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Technologies

UltraSPARC T2 Plus fuer HPC

Ja, richtig, fuer HPC :-)  Die RWTH Aachen hat die UltraSPARC T2 ja ebenfalls schon als durchaus brauchbar befunden.  Aber jetzt gibt es in Kanada einen Cluster, der im Endausbau fast 10000 Threads fuer ca. 130 Forschungsgruppen in Kanada zur Verfuegung stellt - auf Basis von UltraSPARC T2 Plus.  Die Begruendung fuer die Hardware-Entscheidung: Durchsatz-Anforderungen sowie bessere Effizienz - sowohl innerhalb der CPU als auch im RZ.  Nachahmenswert, finde ich ;-)

Friday, June 27, 2008 | Technologies | Read More

Programmieren fuer Multicoresysteme

...ist nicht einfach.  Das weiss jeder, der es schon einmal versucht hat.  Und nachdem es inzwischen jedem klar ist, dass Leistungssteigerung nur durch Parallelisierung zu erreichen ist, beschaeftigen sich immer mehr auch grosse Gremien mit der Frage, wie man hier sowohl in Forschung als auch in der "Produktion von Software" sinnvoll vorgehen kann.  Ein interessanter Blog zu diesem Thema ueber einen Workshop mit dem Titel "from Petascale to Exascale" findet sich hier.  Der...

Friday, June 27, 2008 | Technologies | Read More

Installing OpenSolaris on the MAC

OpenSolaris 2008.05 Meet the MacBook Pro Brian has an excellent post about installing OpenSolaris on the MAC. As he notes he is "not the first to document this configuration (1). However, I wasn't successful with any of the other approaches I discovered. Maybe this was because it most cases they were using a pre-release build of OpenSolaris 2008.05. So, for what it's worth, here are the steps that led me to success... " Check it out here:  http://weblogs.java.net/blog/bleonard/...

Thursday, June 26, 2008 | Technologies | Read More

Sharing Folders

A key piece of software for many OpenSolaris 2008.05 users is VirtualBox.  Some use it to run OpenSolaris as a guest operating system, others install VirtualBox on OpenSolaris in order to run other operating systems as guests. I'll be writing more about VirtualBox in future posts and there is now a blog devoted to collecting posts about VirtualBox. There are some limitations to be aware of, particularly when running OpenSolaris as a guest operating system under VirtualBox. ...

Thursday, June 26, 2008 | Technologies | Read More

Querying IPS packages

Often you want to install some package in OpenSolaris but you don't know its name. It happens to me almost all the time - I know the binary I need (e.g. javac) but I have no idea in which package to find it. Honestly, the package names in OpenSolaris are not very easy to guess and right now I don't know about an online repository where to search for packages according to their contents (like I would use in case of Linux).  However there is a way how to search for a package...

Thursday, June 26, 2008 | Technologies | Read More

Some Power Management

There is some limited support for power management in OpenSolaris 2008.05, but by default it is not enabled (hopefully that will change in a future release).  There is an entry on the BigAdmin wiki page that describes the supported CPUs (from both Intel and AMD) and the simple steps for modifying the /etc/power.conf file.  But this blog entry from Mark Haywood provides quite a bit more information.  In it, he describes the CPU frequency scaling feature in detail. The feature...

Wednesday, June 25, 2008 | Technologies | Read More