ASCR Leadership Computing Challenge (ALCC)

ALCC Mission

The mission of the ASCR Leadership Computing Challenge (ALCC) is to provide an allocation program for projects of interest to the Department of Energy (DOE) with an emphasis on high-risk, high-payoff simulations in areas directly related to the DOE mission and for broadening the community of researchers capable of using leadership computing resources.

Call for Proposals

The Call for 2015 ALCC is now open. See Application Details for instructions on preparing your application. Applications for 2015 ALCC are due by 11:59 PM EST Tuesday February 3rd, 2015. Please submit your application to ALCC@science.doe.gov. Proposals undergo peer review and awards will be announced in May 2015. Allocations begin July 01, 2015.

ALCC supports projects that advance the DOE mission and further the goals of DOE program offices. For 2015 ALCC, projects of special interest to the DOE include the following:

  • Energy efficiency and the clean energy agenda.
  • Nuclear reactor safety and environmental management of nuclear waste.
  • Mesoscale materials science.
  • Predictive simulation of chemical processes.
  • Simulating the Dark Universe, Understanding the High Energy Higgs sector, Lattice Gauge theories probing beyond the Standard Model and other topics of importance to the DOE High Energy Physics Program.
  • Lattice QCD, low energy nuclear physics, and nuclear astrophysics problems of particular relevance to the experimental research programs at DOE Nuclear Physics facilities.
  • Advancing a robust predictive understanding and capability across scales and systems for Climate Science.
  • Advance Earth Science, Environmental Science, and Subsurface Technology particularly as relates to energy resources, the carbon cycle and sequestration, and environmental management.
  • Developing new solutions for Big Data intersections with leadership computing.
  • Broadening the community of researchers capable of using next generation leadership computing resources.
  • Exploration of new frontiers in physical, biological, and computational science.

Congratulations to our 2014 Awardees

For 2014, 42 awards were made totaling over 3 billion processor hours. For a listing of 2014 awarded projecst see Past Awards. For project summaries see the 2014 ALCC Factsheet.pdf file (637KB).

Overview of ALCC

Open to scientists from the research community in industry, academia, and national laboratories, the ALCC program allocates up to 30% of the computational resources at ASCR’s supercomputing facilities. ASCR supercomputing facilities include NERSC at Lawrence Berkeley National Laboratory and the Leadership Computing Facilities at Argonne and Oak Ridge National Laboratories. These resources represent some of the world’s fastest and most powerful supercomputers.

ALCC is one of several allocation programs for ASCR supercomputing facilities (see ASCR Allocation Policy.pdf file (23KB)) and supports our efforts to further DOE mission science and to broaden community access to leadership computing facilities. To fulfill its goal of broadening community access, ALCC supports a wide range of project allocation sizes and allocates time across all three ASCR supercomputing facilities.

ALCC grants one year awards. In 2013, 39 ALCC awards were granted, amounting to 1.8 billion processor hours with project sizes ranging from 3 to 250 million process hours. Scientific discovery advanced by ALCC allocations range across the DOE mission space include (but not limited to) energy efficiency, computer science, climate modeling, materials science, bioenergy, and basic research. (See ALCC Past Awards and Awardees).

ALCC Resources

ALCC allocates high performance computing time on the primary HPC machines at each ASCR facility. For a description of the computing resources at ASCR facilities, please see

See right side bar for more ALCC information links.

Last modified: 1/2/2015 4:09:22 PM