Some information about the GPU & GRAPE Clusters of the Stellar Populations and Dynamics Research Group in Bonn

Copyright 2004- Holger Baumgardt (since Feb. 2010 at the University of Queensland, Brisbane)
with additions by P.Kroupa (Feb.2010)

News

01-11-2008 4 more GPUs installed

01-07-2008 2 GPUs, acquired via NVIDIA partnership program, are running

26-04-2007 2 GRAPE-BLX64 installed

10-07-2005 2nd MicroGRAPE and GRAPE6-Pro/8 have first light in Bonn

15-09-2004 First MicroGRAPE is running


View of MicroGRAPE installed in PCI slot

Click here to see performance of different GRAPEs with a Leapfrog integrator, an N-body integrator, and a Tree code

Current status

2 GeForce 8800 GT GPUs running on Dual Core AMD Opteron (apsi and bapsi)
2 GeForce 9800 GX2 GPUs running on Four Core Intel Xeon (cipsi and dipsi)
2 GTX 280 GPUs running on Four Core Intel Xeon (eipsi and fipsi)

2 MicroGRAPEs running on 3.2 GHz Pentium P4 (grape0 and grape1)
1 GRAPE6-Pro/8 running on a 3.0 GHz Pentium P4 (bgrape0)
2 GRAPE BLX64 running on 2.4 GHz Core 2 Duo (grape2 and grape3)

To access them you first have to login in to mportal and then make an rsh connection to one of the above machines
(flags for MicroGRAPE: -L/usr/lib -lg6a, full Grape: -L/usr/include/ -lg6lx, BLX64: -L/usr/lib -lg6bx -lxhib)

Software

A simple leapfrog integrator leapfrog.f written in FORTRAN

Software is available at the page of Prof. Dr. June Makino. A paper describing the features of a pC++tree program by June Makino can be found here.

Sverre Aarseth's NBODY4 for studying star cluster dynamics

The Kira N-body integrator, which is part of the Starlab software package

Naohito Nakasato's SPH code running on GRAPE-6 computers (email: nakasato at riken.jp)