CGH102@psuvm.psu.edu (09/11/90)
Can anybody tell me where I can find a parallel linear system solver for large sparse block tridiagonal matrix working on Cray or any other systems? Any information will be appreciated. cgh102@psuvm han@psuvax1.cs.psu.edu
matt@cs.city.ac.uk (Matthew Sillitoe) (09/12/90)
In article <90253.160421CGH102@psuvm.psu.edu> CGH102@psuvm.psu.edu writes: >Can anybody tell me where I can find >a parallel linear system solver for large sparse >block tridiagonal matrix working on Cray or any other systems? Never mind that ! Can anyone tell me *what* a P.L.S.S.f.L.S.B.T.M is ? Can anyone name a longer name for a piece of software ? Is this guy for real ? Matt -- PS Ignore my ignorance !
mccalpin@perelandra.cms.udel.edu (John D. McCalpin) (09/13/90)
> On 12 Sep 90 16:06:54 GMT, matt@cs.city.ac.uk (Matthew Sillitoe) said: > In article <90253.160421CGH102@psuvm.psu.edu> CGH102@psuvm.psu.edu writes: >> Can anybody tell me where I can find a parallel linear system solver >> for large sparse block tridiagonal matrix working on Cray or >> any other systems? > Never mind that ! Can anyone tell me *what* a P.L.S.S.f.L.S.B.T.M is ? > Can anyone name a longer name for a piece of software ? > Is this guy for real ? Block tridiagonal matrices arise naturally from the discretization of linear elliptic partial differential equations in two or more spatial dimensions. *LOTS* of supercomputer time around the world is used to solve such systems. Obviously the poster wants a parallel version to speed up his/her code on a multi-cpu Cray. Nothing strange about this at all. In fact, I would like to have access to such a code myself. I have a direct solver called 'croprt.f' which is available by anonymous ftp from ftp.fsu.edu in pub/mathlibs/croprt.f. I have never tried multitasking it.... > PS Ignore my ignorance ! Since you knew of your ignorance, why did you bother to waste the net.bandwidth? As Mark Twain so aptly said, "It is better to keep your mouth closed and appear stupid than to open it and remove all doubt." -- John D. McCalpin mccalpin@perelandra.cms.udel.edu Assistant Professor mccalpin@vax1.udel.edu College of Marine Studies, U. Del. J.MCCALPIN/OMNET