What is HARC?

Note: After ten years of service to the national science and engineering community, the TeraGrid project has ended. It is succeeded by a new National Science Foundation (NSF) program, the Extreme Science and Engineering Discovery Environment (XSEDE). You should move any data stored on TeraGrid systems to an alternate storage resource. If you have leftover service units on your TeraGrid allocation, or if your research requires further use of high performance computational, visualization, storage, and network resources, consider applying for an allocation on one or more XSEDE digital services.

HARC (Highly Available Resource Co-allocator) is a system for creating and managing resource reservations. Multiple reservations are made in a single, atomic step. The most common use of HARC is to make advance reservations on multiple supercomputers, for use in a single MPICH-G2 or MPIg metacomputing job. However, HARC is not limited to compute resources (or to making reservations that have the same start time and duration).

For more on HARC, see the Louisiana State University (LSU) HARC page.

For more on reserving multiple resources, see What is co-scheduling, and does XSEDE support it?.

This document was developed with support from National Science Foundation (NSF) grant OCI-1053575. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the NSF.

This document was developed with support from the National Science Foundation (NSF) under Grant No. 0503697 to the University of Chicago and subcontracted to Indiana University. Additional support was provided by IU through its participation in the TeraGrid, which is supported by the NSF under Grants No. 0833618, SCI451237, SCI535258, and SCI504075. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the NSF.

Comments/Questions/Corrections