Sauter, Ph. D.<br>Computer Staff Scientist, Molecular Biophysics and Integrated Bioimaging Division<div>Lawrence Berkeley National Laboratory<br>1 Cyclotron Rd., Bldg. 33R0345<br>Berkeley, CA 94720<br>(510) 486-5713<br></div></div></div></div></div>
<br><div class="gmail_quote">On Sun, Mar 6, 2016 at 5:06 AM, Luc Bourhis <span dir="ltr"><<a href="mailto:luc_j_bourhis@mac.com" target="_blank">luc_j_bourhis@mac.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
this is an advanced warning for the introduction of a new top-level module named fast_linalg. In a couple of days, I will push it in one go as 25 commits but don’t be scared, nothing is changed outside the top directory fast_linalg, which also means it is not configured by default. Thus there cannot be any disruption but I thought it would be polite to warn all cctbx developers.<br>
<br>
The module features the automatic installation and integration of OpenBLAS which I have used to speed up smtbx refinement. I will commit that work later.<br>
<br>
Best wishes,<br>
<br>
Luc J. Bourhis<br>
<br>
<br>
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