LI81607: UNABLE TO MAP DERIVED TYPES TO GPU DEVICE IN OPENMP DECLARE TARGET

APAR status

• Closed as program error.

Error description

• When using derived types required by device functions it ends
  with a warning messages.
  
  
  
  ===== COMPILE COMMAND:
  mpixlf -qsmp=omp -qoffload -c getminmax.f90
  
  
  
  ===== TESTCASE:
  $ cat getminmax.f90
  MODULE FOO
  !====================================
  USE iso_c_binding
  
  !$omp declare target
  
  TYPE maxloc_type
  REAL(c_double) :: maxval = -1.0D100
  INTEGER(c_int), DIMENSION(3) :: maxindex = (/0,0,0/)
  END type maxloc_type
  
  TYPE minloc_type
  REAL(c_double) :: minval = 1.0D100
  INTEGER(c_int), DIMENSION(3) :: minindex = (/0,0,0/)
  END type minloc_type
  
  
  ===== ACTUAL OUTPUT:
  "" 1586-367 (I) "minloc_type__xlf_minindex0" referenced global
  symbol not marked declare target.
  "" 1586-367 (I) "maxloc_type__xlf_maxindex0" referenced global
  symbol not marked declare target.
  
  
  ===== EXPECTED OUTPUT:
  Should compile cleanly
  

Local fix

• N/A
  

Problem summary

• USERS AFFECTED:
  Users who use derived types required by device functions in
  their testcases are affected by this issue.
  
  PROBLEM DESCRIPTION:
  The comiler is saying that the optimizer found that this temp
  is needed on the device and so it made it available on the
  device; and hence issues the informational message.
  

Problem conclusion

• The compiler optimizer has been corrected to fix this scenario.
  

Temporary fix

Comments

APAR Information

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

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

Fix information

• Fixed component name

  XL FORTRAN LINU

• Fixed component ID

  5725C7510

Applicable component levels