Tag: Instruction set architectures

Sun SPARC T3 Servers

Oracle announced their new line of Sun SPARC T3 powered servers at Oracle Openworld 2010. The SPARC T3 processor includes several improvements on T2 and T2+ processors including:

T2 / T2+T3
65 nm manufacturing process40 nm manufacturing process
4MB L2 Cache6MB L2 Cache
8 Cores (8 threads/core)16 Cores (8 threads/core)
8 Crypto Accelerators (1/core)16 Crypto Accelerators (1/core)
DDR2 FB-DIMMsDDR3
1 On Board PCIe x8 v1 Port2 On Board PCIe x8 v2 Ports

It is interesting to note that the T2 processor was only used in single socket systems. The T2+ processor removed the T2’s on board 10 GbE ports and other components to make room for the SMP glue. With the T3 processors, the 10 GbE ports have returned and the chip has built in glueless support for 4 way servers.

All in all they have packed more T-Series goodness in a smaller package but I’m not making goo-goo eyes yet.

For one, the smallest T3 based server, the T3-1, has the same number of threads as the T5140 but takes twice as many rack units. Although the T3-1 supports more PCIe cards and more internal hard disks, I would rather have a 1RU server or else have it support twice as much RAM.

The T3-2 server supports 256 threads. Compared to the T5440, it is actually smaller at 3RU and uses less power which sounds like a step in the right direction. Unfortunately, the T3-2 is also light on RAM supporting a maximum of 256GB compared to the T5440’s 512GB.

In short, The T3 series is a little off course for me at the moment. As a platform for consolidating tens of smaller applications, the thread to RAM ratio is too low making it hard to get 100% utilization out of these servers. With the T3-4 servers loading even more processing power into a single machine, the thread to machine ratio high as well. This is good if you are running a few really huge applications but if you are consolidating many smaller applications, you will not want to put this many eggs in one basket.

Oracle’s New Line of Sun x86 Servers

Oracle just announced a new line of Nehalem based x86 servers and they are beasts:

Interesting to note: the x4450, my previous favorite due to being the only 2RU 4 socket Xeon I’m aware of has a new big brother- the Sun x4470. It seems they couldn’t get 4 7500 series Nehalems in 2RUs or else they realized that no one could compete with them in 3 RUs so why bother.
http://www.oracle.com/us/products/servers-storage/servers/x86/sun-fire-x4470-server-077286.html

Also interesting is the 5 rack unit Sun x4800 which supports 8 Nehalem 7500 series processors, up to 64 cores, hot-swappable IO cards, 1TB of RAM and has built in NEMs (borrowing from blade tech it seems). A fully loaded server runs about 3KW at 100% utilization according to the power calculator which is more than a similarly configured (much more reliable) M5000 but in half the rack space:
http://www.oracle.com/us/products/servers-storage/servers/x86/sun-fire-x4800-server-077287.html

Also interesting is widespread support for all types of SSD and Flash memory modules in this line, and the additional RAS capabilities coming to the x86 line with the new Nehalem processors.

The long and short of it for me seems to be that the machines are beasts but power hungry beasts. None of the lower power Nehalems really seem to be on the table. Until we see prices, it will be hard to tell if these are worth the pdf’s their printed on.