< tool , parallel > (udb) KSR 's interactive source level debugger for serial and parallel programs written in KSR , Fortran , KSR C and KSR1 assembly language .
Udb is a source level debugger for testing and debugging serial and parallel programs; it is compatible with GDB and dbx . The user can direct udb either by typing commands or graphically through an X -based window interface; the latter provides simultaneous display of source code, I/O and instructions. For parallel programs, operations can be carried out per- thread .
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(1995-05-07)