To patch the MPI routines to the QCL code, download the most up-to-date version
of the QCL(QCL-0.5.0) code to a directory. Download the mpi patch from the
following location (http://www.redbrick.dcu.ie/ hego/project/mpi_qcl.patch).
First of all, untar and unzip the QCL code with the following command;
tar zxvf qcl-0.5.0.tgz
Change directory into the qcl-0.5.0 directory. Then apply the patch with this
command;
patch -p1 
(location of patch file)
To compile the newly patched source, issue the following commands;
make dep
make