[Lustre-discuss] MPI-Blast + Lustre
taylor at hpc.ufl.edu
Wed Dec 12 18:49:24 PST 2007
Anyone have any experience with MpiBlast and Lustre. We have
MpiBlast-1.4.0-pio and lustre-1.6.3 and we are seeing some pretty
poor performance with most of the mpiblast threads spending 20% to
50% of their time in disk wait. We have the genbank nt database
split into 24 fragments (one for each of our OSTs, 3 per OSS). The
individual fragments are not striped due to the ldlm_poold issue so
that should not be the problem.
Should we not be using the PIO (ROM-IO) version of MPIBlast w/ lustre?
I'm wondering if there are some already discovered guidelines for
using MPIBlast on top of Lustre that I'm not finding via google.
UF HPC Center
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