i m trying to run an exmple code of scalapack for testing..but i m getting the error .....
the configuration of Pc is 3.6 GHz, 2GB RAM fedora-3 kernal 2.6.9-1.667smp each.....
for compilation of the code as
mpif77 example.f \
/usr/local/include/libscalapack.a \
/usr/local/include/blacsF77init_MPI-LINUX-0.a \
/usr/local/include/blacs_MPI-LINUX-0.a \
/usr/local/include/blacsF77init_MPI-LINUX-0.a \
/usr/local/include/blas_LINUX.a
after this i have given the command for run like
mpirun N a.out
where N=4
the result comes out to be
ScaLAPACK Example Program #1 -- May 1, 1997
Solving Ax=b where A is a 9 by 9 matrix with a block size of 2
Running on 4 processes, where the process grid is 2 by 2
INFO code returned by PDGESV = 8
According to the normalized residual the solution is incorrect.
||A*x - b|| / ( ||x||*||A||*eps*N ) = 4.64139092E+14
what are the reasons for the solution to be incorrect....that is not empasised with the example code....as i m new with this parallelization options...please help me out of this....
tia
ravi
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