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Darius is a 32-node cluster with InfiniBand QDR interconnections. It runs CentOS 5.4 (Linux kernel version 2.6), which is closely related to Red Hat Enterprise Linux. Its hostname is darius.mit.edu.

Installed software

software

location of source code

NAMD 2.7b2

/share/apps/NAMD_2.7b2_Source/Linux-x86_64-OpenMPI

Charm++ 6.2

/share/apps/charm-6.2.0/mpi-linux-x86_64-mpicxx

VMD 1.8.7

/share/apps/vmd-1.8.7/LINUXAMD64

AmberTools 1.4

/share/apps/amber11

CHARMM c35b2

not yet installed, source in /share/apps/c35b2

Performance

Wiki Markup
Using the 92 katom [ApoA1 benchmark|http://www.ks.uiuc.edu/Research/namd/performance.html] with NAMD 2.7, performance appears to compare very favorably with previously benchmarked clusters: its \[processor cores X time per step\] values (corresponding to the ordinate on the [figure|http://www.ks.uiuc.edu/Research/namd/apoa1_bench.png] on the linked page) vary from 1.8 sec (8 CPUs) to 2.1 sec (128 CPUs).
!apoa_bench_scan.png|thumbnail!

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