Hello,<div><br></div><div>I have a sparse linear system, block dense, one block for each process, and solve with cg and block jacobi (ICC(0)) as preconditioners, with different reordering. During my tests I found quasi linear speed on kspsetup() and KSPSetUpOnBlocks() using 1wd,nd,rcm reorderings, but using qmd I get superlinear speedup. My CPU is a Xeon 5410.</div>
<div><br></div><div>Is that possible or something is going wrong?, and if I want to explain that, what functions on this stage should I monitor??. I really </div><div><span class="Apple-style-span" style="font-family: arial, sans-serif; line-height: 25px; ">appreciate</span> any advice. </div>
<div><br></div><div>Thanks in advance.</div><div><div><br>-- <br>Pedro Torres<br>GESAR/UERJ<br>Rua Fonseca Teles 121, São Cristóvão<br>Rio de Janeiro - Brasil<br>
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