<p dir="ltr">Sorry, yes, I meant losing less information than I would lose without adding beforehand.</p>
<p dir="ltr">Rows are in fact on different processors...</p>
<p dir="ltr">So yes, elementary matrix multiplication sounds like a cool idea! Thanks a lot!!</p>
<p dir="ltr">Carles</p>
<div class="gmail_quote">El dia 19/11/2015 21:12, "Jed Brown" <<a href="mailto:jed@jedbrown.org">jed@jedbrown.org</a>> va escriure:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Carles Bona <<a href="mailto:carlesbona@gmail.com">carlesbona@gmail.com</a>> writes:<br>
<br>
> Let's say I want to modify the first equation, but I don't want to lose the<br>
> information there,<br>
<br>
1. The operation you describe still loses information.<br>
<br>
2. Consider expressing your row operations as matrix-matrix multiplication.<br>
</blockquote></div>