[petsc-users] how to import an array from matlab?

[siddhesh godbole]

hello,

i am sorry this may be a very silly question but kindly help me.
i want read an array of 10000 scalars  from /home/Desktop/project/psi.mat
to petsc. i have called the following routines:

  ierr =
PetscViewerBinaryOpen(PETSC_COMM_WORLD,"psi.mat",FILE_MODE_READ,&fd);CHKERRQ(ierr);
  PetscViewerBinaryGetDescriptor(fd,&REV);
  PetscBinaryRead(REV,trial,10000,PETSC_SCALAR);

1) are these routines enough?
2) how do i give path during runtime while executing the program?

*Siddhesh M Godbole*

5th year Dual Degree,
Civil Eng & Applied Mech.
IIT Madras

On Wed, Jan 28, 2015 at 6:59 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>    You probably want to stick to just using binary files to move the data
> between PETSc and MATLAB and not use sockets.
>
>     But if you want to use sockets the reason you get the error message is
> that you haven't called PetscBinaryWrite(5005) (or PetscBinaryRead(5005))
> or PetscOpenSocket(5005) BEFORE running the PETSc program to receive the
> results.
>
>    Barry
>
>
> > On Jan 27, 2015, at 11:33 PM, siddhesh godbole <
> siddhesh4godbole at gmail.com> wrote:
> >
> > Hello,
> >
> > I have been trying to use the functions PetscSocketOpen but it gets
> stuck in this function shooting the following error
> >
> > [0]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> > [0]PETSC ERROR: Error in system call
> > [0]PETSC ERROR: Connection refused by remote host renoir port 5005
> > [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html
> for trouble shooting.
> > [0]PETSC ERROR: Petsc Release Version 3.5.2, Sep, 08, 2014
> > [0]PETSC ERROR: ./10D on a arch-linux2-c-debug named renoir by hridya
> Wed Jan 28 10:45:49 2015
> > [0]PETSC ERROR: Configure options --download-mpich
> > [0]PETSC ERROR: #1 PetscOpenSocket() line 133 in
> /home/hridya/Downloads/petsc-3.5.2/src/sys/classes/viewer/impls/socket/send.c
> > [0]PETSC ERROR: #2 PetscViewerSocketSetConnection() line 400 in
> /home/hridya/Downloads/petsc-3.5.2/src/sys/classes/viewer/impls/socket/send.c
> > [0]PETSC ERROR: #3 PetscViewerSocketOpen() line 289 in
> /home/hridya/Downloads/petsc-3.5.2/src/sys/classes/viewer/impls/socket/send.c
> >
> > i am using this for the first time. Please help !
> >
> > Thanks a lot
> >
> >
> > Siddhesh M Godbole
> >
> > 5th year Dual Degree,
> > Civil Eng & Applied Mech.
> > IIT Madras
> >
> > On Tue, Jan 27, 2015 at 6:54 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> >
> >   Use PetscBinaryWrite.m from MATLAB (documentation at the top of the
> file) to save the array into a file then in PETSc use VecLoad() to load the
> matrix.  PetscBinaryWrite.m is in $PETSC_DIR/bin/matlab or
> $PETSC_DIR/share/petsc/matlab depending on your version of PETSc.
> >
> >    Barry
> >
> >
> >
> > > On Jan 27, 2015, at 1:52 AM, siddhesh godbole <
> siddhesh4godbole at gmail.com> wrote:
> > >
> > > Hello,
> > > i am trying to import an array of 10000 elements into petsc.
> interfacing fails when i try to use launch('./mycode',np,opt) in my matlab
> due to some incompatibility. Then i tried importing .mat file into petsc
> and i got stuck.
> > > Can you please tell me how can i import an array from matlab into
> petsc and use it for my calculations?
> > >  Thanks in advance!
> > >
> > > Siddhesh M Godbole
> > >
> > > 5th year Dual Degree,
> > > Civil Eng & Applied Mech.
> > > IIT Madras
> >
> >
>
>
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