Hi there,
We are building a small test cluster (5 nodes of 2x2dual-core opterons) for
doing some parallel file system research (probably mostly with pvfs2) and I'm
trying to gather info on a cost/time optimal setup. The cluster will also be
used for computation in atmospheric data reduction of fairly large files
(hence the interest in using a pfs). Most of the applications will be using
MPI-IO at some level (HDF5's parallel access, parallel netCDF).
It seems that more nodes will be better for I/O up to the point of saturation
of the backplane and/or interconnect.
For the interconnect technology, the lower-latency technologies such as
myrinet and IB are preferred, but is it possible to bond ethernets (initially
1GE, then later 10GE) to provide better thruput? Is it advisable to try this
or will the latency end up killing such an effort anyway?
Is there a downside to having IB on the motherboards anyway (besides the
cost)?
Pointers welcome.
--
Cheers, Harry
Harry J Mangalam - 949 856 2847 (vox; email for fax) - [EMAIL PROTECTED]
<<plain text preferred>>
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