[MITgcm-support] Optimal System/CPUtype for MITgcm?

[m. r. schaferkotter]

greetings;

of late we/ve been less than enthused about the MITgcm performance on  
Cray XT4 Opteron quadcore system.

given the opportunity of choice of system/cputype pair, i would be  
most interested in community views regarding
the model performance on the system/cputype pairs below:

which system/cputype would give best performance (speed)?
which system/cputype should be avoided?


SYSTEM                          CPUtype

HP XC                                       Opteron
SGI Altix 3700                          Itanium 2
SGI Altix 4700                          Dual-Core Intel 2

IBM Cluster 1350                    Opteron
Linux Networx ATC                 Intel Dempsey
Linux Networx ATC                 Intel Woodcrest
Linux Networx Evolocity II      Intel Xeon EMT64T
Linux Networx LS-V                Opteron

Sun Fire X2200                        Opteron
Sun Fire X4600                        Opteron

Cray XT3                                   Opteron
Crat XT4                                    Opteron

Dell PowerEdge 1955             Intel Woodcrest
Cray XD1                                   Opteron

IBM P5+ Power5+                   Opteron
Cray XT5                                  Opteron
IBM Power6                             Power6
IBM P575+                               Power5+


m. r. schaferkotter