lanl / lanl/FEHM

stack overflow issue

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Dominant language
GLSL
Stars
68
Forks
24
PR merge metrics
No merged PRs in 30d

Description

User Guoyan (gyjiang@whu.edu.cn) encountered “stack overflow” problem when running a THM simulation using node count of 154395, same problem runs fine with node count of 52269. The simulation was carried out on a Windows 10 64-bit machine, with six installed memory sticks of DDR4 2933MHz 32GB, FEHM executable used is Version 3.4.0
Possible fix from George Zyvoloski: use trace back information, taking the array out of a subroutine call header and put the variable into a use module.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the FEHM 3.4.0 simulation on Windows with 52,269 and 154,395 nodes, then collect trace-back information for the stack overflow. Inspect the subroutine call headers and the related use modules, as suggested in the issue. Done means the larger simulation runs without the stack overflow.

Written by the indexing model from the issue text.

Assessment

Tech stack
fortran
Domain
hpc
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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