High-throughput sequence alignment using Graphics Processing Units.
BACKGROUND
The recent availability of new, less expensive high-throughput DNA sequencing technologies has yielded a dramatic increase in the volume of sequence data that must be analyzed. These data are being generated for several purposes, including genotyping, genome resequencing, metagenomics, and de novo genome assembly projects. Sequence alignment programs such as MUMmer have proven essential for analysis of these data, but researchers will need ever faster, high-throughput alignment tools running on inexpensive hardware to keep up with new sequence technologies.


RESULTS
This paper describes MUMmerGPU, an open-source high-throughput parallel pairwise local sequence alignment program that runs on commodity Graphics Processing Units (GPUs) in common workstations. MUMmerGPU uses the new Compute Unified Device Architecture (CUDA) from nVidia to align multiple query sequences against a single reference sequence stored as a suffix tree. By processing the queries in parallel on the highly parallel graphics card, MUMmerGPU achieves more than a 10-fold speedup over a serial CPU version of the sequence alignment kernel, and outperforms the exact alignment component of MUMmer on a high end CPU by 3.5-fold in total application time when aligning reads from recent sequencing projects using Solexa/Illumina, 454, and Sanger sequencing technologies.


CONCLUSIONS
MUMmerGPU is a low cost, ultra-fast sequence alignment program designed to handle the increasing volume of data produced by new, high-throughput sequencing technologies. MUMmerGPU demonstrates that even memory-intensive applications can run significantly faster on the relatively low-cost GPU than on the CPU.
Schatz
Michael C
MC
Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD, USA. mschatz@umiacs.umd.edu
Trapnell
Cole
C
Delcher
Arthur L
AL
Varshney
Amitabh
A
D000818:Animals; D001408:Bacillus anthracis / Q000235:genetics; D001483:Base Sequence; D002107:Caenorhabditis / Q000235:genetics; D003196:Computer Graphics / Q000191:economics / Q000295:instrumentation*; D003201:Computers / Q000191:economics; D020451:Contig Mapping / Q000191:economics / Q000295:instrumentation; D004247:DNA / Q000648:ultrastructure; D003628:Database Management Systems; D030541:Databases, Genetic; D015698:Genomic Library; D008089:Listeria monocytogenes / Q000235:genetics; D016415:Sequence Alignment / Q000191:economics* / Q000295:instrumentation* / Q000379:methods; D017422:Sequence Analysis, DNA / Q000191:economics / Q000295:instrumentation / Q000379:methods; D017011:Streptococcus suis / Q000235:genetics; D013997:Time Factors; D014941:Work Simplification
D004247:DNA