OSC’s newest system, an HP-built, Intel® Xeon® processor-based supercomputer dubbed the Oakley Cluster, features more cores (8,328) on half as many nodes (694) as the center’s former flagshipsystem, the IBM Opteron 1350 Glenn Cluster. The Oakley Cluster can achieve 88 teraflops, tech-speak for performing 88 trillion floating point operations per second, or, with acceleration from 128 NVIDIA® Tesla graphic processing units (GPUs), a total peak performance of just over 154 teraflops.
Detailed system specifications:
- 8,328 total cores
- 12 cores/node & 48 gigabytes of memory/node
- Intel Xeon x5650 CPUs
- HP SL390 G7 Nodes
- 128 NVIDIA Tesla M2070 GPUs
- 873 GB of local disk space in '/tmp'
- QDR IB Interconnect
- Low latency
- High throughput
- High quality-of-service.
- Theoretical system peak performance
- 88.6 teraflops
- GPU acceleration
- Additional 65.5 teraflops
- Total peak performance
- 154.1 teraflops
- Memory Increase
- Increases memory from 2.5 gigabytes per core to 4.0 gigabytes per core.
- Storage Expansion
- Adds 600 terabytes of DataDirect Networks Lustre storage for a total of nearly two petabytes of available disk storage.
- System Efficiency
- 1.5x the performance of former system at just 60 percent of current power consumption.
How to Connect
To connect to Oakley, ssh to oakley.osc.edu.
Refer to the documentation for our batch environment to understand how to use PBS on OSC hardware. Some specifics you will need to know to create well-formed batch scripts:
- Compute nodes on Oakley are 12 cores/processors per node (ppn). Parallel jobs must use
- If you need more than 48 GB of RAM per node, you may run on one of the 8 large memory (192 GB) nodes on Oakley ("bigmem"). You can request a large memory node on Oakley by adding the following directive to your batch script:
#PBS -l mem=192GB
- We have a single huge memory node ("hugemem"), with 1 TB of RAM and 32 cores. You can schedule this node by adding the following directive to your batch script:
#PBS -l nodes=1:ppn=32. This node is only for serial jobs, and can only have one job running on it at a time, so you must request the entire node to be scheduled on it. In addition, there is a walltime limit of 48 hours for jobs on this node.
nodes=1:ppn=32with a walltime of 48 hours or less, and the scheduler will put you on the 1 TB node.
- GPU jobs may request any number of cores and either 1 or 2 GPUs.
Using OSC Resources
For more information about how to use OSC resources, please see our guide on batch processing at OSC. For specific information about modules and file storage, please see the Batch Execution Environment page.