The National Science Foundation has approved the Phase 2 upgrade of the new Bridges supercomputer it funded at PSC. The enhanced system offers more speed, memory and data storage for investigators who have used supercomputers and those in fields that never before needed them.

The Phase 2 Upgrade of the Bridges supercomputer at the Pittsburgh Supercomputing Center (PSC) has been approved by the National Science Foundation (NSF), which funded the project. The approval makes new Bridges hardware, introduced as a technical upgrade, available for research allocations to the national scientific community.

The new upgrades increase the number of nodes available on the system and expand its data storage capacity. New nodes introduced in this upgrade include two with 12 TB (terabytes) of random-access memory (RAM), 34 with 3 TB of RAM, and 32 with two NVIDIA Tesla P100 GPUs. The configuration of Bridges, using different types of nodes optimized for different computational tasks, represents a new step to provide powerful “heterogeneous computing” to fields that are entirely new to high performance computing (HPC) as well as to “traditional” HPC users.

“Bridges’ new nodes add large-memory and GPU resources that enable researchers who have never used high performance computing to easily scale their applications to tackle much larger analyses,” says Nick Nystrom, principal investigator in the Bridges project and Senior Director of Research at PSC. “Our goal with Bridges is to transform researchers’ thinking from ‘What can I do within my local computing environment?’ to ‘What problems do I really want to solve?’”

“Bridges is a national computing resource and project uniquely configured to support ‘Big Data’ capabilities at scale as well as HPC simulations,” says Irene Qualters, the director of the NSF’s Office of Advanced Cyberinfrastructure. “It explores coherence of these two computing modalities within a reliable and robust platform for science and engineering researchers, and through its participation in XSEDE, it promotes interoperability, broad access and outreach that encourages workflows and data sharing across and beyond research cyberinfrastructure.”

  • The large-memory 12 and 3 TB nodes, featuring new “Broadwell” Intel Xeon CPUs, greatly expand Bridges’ capacity for DNA sequence assembly of large genomes and metagenomes (collections of genomes of species living in an environment); execution of applications implemented to use shared memory; and scaling analyses using popular research software packages such as MATLAB, R, and other high-productivity programming languages.
  • The GPU nodes provide the research community with early access to P100 GPUs and significantly expand Bridges’ capacity for “deep learning” in artificial intelligence research and accelerating applications across a wide range of fields in the physical and social sciences and the humanities.
  • The upgrade increases Bridges’ long-term storage capacity to 10 PB (petabytes, or thousands of terabytes), strengthening Bridges’ support for community data collections, advanced data management and project-specific data storage.
  • The complete technical specification of Bridges is available at

Together with the already operational Phase 1 hardware, the Phase 2 upgrade increases Bridges’ speed to 1.35 Pf/s (Petaflops, or quadrillions of 64-bit floating-point operations per second)—about 29,000 times as fast as a high-end laptop. The upgrade also expands the system’s total memory, to 274 TB (or trillions of bytes)—about 17,500 times the RAM in a high-end laptop.