Source: mpi4py Followup-For: Bug #1131533 Control: tags -1 help The str2bool error reported here appears to arise from a mismatch between the old mpi4py build against mpich 4, and the new mpich 5. MPICH is supposed to have ABI compatibility, so perhaps the error is a bug in the compatibility. But at the same time, MPI-5 (supported by mpich 5) is introducing a common MPI ABI (common with openmpi). Perhaps mpi4py was getting confused over which ABI it's working with. I'm not sure exactly.
To keep the build consistent, I uploaded mpi4py 4.1.1-3 to rebuild against mpich 5. With the rebuild, testGetFortranInfo is now passing on i386, as tested on porterbox (barriere): testGetFortranInfo (test_mpiabi.TestMPIABI.testGetFortranInfo) ... testGetFortranInfo (test_mpiabi.TestMPIABI.testGetFortranInfo) ... testGetFortranInfo (test_mpiabi.TestMPIABI.testGetFortranInfo) ... testGetFortranInfo (test_mpiabi.TestMPIABI.testGetFortranInfo) ... ok ok testGetInfo (test_mpiabi.TestMPIABI.testGetInfo) ... ok testGetVersion (test_mpiabi.TestMPIABI.testGetVersion) ... ok In fact all tests are passing successfully on barriere, with autopkgtest ending with: autopkgtest [16:29:40]: test mpi4py-test: -----------------------] autopkgtest [16:29:40]: test mpi4py-test: - - - - - - - - - - results - - - - - - - - - - mpi4py-test PASS autopkgtest [16:29:40]: @@@@@@@@@@@@@@@@@@@@ summary command1 SKIP unknown restriction hint-testsuite-triggers command1 SKIP unknown restriction hint-testsuite-triggers mpi4py-test PASS So in that sense, this bug is resolved by rebuilding mpi4py against mpich 5. However, on debci the tests are now hanging at test_cco_buf.TestCCOBufWorld.testAllreduce after hitting an ERROR in test_cco_buf.TestCCOBufWorld.testAllgather so debci fails on timeout, https://ci.debian.net/data/autopkgtest/testing/i386/m/mpi4py/69692323/log.gz I suspect the timeout in testAllreduce is indirectly triggered by the error in testAllgather. I can't see what the substantial difference between the two test environments is. Why are the same tests passing on barriere, but hitting an error and failing with timeout on debci? Help wanted.
