The Ray Project Team gives you a 100% parallel MPI-based assembler called Ray. Ray is NOW available at http://sourceforge.net/projects/denovoassembler/files/. It supports Illumina paired-end reads. It is 100% parallel, and it is a single executable (no pesky perl scripts!). The source code is licensed with the GPL-v3.
Try it, and give us your comments, bugs, suggestions, and concerns on our mailing list.
Ray-0.0.3: a NEW MPI-based parallel genome assembler
The Ray Project Team