| Title | The Los Alamos Debugger (LDB) | 
| Revision | 1.3 | 
| Purpose | High performance debugging of large-scale scientific fortran programs. | 
| Package type | set of programs (ldb, klam) | 
| Application area | debugging | 
| Abstract | LDB addresses the debugging needs of the large-scale (million line) scientific code developer. Key features are fast conditional breakpoints and watchpoints through code instrumentation, integrated performance analysis and visualization, general purpose macros, source-level debugging via X window or command line interface, and execution tracing. | 
| Submittor | Jeffrey S. Brown | 
| Contact | Jeffrey S. Brown | 
| Phone | (505) 665-4655 | 
| jxyb@lanl.gov | |
| Company/ Institution  | Los Alamos National Laboratory | 
| CUG Site Code | LANL | 
| Distribution method | contact the following person: Jeffrey S. Brown | 
| URL | |
| Distribution restrictions | UNICOS sites only | 
| Copyright | not-for-resale or redistribution | 
| License required | no | 
| License fee | n.a. | 
| Hardware | cray xmp/ymp running unicos | 
| Operating System | UNICOS 6.0 | 
| Compiler(s) | scc | 
| Program support | when schedule permits, on a continuous basis for other DOE sites | 
| Documentation | README file, man pages, user guide, technical reference manual, ldb test suite | 
| Portability to other UNIX systems | some rewrite required (symbol tables, etc.) | 
| Additional comments | current work in progress (2.0 release): support for C, multitasking, array syntax |