Using and Administering

ckpt Subroutine

Purpose

Specify the ckpt subroutine in a FORTRAN, C, or C++ program to activate user-initiated checkpointing. Whenever this subroutine is invoked, a checkpoint of the program is taken.

C++ Syntax

  extern "C"{void ckpt();}

C Syntax

  void ckpt();

FORTRAN Syntax

  call ckpt()

Related Information

FORTRAN, C, and C++ programs can be compiled with the crxlf, crxlc, and crxlC programs, respectively. These programs are found in the bin subdirectory of the LoadLeveler release directory. See Ensure all User's Jobs are Linked to Checkpointing Libraries for information on using these compile programs.