FYI, the following worked: LD_PRELOAD=/soft/restricted/CNDA/sdk/2021.10.30.001/oneapi/compiler/pseudo-20211026/compiler/linux/lib/libsycl.so.5 libtbx.python modules/cctbx_project/simtbx/kokkos/tst_kokkos_lib.py But this seems like a total hack. I suspect that there is a Python-specific issue lurking here, where Python isn’t configured to load dependent *.so files. --Bill From: Ecp-aurora-sdk-discuss <[email protected]> On Behalf Of Hart, William E via Ecp-aurora-sdk-discuss Sent: Wednesday, December 15, 2021 12:44 PM To: Zhang, Junchao <[email protected]>; [email protected] Subject: Re: [Ecp-aurora-sdk-discuss] [EXTERNAL] Re: A sycl linking issue Hmmm. I tried this without luck. I’m linking libraries compiled with C++11 and C++17. Do you think that could be a root cause of this? This error occurs when importing a *.so file into python. So maybe I need to load the symbols from the sycl library first before loading that *.so file? (I’ve tried this without luck so far…) --Bill From: Zhang, Junchao <[email protected]<mailto:[email protected]>> Sent: Tuesday, December 14, 2021 10:34 PM To: Hart, William E <[email protected]<mailto:[email protected]>>; [email protected]<mailto:[email protected]> Subject: [EXTERNAL] Re: [Ecp-aurora-sdk-discuss] A sycl linking issue I met similar problems. It seems RPATH does not work. I had to set LD_LIBRARY_PATH to solve the problem. Maybe you can try that. Thanks -- Junchao Zhang From: Ecp-aurora-sdk-discuss <[email protected]<mailto:[email protected]>> on behalf of "Hart, William E via Ecp-aurora-sdk-discuss" <[email protected]<mailto:[email protected]>> Reply-To: "Hart, William E" <[email protected]<mailto:[email protected]>> Date: Tuesday, December 14, 2021 at 12:06 PM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: [Ecp-aurora-sdk-discuss] A sycl linking issue Hi, all: I’m seeing an unusual issue loading a shared object library on Arcticus, where a Sycl library doesn’t seem to be found while resolving symbols. I’m running a *.so file from Python on Arcitcus, and I’m getting a missing symbol error. Traceback (most recent call last): File "/home/ac.wehart/exafel/alcc-recipes/cctbx/modules/cctbx_project/boost_adaptbx/boost/python.py", line 22, in import_ext try: mod = __import__(name) ImportError: /home/ac.wehart/exafel/alcc-recipes/cctbx/build/lib/libsimtbx_kokkos.so: undefined symbol: _ZN2cl4sycl7handler24GetRangeRoundingSettingsERmS2_S2_ I’ve confirmed that the libsimtbx_kokkos.so file knows about the sycl library: ldd /home/ac.wehart/exafel/alcc-recipes/cctbx/build/lib/libsimtbx_kokkos.so linux-vdso.so.1 (0x00007fff01949000) libomptbx.so => not found libboost_thread.so.1.74.0 => not found libboost_system.so.1.74.0 => not found libboost_python37.so.1.74.0 => not found libimf.so => /soft/restricted/CNDA/sdk/2021.10.30.001/oneapi/compiler/pseudo-20211026/compiler/linux/compiler/lib/intel64_lin/libimf.so (0x00007fcfd5c4c000) libm.so.6 => /lib64/libm.so.6 (0x00007fcfd590b000) libscitbx_boost_python.so => not found libcctbx.so => not found libsycl.so.5 => /soft/restricted/CNDA/sdk/2021.10.30.001/oneapi/compiler/pseudo-20211026/compiler/linux/lib/libsycl.so.5 (0x00007fcfd5628000) Further, I’ve confirmed that the missing symbol is in this particular libsycl library: nm -o /soft/restricted/CNDA/sdk/2021.10.30.001/oneapi/compiler/pseudo-20211026/compiler/linux/lib/libsycl.so.5 | grep GetRang /soft/restricted/CNDA/sdk/2021.10.30.001/oneapi/compiler/pseudo-20211026/compiler/linux/lib/libsycl.so.5:00000000002b7270 T _ZN2cl4sycl7handler24GetRangeRoundingSettingsERmS2_S2_ Any clue what might be going on? --Bill -----Original Appointment----- From: Muralidharan, Servesh <[email protected]<mailto:[email protected]>> Sent: Tuesday, December 14, 2021 11:45 AM To: Muralidharan, Servesh; Hart, William E Subject: [EXTERNAL] CCTBX - ExaFEL Kickoff When: Thursday, December 16, 2021 4:00 PM-5:00 PM (UTC-06:00) Central Time (US & Canada). 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