BlueM General Information
BlueM is a unique high performance computing system from IBM. The overall specifications are:
|Teraflop rating||154 teraflops. (Roughly 7xRA)|
One of the unique characteristics of this machine is its small footprint both in physical size and energy usage. It requires only 85 kW. The new machine occupies a total of five racks, requiring only 3 compute racks, a management rack, and a file system rack.
The new IBM Supercomputer is also unique in configuration. It contains two independent compute partitions that share a common file system. The combined compute partitions and their file system is known collectively as BlueM.
The two partitions are built using different architectures. The first partition, known as Mc2 (Energy), runs on an IBM BlueGene Q (BGQ). The second partition, known as Aun (Golden), uses the iDataplex architecture. Each of the architectures is optimized for a particular type of parallel application.
Mc2, the IBM BlueGene Q is designed to handle programs that can take advantage of large numbers of compute cores. Also, the BGQ is designed to run applications that use multiple levels of parallelism, such as combining threading and message passing. Multilevel parallelism is expected to be the dominant paradigm in the future of HPC.
Our BGQ contains 512 nodes with each node having 16 cores. It has 8.192 terabytes of memory and a peak computational rate of 104.9 teraflops. The BGQ rack is currently half populated. That is, there is room for an additional 512 nodes within the same cabinet.
MC2 (Energy) Specifications
|Blue Gene Q||New Architecture|
|PowerPC A2 17 Core||Designed for large core count jobs|
|512 Nodes||Highly Scaleable|
|8,192 Cores||Multilevel parallelism - Direction of HPC|
|8,192 Gbytes||Room to Grow|
|104 Tflops||Future looking machine|
Blue Gene Ported Codes
The processors on the Blue Gene are in a different family from those on RA and Mio and the network is significantly different. Code will need to be recompiled to run on Mc2. We have below two lists of programs and libraries that have been built on other Blue Gene machines. Some of the listed items are from a earlier model of the Blue Gene, the “P”. Some listed have been ported but there has not been a high level of optimization performed
Aun, based on the IBM iDataplex platform, is designed to handle applications that may require more memory per core. The nodes employ the x86 Sandy Bridge generation architecture. Each of the 144 nodes has 64 Gbytes of memory and 16 processors for a total of 2,304 cores and 9.216 terabytes of memory.
Aun uses the same compiler suite as CSM’s Mio Supercomputer. Many application that are being run on these machines today could run on the new machine without a recompile. However, because of the updated processor instruction set available on the new machine we would expect improved performance with a recompile.
Aun (Golden) Specifications:
|iDataPlex||Latest Generation Intel Processors|
|Intel 8x2 core SandyBridge||Large Memory / Node|
|144 Nodes||Common architecture|
|2,304 Cores||Similar user environment to RA and Mio|
|9,216 Gbytes||Quickly get researchers up and running|