Regression Tests Crash When Compiled with GNU

[DavidHuber-NOAA]

Running the regression tests with hera.gnu compilers crashes for the following tests in the ncdiag module ncdw_metadata.f90, line 34 or 26 with an invalid memory reference seg fault or with an error that a netCDF file is locked and cannot be written to: global_3dvar, global_4dvar, and global_4denvar.

Also, the hwrf_nmm_d2 test fails with an invalid pointer error. The exact line for this error isn't clear from the backtrace, but may be located near setupbend:242, setupbend:743, setupbend:255. IntelMKL is also a possibility.

These were discovered during the testing of #571. It's possible that the hwrf_nmm_d2 test will be fixed by that PR, but not the global tests.

Also, the GNU build should be performed with OpenBLAS rather than Intel MKL.

[RussTreadon-NOAA]

@DavidHuber-NOAA , the GSI Handling Review team is going through GSI issues to see which, if any, may be closed. Do you know if this issue can be closed?

[DavidHuber-NOAA]

The tests still crash with GNU when compiled against spack-stack, so this is still an issue. Addressing this will likely fix some bugs in the code, so it may be worth keeping open.

[RussTreadon-NOAA]

Thank you @DavidHuber-NOAA for your reply. We can keep this issue open for the time being.

[RussTreadon-NOAA]

@DavidHuber-NOAA , what is the status of this issue?

[DavidHuber-NOAA]

I don't think I will have time to work on this -- I expect it to be a lengthy endeavor similar to the Intel 2020+ upgrade. However, I will try to address the GNU compiler warnings when upgrading to the Intel LLVM compilers. I will try running the GNU tests at that time and seeing if it resolves the issue.

[RussTreadon-NOAA]

Thank you @DavidHuber-NOAA for the update. I'll close this issue with a note added to GSI issue #665.