[Lustre-discuss] MPI-Blast + Lustre
Charles Taylor
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.
Thanks,
Charlie Taylor
UF HPC Center
More information about the lustre-discuss
mailing list