Parameters:
 --winsize (-ws),   e.g. 64 or 80, must be multiple of 16
 --ngpus (-ng),     number of GPUs to use, e.g. -ng 4
 --infile (-i),     path to an input file in the fasta format, e.g. data/3_667.fax
 --outfile (-o),    path to a file where the results are written, e.g. results/results.txt
 --submatrix (-sm), e.g. data/substitution_matrices/BLOSUM62.txt
 --gapopen (-go),   e.g. 10
 --gapext (-ge),    e.g. 2
 --alg (-a),        sw - Smith-Waterman
                    nwg - Needleman-Wunsch global
                    nws - Needleman-Wunsch semiglobal
                    nwgs, nwss, sws - additional letter 's' at the end means "score-only version"
 --gpus (-g),       to select particular GPUs to be used, e.g. -g 0,3
 --help (-h),       print this help

