E04WDF - UCL/ECON-CLUSTER GitHub Wiki

• If ifail=12, you need to increase the NAG internal memory allocation.

  1. Let mem0 be the initial internal allocation.
  2. Final allocation equals mem0 times rw(501).
  3. Solution: increase rw(501) as follows:

  ifail = -1
  call E04WCF(IW,LENIW,RW,LENRW,ifail)
  rw(501) = 10.0_nag_wp
  call E04WDF(...)
  

• That increases the allocation by a factor of 10.0

• To check memory allocation:

  ifail = 0
  call e04wff('System information yes',iw,rw,ifail)
  

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