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Diffstat (limited to 'release_docs/RELEASE.txt')
| -rw-r--r-- | release_docs/RELEASE.txt | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index 0f18f6f..51a73ce 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -1158,6 +1158,28 @@ Platforms Tested Known Problems ============== + When HDF5 is compiled with NVHPC versions 23.5 - 23.9 (additional versions may + also be applicable) and with -O2 (or higher) and -DNDEBUG, test failures occur + in the following tests: + + H5PLUGIN-filter_plugin + H5TEST-flush2 + H5TEST-testhdf5-base + MPI_TEST_t_filters_parallel + + Since these tests pass with an optimization level of -O1 (and -O0) and it is + currently unclear whether the test failures are due to issues in HDF5 or issues + in the 'nvc' compiler, the maximum optimization level for NVHPC has been set + to -O1 until the test failures can be resolved. Note that even at -O1 optimization + level, there still appears to be a sporadic test failure in the Java JUnit tests + that has occasionally been seen in JUnit-TestH5Pfapl and JUnit-TestH5D. It is also + unclear whether this is an issue in HDF5 or with the 'nvc' compiler. Finally, note + that NVHPC 23.9 will fail to compile the test/tselect.c test file with a compiler + error of 'use of undefined value' when the optimization level is -O2 or higher. + Nvidia is aware of this issue and has suggested lowering the optimization level to + -O1 for the time being: + https://forums.developer.nvidia.com/t/hdf5-no-longer-compiles-with-nv-23-9/269045. + IEEE standard arithmetic enables software to raise exceptions such as overflow, division by zero, and other illegal operations without interrupting or halting the program flow. The HDF5 C library intentionally performs these exceptions. |