[petsc-dev] error reading binary file

Tue Jun 12 15:18:58 CDT 2012

On Jun 12, 2012, at 4:05 PM, Matthew Knepley wrote:

> On Wed, Jun 13, 2012 at 3:57 AM, Mark F. Adams <mark.adams at columbia.edu> wrote:
> This seems to be the first call to VecSetBlockSize:
> 
> If that were true, how could we ever change the block size for any vector?
> 

This is the calling sequence in ex10:

      ierr = VecCreate(PETSC_COMM_WORLD,&b);CHKERRQ(ierr);
        ierr = VecSetFromOptions(b);CHKERRQ(ierr);
        ierr = VecLoad(b,fd);CHKERRQ(ierr);

I set the block size for matrices before SetFromOptions.  I never set vectors as blocked so I'm not sure _if_ anyone changes vector block size...

Anyway I just deleted the vector block thing in .info and it seems to work.

Thanks,
Mark

>    Matt
>  
> Breakpoint 1 at 0x1dbcee: file /Users/markadams/Codes/petsc-dev/src/vec/vec/interface/vector.c, line 1523.
> (gdb) r
> Starting program: /Users/markadams/Desktop/GAMG/ex10 -f0 binaryoutput-sym -vecload_block_size 3
> Reading symbols for shared libraries .++++++ done
> 
> Breakpoint 1, VecSetBlockSize (v=0x18c1850, bs=3) at /Users/markadams/Codes/petsc-dev/src/vec/vec/interface/vector.c:1523
> 1523      PetscFunctionBegin;
> (gdb) where
> #0  VecSetBlockSize (v=0x18c1850, bs=3) at /Users/markadams/Codes/petsc-dev/src/vec/vec/interface/vector.c:1523
> #1  0x00246e6f in VecLoad_Binary (vec=0x18c1850, viewer=0x180d850) at /Users/markadams/Codes/petsc-dev/src/vec/vec/utils/vecio.c:104
> #2  0x00247c85 in VecLoad_Default (newvec=0x18c1850, viewer=0x180d850) at /Users/markadams/Codes/petsc-dev/src/vec/vec/utils/vecio.c:348
> #3  0x001d7ed8 in VecLoad (newvec=0x18c1850, viewer=0x180d850) at /Users/markadams/Codes/petsc-dev/src/vec/vec/interface/vector.c:1111
> #4  0x00003a91 in main ()
> (gdb) n
> 1524      PetscValidHeaderSpecific(v,VEC_CLASSID,1);
> (gdb) 
> 1525      if (bs == v->map->bs) PetscFunctionReturn(0);
> (gdb) 
> 1526      ierr = PetscLayoutSetBlockSize(v->map,bs);CHKERRQ(ierr);
> (gdb) 
> [0]PETSC ERROR: --------------------- Error Message ------------------------------------
> [0]PETSC ERROR: Arguments are incompatible!
> [0]PETSC ERROR: Cannot change block size 1 to 3!
> [0]PETSC ERROR: ------------------------------------------------------------------------
> [0]PETSC ERROR: Petsc Development HG revision: 73637941c41b51aa3e638c914e6cb05248ece8b0  HG Date: Mon Jun 11 14:55:24 2012 -0400
> [0]PETSC ERROR: See docs/changes/index.html for recent updates.
> [0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
> [0]PETSC ERROR: See docs/index.html for manual pages.
> [0]PETSC ERROR: ------------------------------------------------------------------------
> [0]PETSC ERROR: /Users/markadams/Desktop/GAMG/ex10 on a arch-maco named madams-macbk-3.local by markadams Tue Jun 12 15:52:56 2012
> [0]PETSC ERROR: Libraries linked from /Users/markadams/Codes/petsc-dev/arch-macosx-gnu-g/lib
> [0]PETSC ERROR: Configure run at Mon Jun 11 17:03:36 2012
> [0]PETSC ERROR: Configure options CXX=/sw/lib/gcc4.4/bin/g++-4 CC=/sw/lib/gcc4.4/bin/gcc-4 CFLAGS=-malign-double CXXFLAGS=-malign-double FC=/sw/lib/gcc4.4/bin/gfortran --download-hypre=1 --download-parmetis=1 --download-metis=1 --download-triangle=1 --with-x=0 --with-debugging=1 --download-mpich=1 PETSC_ARCH=arch-macosx-gnu-g
> [0]PETSC ERROR: ------------------------------------------------------------------------
> [0]PETSC ERROR: PetscLayoutSetBlockSize() line 460 in /Users/markadams/Codes/petsc-dev/src/vec/vec/impls/mpi/pmap.c
> [0]PETSC ERROR: VecSetBlockSize() line 1526 in /Users/markadams/Codes/petsc-dev/src/vec/vec/interface/vector.c
> 
> 
> On Jun 12, 2012, at 3:42 PM, Matthew Knepley wrote:
> 
>> On Wed, Jun 13, 2012 at 3:45 AM, Mark F. Adams <mark.adams at columbia.edu> wrote:
>> >
>> > I thought there would be a -vec_block_size option, but alas its missing. Can you check in the debugger
>> > when the block size is getting set? I cannot find it in VecSetFromOptions().
>> 
>> Its in the stack trace right?
>> 
>> That is the second time, I want the first.
>> 
>>   Matt
>>  
>> Thanks,
>> mark
>> 
>> [0]PETSC ERROR: ------------------------------------------------------------------------
>> [0]PETSC ERROR: PetscLayoutSetBlockSize() line 460 in /Users/markadams/Codes/petsc-dev/src/vec/vec/impls/mpi/pmap.c
>> [0]PETSC ERROR: VecSetBlockSize() line 1526 in /Users/markadams/Codes/petsc-dev/src/vec/vec/interface/vector.c
>> [0]PETSC ERROR: VecLoad_Binary() line 104 in /Users/markadams/Codes/petsc-dev/src/vec/vec/utils/vecio.c
>> [0]PETSC ERROR: VecLoad_Default() line 348 in /Users/markadams/Codes/petsc-dev/src/vec/vec/utils/vecio.c
>> [0]PETSC ERROR: VecLoad() line 1111 in /Users/markadams/Codes/petsc-dev/src/vec/vec/interface/vector.c
>> [0]PETSC ERROR: main() line 132 in src/ksp/ksp/examples/tutorials/ex10.c
>> 
>> 
>> 
>> 
>> 
>> -- 
>> 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
> 
> 
> 
> 
> -- 
> 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

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