Mpi_wbp

mpi_reconstruct_wbp

Purpose

This program allows you to generate 3D reconstructions from projections using the WeightedBackProjection algorithm (WBP).

Usage

This program has been tested using MPICH, LAM, SUN MPI and OPEN-MPI implementations. Nevertheless, some MPI implementations behave better than others when running on big volumes. OPEN-MPI has shown to be quite stable under those conditions. Therefore, we recommend to use OPEN-MPI.

$ mpirun -c [number of processes] mpi_reconstruct_wbp ...

or

$ mpirun -np [number of processes] mpi_reconstruct_wbp ...

Parameters

• `` This parameter takes a selection file name which includes the projections to process
• `` This is the output filename for the volume

Examples and notes

WBP Algorithm running in 10 processors at once. Each node will process the 10th part of the projections contained ing1t.sel

$ mpirun -np 10 mpi_reconstruct_wbp -i g1t.sel -o recons_wbp.vol

• The number of projections must be at least the number of processes used
• Both, input and output parameters are compulsory

You may select which nodes to run on providing-machinefile file.dat, after the-np [number_of_procs] option. Here,[[FileDat]] is a file containing a list of those nodes you wish to run on.

USER's COMMENTS

--Main.AlfredoSolano - 23 Jan 2007