Memory leak in ST6 post v.6.07 #1340
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stefanzieger
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Jan 2, 2025
It appears that changing the file extension from .ftn in v6.07 to .F90 in v7 triggered a memory leak in Intel's Fortran compilers. The issue occurs when mapping from a dynamically allocated array to a static array. GCC gfortran on the other hand will make sure that allocated arrays will be freed on exit of a subroutine. The leak is about 250B per grid point and subroutine call. This translates to 5MB per time step on a 2.5M proint grid. Updates ------- [x] Change array type from static to allocatalbe. [x] Explicitely add DEALLOCATE statements. [x] Move arrays with constantes to MODULE level. [x] Add checks for allocation status.
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Describe the bug
ST6 package is running out of memory on SMC grid with O(2.5M) points (or 3.9GB per MPI process) under development branch. No issues in version 6.07. It appears to be an issues related to Intel's legacy compiler
ifortand Intel's OneAPI compilerifx. No issues found with GCC compilergfortran.The text was updated successfully, but these errors were encountered: