[petsc-users] filename upper case letters

[Gideon Simpson]

It has the following behavior, which is consistent with  what was said about OS X.  If there is no xvec.bin/xvec.bin.info, and you run this code, it saves to Xvec.bin as desired.  However, if xvec.bin/xvec.bin.info are present, it overwrites them, using the lower case filename.

#include <petscvec.h>

int main(int argc,char **argv)
{
  PetscInt n=100;

  char X_filename[PETSC_MAX_PATH_LEN]="Xvec.bin";
  Vec X;
  PetscViewer viewer;
  PetscScalar a=2.0;
  
  PetscInitialize(&argc,&argv,NULL,NULL);

  VecCreate(PETSC_COMM_WORLD,&X);  
  VecSetSizes(X,PETSC_DECIDE,n);
  VecSetFromOptions(X);
  VecSet(X, a);

  PetscViewerBinaryOpen(PETSC_COMM_WORLD, X_filename,FILE_MODE_WRITE,&viewer);
  VecView(X, viewer);
  PetscViewerDestroy(&viewer);

  VecDestroy(&X);
  
  PetscFinalize();
  return 0;
}

-gideon

> On Feb 16, 2015, at 6:27 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> 
> 
>  Send a tiny case that demonstrates this, we can then reproduce it and debug it.
> 
> 
>> On Feb 16, 2015, at 4:54 PM, Gideon Simpson <gideon.simpson at gmail.com> wrote:
>> 
>> Does petsc not distinguish lower/upper case letters in file names?  I was trying to write a vector to the file “Fvec.bin”, but it comes out as “fvec.bin”.
>> 
>> -gideon
>> 
>