Thanks. I now have a better matrix B in my eigenproblem than last time. Now I included MUMPS. I get this error when I give large matrices to solve:
'Error reported by MUMPS in numerical factorization phase: INFO(1)=-1, INFO(2)=0' I checked the manual, there is only one instance of INFO(2)=0 and I am not able to get it. Can someone help. cheers, Venkatesh On Mon, May 25, 2015 at 6:56 PM, Jose E. Roman <[email protected]> wrote: > Once again, you need a parallel linear solver. > Read FAQ #6 and the corresponding section on the users manual. > http://slepc.upv.es/documentation/faq.htm > Jose > > > El 25/05/2015, a las 15:18, venkatesh g escribió: > > > Hi, > > > > I am solving the generalized eigen problem Ax=lambda Bx given in EX7 in > Slepc manual. > > > > Now I have restructured my matrix and I get reasonable answers. > > > > However, when I submit the problem in multiple cores, it is accessing a > large amount of memory than a serial job. > > > > 1 Serial job - Amount of memory used = 18 GB > > > > Parallel job in 240 cores - Amount of memory used = 456 GB > > > > I have attached the performance log for the run. > > > > I think it is loading the full matrix in each core for a parallel job, > but I am not sure how to resolve or whether I am correct.. > > > > Kindly help. > > > > cheers, > > Venkatesh > > > > <performance_log.txt> > >
