I have been trying to use Lastz to map an SRA dataset to a small FASTA file containing 16 amplicon sequences using the Galaxy main instance. I did a test analysis with one single amplicon sequence and the job ran to completion. When I start a job with the FASTA containing all 16 sequences, it hangs in the grey waiting to run mode for days and days, to the point where I am forced to delete it (I know deleting grey jobs is a no-no, but I didn't think that it would ever start running). I thought I might be able to get around this by using a cloud instance with the highest available RAM, but it appears that Lastz (any many of the other tools I use) are not available on the Cloudman version of Galaxy. Does anyone have any ideas about a work around?