[gpfsug-discuss] GPFS and Lustre

[Frank Kraemer]

Vic, Sergi,

from my point of view for real High-End workloads the complete I/O stack
needs to be fine tuned and well understood in order to provide a good
system to the users.

- Application(s)
+ I/O Lib(s)
+ MPI
+ Parallel Filesystem (e.g. GPFS)
+ Hardware (Networks, Servers, Disks, etc.)

One of the best solutions to bring your application very efficently to work
with a Parallel FS is Sionlib from FZ Juelich:

Sionlib is a scalable I/O library for the parallel access to task-local
files. The library not only supports writing and reading binary data to or
from from several thousands of processors into a single or a small number
of physical files but also provides for global open and close functions to
access SIONlib file in parallel. SIONlib provides different interfaces:
parallel access using MPI, OpenMp, or their combination and sequential
access for post-processing utilities.

http://www.fz-juelich.de/ias/jsc/EN/Expertise/Support/Software/SIONlib/_node.html
http://apps.fz-juelich.de/jsc/sionlib/html/sionlib_tutorial_2013.pdf

-frank-

P.S. Nice blog from Nils

https://www.ibm.com/developerworks/community/blogs/storageneers/entry/scale_out_backup_with_tsm_and_gss_performance_test_results?lang=en

Frank Kraemer
IBM Consulting IT Specialist  / Client Technical Architect
Hechtsheimer Str. 2, 55131 Mainz
mailto:kraemerf at de.ibm.com
voice: +49171-3043699
IBM Germany