[Beowulf] GPU-HMMer for interested people

Joe Landman landman at scalableinformatics.com
Wed Dec 17 10:51:00 EST 2008


Hi Olli-Pekka

Olli-Pekka Lehto wrote:
> Joe Landman wrote:
>> Hi folks
>>
>>   GPU-HMMer (part of the MPI-HMMer effort) has just been
>> announced/released at http://www.mpihmmer.org
>>
>>   MPI-HMMer has itself been improved with parallel-IO and better
>> scalability features.  JP has measured some large number (about 180x)
>> over single cores on a cluster for the MPI run.
>>
>>   Enjoy!
>>
>> Joe
>>
> 
> Hi Joe,
> 
> Looks quite promising. Here are results from a simple real-world test case:
> 
> GPU: Dual GTX280, each with 1GB RAM
> CPU: Single Intel Core2 quad Q9550 2.83GHz
> 
> hmmsearch 4 threads sorted:                274.49s
> hmmsearch 4 threads unsorted:             254.23s
> cuda_hmmsearch unsorted                    407.85s
> cuda_hmmsearch sorted:                      62.69s
> cuda_hmmsearch sorted 2 simultaneous runs:    78.23s 80.79s
> 
> Remarks:
> 
> -Running hmmsort to sort the sequence database is critical to obtain 
> reasonable performance from cuda_hmmsearch. However, the regular 
> hmmsearch is slightly slower with the sorted database.
> 
> -Running two simultaneous runs assigned to different GPUs on a dual-GPU 
> quad-core system yields some performance penalty, but is still quite 
> feasible.
> 
> -I used the parameters THREADSIZE=320 BLOCKSIZE=64. I'm not completely 
> sure if these are the optimum values for GTX280. Any better suggestions?

I'd suggest subscribing/posting to the mpihmmer list 
(http://lists.scalableinformatics.com/mailman/listinfo/mpihmmer) so we 
don't clutter beowulf with this.

JP could likely tell you more about the appropriate sizing for GTX280. 
We have a pair of GTX260's in the lab that some runs were done on.

Could you describe your run a bit more (sequence queries, hmm size, 
database and size)?  On the mpihmmer list though ...

Thanks!

Joe


> 
> Regards,
> Olli-Pekka


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Joseph Landman, Ph.D
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