[Wrf-users] Low performance of cluster

jagan TNAU jagan at tnau.ac.in
Mon Oct 5 21:11:51 MDT 2009

Dear WRF Users,
We have purchased MAC 16 Xserve nodes 3.0 Ghz (2 x quad core} to setup a
mini cluster. The nodes are interconnected with 24 port gigabit switch to
the gigbit ethernet card of the machines. I am using MPICH2 for MPI and
Intel fortran compiler and compiled the WRF. When we tested for the
efficiency two nodes only perform better ie 20 % efficient than the single
node run. but when we started increasing the nodes and WRF run is made the
performance is poorer than the single node.

We made a good amount of browsing but we have not found a solution yet. All
suggestions are welcome.

With regards

Professor and Head
Agro Climate Research Centre,
Tamil Nadu Agricultural University,
Coimbatore - 641 003 India

PHONE: Off: 91-422-6611519 Res: 91-422-2453600
      Fax: 91-422-2430657 Mob: 91-94438 89891
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