Hi Tom,
From the reference below, 18 benchmarks are
characterized; viewgraph 15 and 16 show the
"Message call count". Of the 18 benchmarks, none
use MPI_Alltoall or MPI_Alltoallv. Now, if the
suite has been amended with benchmarks using
MPI_Alltoall, we're only lacking benchmarks using MPI_Alltoallv.
And to be precise, I do not search for said
benchmarks personally; my intent was to underline
that this dimension was missing from the 18
(initial) benchmarks in the MPI2007 suite.
Thanks, Håkon
At 18:44 25.04.2007, Tom Elken wrote:
Hi Håkon,
you wrote:
----------------
I just read http://www.spec.org/workshops/2007/austin/slides/SPEC_MPI2007.pdf
I am lacking applications using MPI_Alltoall and
MPI_Alltoallv - these are important dimensions
to evaluate. Anyone who knows about any suitable benchmark candidates?
Thanks, Håkon
----------------
Thanks for the publicity on the forthcoming
cluster-relevant benchmark-suite from SPEC. It
is due to be launched at ISC'07 in Dresden in
late June. I am on the SPEC HPG committee that
is developing the SPEC MPI2007 benchmark suite,
and we would welcome more members to participate
in developing these benchmarks, including Scali :)
Are you lacking "applications using MPI_Alltoall
and MPI_Alltoallv" or are you pointing out their lack in MPI2007?
Thanks for pointing this out to us. I did some
searching and a molecular dynamics code named
CPMD and a weather code named Hirvda (an
"operational weatherforcast used by several
weather centers in Europe") both use MPI_Alltoall extensively.
I hope these applications will suit your
needs. If others on the list can suggest more
of these types of applications, that would be great.
It is too late for adding candidate codes for
the initial release of MPI2007 which ships with
what is called "medium" datasets. There are
plans for more scalable versions of the suite in
the future with at least Large and perhaps XL
datasets. With those releases there is the
possibility to add more codes, and we will
seriously consider codes that use MPI_Alltoall*.
Thanks,
Tom Elken
QLogic Corporation
--
Håkon Bugge
CTO
dir. +47 22 62 89 72
mob. +47 92 48 45 14
fax. +47 22 62 89 51
[EMAIL PROTECTED]
Skype: hakon_bugge
Scali - http://www.scali.com
Scaling the Linux Datacenter
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