For a detailed description of MPI Requirements see “Using ScaLAPACK Enhanced Routines” in the Introduction of this manual.
This routine exits ScaLAPACK mode for the IMSL Library routines. All processors in the BLACS context call the routine.
Required Arguments
ICTXT — The BLACS context ID to which the processor grid is associated. (Input)
FORTRAN 90 Interface
Generic: CALL ScaLAPACK_EXIT (ICTXT)
Description
Subroutine ScaLAPACK_EXIT exits ScaLAPACK mode for the IMSL Library routines. The following actions occur when this routine is called:
• BLACS_GRIDEXIT is called with the input BLACS context ID.
• The pointer to the grid ID, MP_PIGRID is nullified.
• If the grid, MP_IGRID, has been allocated, it is deallocated.
• MP_ICTXT is reset to its default value, HUGE(1).
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