[petsc-users] Internal memory MUMPS during numerical factorization
Matthew Knepley
knepley at gmail.com
Thu Dec 9 19:53:15 CST 2021
On Thu, Dec 9, 2021 at 7:53 PM Alberto F. Martín <amartin at cimne.upc.edu>
wrote:
> Dear PETSc users,
>
> I am experiencing the following error during numerical factorization
> while using the MUMPS package.
>
> It seems an internal memory error in the DMUMPS_ALLOC_CB function. Has
> anyone experienced this before? Any clue how this can be solved?
>
I have not seen that before. It looks like an allocation failed for MUMPS,
but it is not a nice
error, and does not succumb to Google. I would mail the MUMPS developers
for this one.
Thanks,
Matt
> Thanks!
>
> Best regards,
>
> Alberto.
>
> Entering DMUMPS 5.3.5 from C interface with JOB, N = 1 2359298
> executing #MPI = 2 and #OMP = 24
>
> =================================================
> MUMPS compiled with option -DGEMMT_AVAILABLE
> MUMPS compiled with option -Dmetis
> MUMPS compiled with option -Dparmetis
> MUMPS compiled with option -Dptscotch
> MUMPS compiled with option -Dscotch
> MUMPS compiled with option -DBLR_MT
> This MUMPS version includes code for SAVE_RESTORE
> This MUMPS version includes code for DIST_RHS
> =================================================
> L U Solver for unsymmetric matrices
> Type of parallelism: Working host
>
> ****** ANALYSIS STEP ********
>
> ** Maximum transversal (ICNTL(6)) not allowed because matrix is
> distributed
> Using ParMETIS for parallel ordering.
> Structural symmetry is: 92%
> A root of estimated size 3480 has been selected for Scalapack.
>
> Leaving analysis phase with ...
> INFOG(1) = 0
> INFOG(2) = 0
> -- (20) Number of entries in factors (estim.) = 548486696
> -- (3) Real space for factors (estimated) = 548486696
> -- (4) Integer space for factors (estimated) = 23032397
> -- (5) Maximum frontal size (estimated) = 4991
> -- (6) Number of nodes in the tree = 173314
> -- (32) Type of analysis effectively used = 2
> -- (7) Ordering option effectively used = 2
> ICNTL(6) Maximum transversal option = 0
> ICNTL(7) Pivot order option = 7
> ICNTL(14) Percentage of memory relaxation = 50000
> Number of level 2 nodes = 2
> Number of split nodes = 0
> RINFOG(1) Operations during elimination (estim)= 5.292D+11
> Distributed matrix entry format (ICNTL(18)) = 3
>
> MEMORY ESTIMATIONS ...
> Estimations with standard Full-Rank (FR) factorization:
> Maximum estim. space in Mbytes, IC facto. (INFOG(16)): 1246959
> Total space in MBytes, IC factorization (INFOG(17)): 2416245
> Maximum estim. space in Mbytes, OOC facto. (INFOG(26)): 190319
> Total space in MBytes, OOC factorization (INFOG(27)): 379897
>
> Elapsed time in analysis driver= 30.7962
>
> Entering DMUMPS 5.3.5 from C interface with JOB, N = 2 2359298
> executing #MPI = 2 and #OMP = 24
>
> ****** FACTORIZATION STEP ********
>
> >
> > GLOBAL STATISTICS PRIOR NUMERICAL FACTORIZATION ...
> > Number of working processes = 2
> > ICNTL(22) Out-of-core option = 0
> > ICNTL(35) BLR activation (eff. choice) = 0
> > ICNTL(14) Memory relaxation = 50000
> > INFOG(3) Real space for factors (estimated)= 548486696
> > INFOG(4) Integer space for factors (estim.)= 23032397
> > Maximum frontal size (estimated) = 4991
> > Number of nodes in the tree = 173314
> > Memory allowed (MB -- 0: N/A ) = 0
> > Memory provided by user, sum of LWK_USER = 0
> > Relative threshold for pivoting, CNTL(1) = 0.1000D-01
> > Max difference from 1 after scaling the entries for ONE-NORM (option
> > 7/8) = 0.95D+00
> > Average Effective size of S (based on INFO(39))= 150930257964
> >
> > Redistrib: total data local/sent = 37911993 60007025
> >
> > Elapsed time to reformat/distribute matrix = 2.3306
> > Problem with integer stack size 1 1 13
> > Internal error in DMUMPS_ALLOC_CB T 15 6090000
>
>
>
>
> --
> Alberto F. Martín-Huertas
> Senior Researcher, PhD. Computational Science
> Centre Internacional de Mètodes Numèrics a l'Enginyeria (CIMNE)
> Parc Mediterrani de la Tecnologia, UPC
> Esteve Terradas 5, Building C3, Office 215,
> 08860 Castelldefels (Barcelona, Spain)
> Tel.: (+34) 9341 34223
> e-mail:amartin at cimne.upc.edu
>
> FEMPAR project co-founder
> web: http://www.fempar.org
>
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--
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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