The T2 is finally out!
The first systems, the Sun SPARC Enterprise T5120 and T5220 servers and the Sun Blade T6320, which are based on our new UltraSPARC T2 (aka Niagara 2) chip have finally been announced. Congratulations to all the teams involved!
Compared to the T1, T2 has several nice improvements. I'll only concentrate on two: 8, instead of 4, hardware threads per core (for an incredible total of 64 hardware threads per chip) and 1 FPU per core, instead of 1 FPU per chip (for a total of 8 FPUs per chip). This will give you even more parallelism, as well as much better FPU performance, compared to the T1.
Please check this blog entry for an overview of all the benefits of the UltraSPARC T2.
We, the HotSpot JVM development team, have been doing a lot of work to make sure that HotSpot runs as well as possible on the T2. And it shows. Check out the SPECjbb2005 results that we have published on Dave Dagastine's blog. We were particularly happy with the single JVM result that we got on T2, which is just over 10% worse than our best multiple JVM result.
Posted at 05:02PM Oct 09, 2007 by tony in Sun | Comments[0]