About Open64

Open64 is the final result of research contributions from a number of compiler groups around the world. Formerly known as Pro64, Open64 was initially created by SGI and licensed under the Opens external link in new window

GNU Public License (GPL). It was derived from SGI's MIPSPro compiler.

Open64 also derives from work done by Intel Corp, in conjunction with the Chinese Academy of Sciences. They created the Opens external link in new window

Open Research Compiler (ORC), a specially modified version of Open64 with custom modifications for researchers. These changes were later folded back into the main Open64 source tree in 2005.

Open64 has been retargetted to a number of architectures. Pathscale modified Open64 to create Opens external link in new window

EkoPath, a compiler for the AMD64 architecture. The University of Delaware's Computer Architecture and Parallel Systems Laboratory (CAPSL) modified Open64 to create the Opens external link in new window

Kylin Compiler, a compiler for Intel's X-Scale architecture. CAPSL and Hewlet-Packard are currently working on Osprey, a project to replace Open64's front end (derived from GCC 2.95's frontend) with the current GCC front end.

The Open64 compiler suite currently includes compilers for C, C++, and Fortran90/95 compilers for the IA-64 Linux ABI and API standards. Open64 is currently in version 4.0. Professor Guang Gao and CAPSL at the University of Delaware are the current gatekeepers of the project.