LI77239: WARNING MESSAGE WHEN MAX CPU_ID TO STARTPROC

February 2013 Update for XL Fortran for Blue Gene/Q, V14.1

APAR status

• Closed as program error.

Error description

• Run of the OMP program will output the following warning
  messages, when "startproc=<max cpu_id>" is specified as a
  XLSMPOPTS environment variable:
  
  1587-121 SMP runtime library error. Could not bind thread to
  processor 1.
  1587-106 The value 1 specified for option 'STARTPROC' is not in
  the valid range 0 to 1. All SMP run-time options have been set
  to their default values.
  
  
  
  The following sample program demonstrates the problem:
  
  $ cat t01.f
          program main
          parameter(n=4096)
          real*8 a(n),b(n),c(n)
  
  C$OMP PARALLEL DO
  C$OMP&  SCHEDULE(STATIC)
  C$OMP&  PRIVATE(I)
          do i=1,n
          a(i) =0.0d0
          b(i) =1.0d0
          c(i) =3.0d0
          end do
  C$OMP END PARALLEL DO
          call sub(a,b,c,n)
          stop
          end
  
          subroutine sub(a,b,c,n)
          integer n
          real*8 a(n),b(n),c(n)
          return
          end
  
  
  Compile as:
  
  xlf_r -O2 -qsmp=omp -o t01 t01.f
  
  
  Run the t01 binary, where he maximum of cpu_id is specified as
  "startproc":
  
  
  $ export XLSMPOPTS="startproc=1"
  $ export OMP_NUM_THREADS=1
  $ ./t01
  1587-121 SMP runtime library error. Could not bind thread to
  processor 1.
  1587-106 The value 1 specified for option 'STARTPROC' is not in
  the valid range 0 to 1. All SMP run-time options have been set
  to their default values.
  

Local fix

• N/A
  

Problem summary

• Program issues warning 1587-121 SMP runtime library error.
  Could not bind thread to processor 1.
  

Problem conclusion

• The problem had been fixed.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IV33191

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  XL FORTRAN FOR

• Fixed component ID

  5799AH100

Applicable component levels

• RE10 PSN IV33191

     UP06/09/13