On Mon, Jan 18, 2010 at 3:32 PM, (Rebecca) Xuefei YUAN <xy2102 at columbia.edu>wrote:
> Dear Jed, > > I got some origins, but I still do not understand what is going on here? > > Here is a piece of uninitialised value from > > ==9725== Conditional jump or move depends on uninitialised value(s) > ==9725== at 0x86EFB20: dnrm2_ (dnrm2.f:46) > ==9725== by 0x857ECB1: VecNorm_Seq (bvec2.c:60) > ==9725== by 0x8556C5B: VecNormBegin (comb.c:507) > ==9725== by 0x80BCE2D: SNESSolve_LS (ls.c:164) > ==9725== by 0x809E6E3: SNESSolve (snes.c:2221) > ==9725== by 0x80B71E4: DMMGSolveSNES (damgsnes.c:510) > ==9725== by 0x80B0A23: DMMGSolve (damg.c:372) > ==9725== by 0x8050E41: Solve (twgcqt2unffnidgp.c:580) > ==9725== by 0x804DBE0: main (twgcqt2unffnidgp.c:288) > ==9725== Uninitialised value was created by a heap allocation > ==9725== at 0x4022BF3: malloc (vg_replace_malloc.c:195) > ==9725== by 0x8628840: PetscMallocAlign (mal.c:40) > ==9725== by 0x862992F: PetscTrMallocDefault (mtr.c:194) > ==9725== by 0x8583503: VecCreate_Seq (bvec2.c:809) > ==9725== by 0x8569F43: VecSetType (vecreg.c:54) > ==9725== by 0x858E01B: VecCreateSeq (vseqcr.c:40) > ==9725== by 0x821F345: DACreateLocalVector (dalocal.c:82) > ==9725== by 0x825E26C: DMCreateLocalVector (dm.c:115) > ==9725== by 0x821F7FF: DMGetLocalVector (dalocal.c:139) > ==9725== by 0x8055EBD: FormFunction (twgcqt2unffnidgp.c:1033) > ==9725== by 0x80953E8: SNESComputeFunction (snes.c:1016) > ==9725== by 0x80BCD06: SNESSolve_LS (ls.c:159) > > What would it mean by "Uninitialised value was created by a heap > allocation"? > Heap allocation means calling malloc(). It looks like you get a vector but do not set some components. Matt > Thanks a lot! > > Rebecca > > Quoting Jed Brown <jed at 59A2.org>: > > On Mon, 18 Jan 2010 15:33:21 -0500, "(Rebecca) Xuefei YUAN" < >> xy2102 at columbia.edu> wrote: >> >>> Dear Jed, >>> >>> Thanks for the reply. >>> >>> However, there was an error message for this option: >>> >> >> It was introduced in valgrind-3.4.0 (and it's worth upgrading just for >> this feature). >> >> Jed >> >> >> > > > -- > (Rebecca) Xuefei YUAN > Department of Applied Physics and Applied Mathematics > Columbia University > Tel:917-399-8032 > www.columbia.edu/~xy2102 <http://www.columbia.edu/%7Exy2102> > > -- 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20100118/033450bf/attachment.htm>
