GPUmotif: an ultra-fast and energy-efficient motif analysis program using graphics processing units.

GPUmotif: an ultra-fast and energy-efficient motif analysis program using graphics processing units.
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DOI:
10.1371/journal.pone.0036865
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Qin Z
Qin Z
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Zandevakili P;Hu M;Qin Z

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Computational detection of TF binding patterns has become an indispensable tool in functional genomics research. With the rapid advance of new sequencing technologies, large amounts of protein-DNA interaction data have been produced. Analyzing this data can provide substantial insight into the mechanisms of transcriptional regulation. However, the massive amount of sequence data presents daunting challenges. In our previous work, we have developed a novel algorithm called Hybrid Motif Sampler (HMS) that enables more scalable and accurate motif analysis. Despite much improvement, HMS is still time-consuming due to the requirement to calculate matching probabilities position-by-position. Using the NVIDIA CUDA toolkit, we developed a graphics processing unit (GPU)-accelerated motif analysis program named GPUmotif. We proposed a “fragmentation" technique to hide data transfer time between memories. Performance comparison studies showed that commonly-used model-based motif scan and de novo motif finding procedures such as HMS can be dramatically accelerated when running GPUmotif on NVIDIA graphics cards. As a result, energy consumption can also be greatly reduced when running motif analysis using GPUmotif. The GPUmotif program is freely available at http://sourceforge.net/projects/gpumotif/
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