[petsc-users] Reading matrices into PETSc

[Gaurish Telang]

i have this large text file containing a matrix.
  This text file contains the non-zero entries of a very large sparse matrix

The first two columns indicate the position of the non-zero entry
  and the last column the actual non-zero value it self

for
example the matrix
  1 0 8
  0 0 5
  6 0 0
  is written in the text file in the form of
  1 1 1
  1 3 8
 2 3 5
  3 1 6

This is the standard  [(row ,column),  non-zero] entry format.  i want PETSc
to load this matrix
  from the text file
  i am not sure how
  to do that. What commands do I use?

I am new to PETSc, so some detail in the explanation will be really helpful.

Sincere thanks,

Gaurish.
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