I just merged several pipelined conjugate gradient methods from Pieter Ghysels. If you are interested, here's the paper.<div><br></div><div><a href="http://www.exascience.com/wp-content/uploads/2012/12/Ghysels_12.2012.1.pdf">http://www.exascience.com/wp-content/uploads/2012/12/Ghysels_12.2012.1.pdf</a><br>
<br>Access the methods with -ksp_type <pipecg,groppcg,pipecr></div>