[petsc-users] slepc NHEP error

Jose E. Roman jroman at dsic.upv.es
Thu Jun 15 09:51:32 CDT 2017


> El 15 jun 2017, a las 16:18, Kannan, Ramakrishnan <kannanr at ornl.gov> escribió:
> 
> I made the advised changes and rebuilt slepc. I ran and the error still exists. Attached are the error file and the modified source file bvblas.c. 

This is really weird. It seems that at some point the number of columns of the BV object differs by one in different MPI processes. The only explanation I can think of is that a threaded BLAS/LAPACK is giving slightly different results in each process. Which BLAS/LAPACK do you have? Can you run with threads turned off? An alternative would be to configure PETSc with --download-fblaslapack  (or --download-f2cblaslapack)

Jose



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