Margaret K. Butler

Margaret Butler programmed the first digital computers at Argonne National Laboratory in the early 1950s, helped design subsequent ones, and contributed to simulations of nuclear power reactors. Image: Argonne National Laboratory

The ALCF was established at Argonne National Laboratory in 2006 as part of a DOE initiative dedicated to enabling transformational advances in science and engineering by providing the most powerful supercomputers in the world for open scientific research.

The facility has grown leaps and bounds since its inception, developing and deploying leading-edge computing systems with unprecedented capabilities, while fostering an ever-growing user community that is pushing the boundaries of fundamental discovery and understanding in a broad range of scientific disciplines.

Supported by the Advanced Scientific Computing Research (ASCR) program within DOE’s Office of Science, the ALCF is one half of the DOE Leadership Computing Facility, which deploys to diverse high-performance computer architectures for open science (one at Argonne and one at Oak Ridge National Laboratory).

ALCF Continues a Tradition of Computing Innovation

In 1949, Argonne physicists needed computers to solve enormously complex mathematical problems. But these kinds of computers were not yet available commercially, so they built their own. Thus began the Argonne tradition of innovation in providing leading computing resources to the scientific community.

The seedbed for such groundbreaking software as MPI, PETSc, PVFS, GridFTP, and Cobalt, and as an essential partner in the development of some of the world’s premier supercomputers, Argonne’s historic stronghold at the forefront of scientific computing is undisputed.

Notable Activities


Supported 32 INCITE projects, 20 ALCC projects, and 8 ALCF Data Science Program projects
Expanded the Aurora Early Science Program to include data science and machine learning projects
Argonne hosted its first Quantum Computing Workshop
A team of Argonne/ALCF researchers received an R&D 100 award for the development of Darshan


Theta entered production mode on July 1, 2017
Supported more than 350 active projects, including 30 INCITE projects and 24 ALCC projects
Launched Aurora Early Science Program with the selection of 10 simulation-based projects
Expanded the ALCF Data Science Program with the addition of four new projects
Research on ALCF resources results in 200+ publications


Theta arrived
Kicked-off Argonne Data Science Program w/ 4 tier one projects
Supported 34 INCITE projects, 27 ALCC projects, and 160+ Director’s Discretionary projects
Research on ALCF resources resulted in 250+ publications


Announced our next-generation supercomputers, Aurora and Theta
Kicked-off Theta Early Science Program w/ 6 tier one projects and 6 tier two projects
Launched Cooley, a new visualization and analysis cluster with nearly eight times the memory capacity of the facility’s previous system, Tukey
Supported 37 INCITE projects, 24 ALCC projects and 190+ Director’s Discretionary projects
Research on ALCF resources resulted in 160+ publications


Supported 340+ active projects, including 40 INCITE projects and 18 ALCC projects
Supported 1,432 DOE facility users
Delivered 5.8 billion core-hours of compute time
Research on ALCF resources resulted in 150+ publications


Supported more than 300 active projects, including 37 INCITE projects and 9 ALCC projects
Supported 1,150 DOE facility users
Mira, the ALCF’s Blue Gene/Q supercomputer, went into production on April 9, 2013
Intrepid, the ALCF's Blue Gene/P supercomputer, was decommissioned on December 31, 2013
Delivered 4.79 billion core-hours of compute time
Research on ALCF resources resulted in more than 150 publications
Two ALCF publications receive Best Paper Awards
Four ALCF staff papers accepted to SC13, including a finalist for the Gordon Bell Prize


Supported 31 INCITE and 9 ALCC projects sponsored by the U.S. Department of Energy
Mira, the ALCF’s new Blue Gene/Q supercomputer, was delivered, installed and accepted
Mira was ranked the fourth fastest supercomputer in the world, according to the November 2012 TOP 500 list, and the second fastest supercomputer, according to the November 2012 Graph 500 list
16 Early Science Projects were first to gain access to Mira
Delivered 1.2 billion core-hours of science on Intrepid
Four ALCF staff members were part of a Gordon Bell finalist paper at SC12


Supported 30 INCITE projects and 7 ALCC projects sponsored by the Department of Energy
Planned facility enhancements for Mira, the next-generation Blue Gene/Q supercomputer
Supported 16 Early Science projects
Prepared for Tukey, our visualization system that will be twice as fast as its predecessor, Eureka
Delivered 1.2 billion core-hours of science
Four ALCF staff members were part of a Gordon Bell finalist paper that won a Honorable Mention at SC11


Began support of 35 INCITE projects and 10 ALCC projects sponsored by the Department of Energy
Signed contract for Mira, the next-generation Blue Gene/Q supercomputer
Selected 16 Early Science projects to run on the 10-petaflops Mira
Delivered more than 2 billion core-hours of science
Intrepid won the top spot in the first set of results published on the new Graph 500 benchmark at SC10


Intrepid, a 557-teraflops Blue Gene/P system, went into production
Began support of 28 INCITE projects
Approved for 10 petaflops system to be delivered in 2012 timeframe
Began joint Argonne/NERSC Magellan cloud project
Delivered 897 million core-hours of science


Increased to 20 INCITE projects
Begin support of Early Science and INCITE projects on Blue Gene/P
Intrepid (Blue Gene/P) won first place in RandomAccess and FFT benchmarks in HPC Challenge at SC08
Intrepid was initially ranked #4 on the Top500 list in June at ISC08


Increased to 9 INCITE projects
Continued development projects
Held Next Generation Blue Gene workshop (June)
Installed 100-teraflops Blue Gene/P (Oct.-Nov.)
Accepted 100-teraflops Blue Gene/P (Dec.)


The ALCF is officially established as a division at Argonne
Began production support of 6 INCITE projects
Continued code development and evaluation


Installed 5-teraflops Blue Gene/L for evaluation


Argonne and Oak Ridge are selected as the locations for the DOE Office of Science Leadership Computing Facilities after a competitive peer review of proposals
Formed the Blue Gene Consortium with IBM