| ... | @@ -154,6 +154,8 @@ There are also hardware independent environment variables that gives us runtime |
... | @@ -154,6 +154,8 @@ There are also hardware independent environment variables that gives us runtime |
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| MPICH_VERSION_DISPLAY | `1`: prints MPI version on startup | 1 | Toggles printing of MPI version on startup. |
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| MPICH_VERSION_DISPLAY | `1`: prints MPI version on startup | 1 | Toggles printing of MPI version on startup. |
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| OMP_NUM_THREADS | [N] | 1 | Sets number of threads to use in parallel region. |
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| OMP_NUM_THREADS | [N] | 1 | Sets number of threads to use in parallel region. |
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| OMP_DISPLAY_ENV | <ul><li>`TRUE`: Display OpenMP version number and initial ICV values for the environment variables.</li><li>`FALSE`: Do not display anything.</li><li>`VERBOSE`: Also display the values of runtime variables that may be modified by vendor-specific environment variables.</li></ul> | VERBOSE | Display information on OpenMP and environment variables during runtime. |
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| OMP_DISPLAY_ENV | <ul><li>`TRUE`: Display OpenMP version number and initial ICV values for the environment variables.</li><li>`FALSE`: Do not display anything.</li><li>`VERBOSE`: Also display the values of runtime variables that may be modified by vendor-specific environment variables.</li></ul> | VERBOSE | Display information on OpenMP and environment variables during runtime. |
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| MPICH_DBG | ? | FILE | Generate for each MPI process a separate file, numbered by rank in MPI_COMM_WORLD. Alternatively set through compiler with `-mpich-dbg=file` |
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| MPICH_DBG_LEVEL | ? | VERBOSE | Generate for each MPI process a separate file, numbered by rank in MPI_COMM_WORLD. Alternatively set through compiler with `-mpich-dbg-level=verbose` |
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## Sources
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## Sources
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The sources used for this wiki page:
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The sources used for this wiki page:
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| ... | @@ -165,4 +167,5 @@ The sources used for this wiki page: |
... | @@ -165,4 +167,5 @@ The sources used for this wiki page: |
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- [FTN compiler options from KAUST](https://www.hpc.kaust.edu.sa/sites/default/files/files/public/1.03a-AdditionalInformation_CrayCompilationEnvironment.pdf)
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- [FTN compiler options from KAUST](https://www.hpc.kaust.edu.sa/sites/default/files/files/public/1.03a-AdditionalInformation_CrayCompilationEnvironment.pdf)
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- [FTN compiler options ECMWF Wiki](https://confluence.ecmwf.int/download/attachments/46600240)
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- [FTN compiler options ECMWF Wiki](https://confluence.ecmwf.int/download/attachments/46600240)
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- [OpenMP Environment Variables](https://www.openmp.org/spec-html/5.0/openmpch6.html)
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- [OpenMP Environment Variables](https://www.openmp.org/spec-html/5.0/openmpch6.html)
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- [Tools and Methods for ACC debugging](https://juser.fz-juelich.de/record/902543/files/3-Debugging--TH.pdf) |
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- [Tools and Methods for ACC debugging](https://juser.fz-juelich.de/record/902543/files/3-Debugging--TH.pdf)
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- [MPI debugging README](https://github.com/pmodels/mpich/blob/main/doc/wiki/design/Debug_Event_Logging.md) |
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