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"? 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
