November version of the CPU OpenCL driver does not work with TBB from beta10

[fwyzard]

The latest experimental CPU OpenCL (oclcpuexp-2020.11.11.0.04_rel.tar.gz from the November 6th release of the oneAPI DPC++ Compiler dependencies is not compatible with the latest version v2021.1-beta10 of TBB.

After setting up the experimental CPU OpenCL runtime following the GetStartedGuide, clinfo -l does not show the CPU runtime:

$ clinfo -l
Platform #0: Intel(R) OpenCL HD Graphics
 `-- Device #0: Intel(R) Gen9 HD Graphics NEO

Trying to load libintelocl.so results in an error:

$ LD_PRELOAD=/opt/intel/oclcpuexp/x64/libintelocl.so /bin/true
/bin/true: symbol lookup error: libtask_executor.so.2020.11.11.0: undefined symbol: _ZN3tbb6detail2r114notify_waitersEm

In fact, none of the libraries from the TBB distribution provide that symbol:

 $ nm -A /opt/intel/oneapi/tbb/2021.1-beta10/lib/intel64/gcc4.8/*.so | grep notify_waiters
/opt/intel/oneapi/tbb/2021.1-beta10/lib/intel64/gcc4.8/libtbb_debug.so:000000000003f9a6 t _ZN3tbb6detail2d112wait_context14notify_waitersEv
/opt/intel/oneapi/tbb/2021.1-beta10/lib/intel64/gcc4.8/libtbb_debug.so:0000000000076edc r _ZN3tbb6detail2d112wait_context14notify_waitersEv$$LSDA
/opt/intel/oneapi/tbb/2021.1-beta10/lib/intel64/gcc4.8/libtbb_debug.so:000000000003fd49 T _ZN3tbb6detail2r114notify_waitersERNS0_2d112wait_contextE

It looks like the symbol is defined in the master branch of TBB.
Are there any corresponding binary releases ?

[AlexeySachkov]

Tagging @vladimirlaz to comment

[vladimirlaz]

https://github.com/oneapi-src/oneTBB/releases/tag/v2021.1.1 should work.

[fwyzard]

Thanks, I can confirm that they work with TBB v2021.1.1 .