Public bug reported: Executing any of the clblas.gemm functions in libclBLAS.so.2.12.0 (libclblas2 2.12-1build1 on bionic) aborts the calling program with this error message:
OpenCL error -11 [...] clblas-2.12/src/library/blas/xgemm.cc:244: void makeGemmKernel(_cl_kernel**, cl_command_queue, const char*, const char*, const unsigned char**, size_t*, const char*): Assertion `false' failed. The error occurs when the backend is an OpenCL 1.1 device. This includes all GPUs supported by libclc through mesa-opencl-icd (Clover), that is effectively all AMD GPUs. The error can be easily reproduced by running the example from the upstream README.md[1] on a machine with an AMD GPU, with environment entry OCL_ICD_VENDORS=mesa.icd. This bug also affects all BLAS functionality in libarrayfire-opencl3, as can be seen by running e.g. examples/benchmarks/blas or any of the lin_algebra examples from the libarrayfire-doc package. The good news is, there is a fix :-) I have submitted this PR[2] upstream, and am attaching a dquilt-ready patch as upstream releases (and even pulls to master) are very infrequent. [1] https://github.com/clMathLibraries/clBLAS#example [2] https://github.com/clMathLibraries/clBLAS/pull/342 ** Affects: clblas (Ubuntu) Importance: Undecided Status: New ** Patch added: "Patch removes the -cl-std kernel build option" https://bugs.launchpad.net/bugs/1816887/+attachment/5240444/+files/remove-cl-std-build-option ** Description changed: Executing any of the clblas.gemm functions in libclBLAS.so.2.12.0 (libclblas2 2.12-1build1 on bionic) aborts the calling program with this error message: OpenCL error -11 [...] clblas-2.12/src/library/blas/xgemm.cc:244: void makeGemmKernel(_cl_kernel**, cl_command_queue, const char*, const char*, const unsigned char**, size_t*, const char*): Assertion `false' failed. The error occurs when the backend is an OpenCL 1.1 device. This includes all GPUs supported by libclc through mesa-opencl-icd (Clover), that is effectively all AMD GPUs. The error can be easily reproduced by running the example from the upstream README.md[1] on a machine with an AMD GPU, with environment - entry OCL_ICD_VENDORS set to mesa.icd. + entry OCL_ICD_VENDORS=mesa.icd. This bug also affects all BLAS functionality in libarrayfire-opencl3, as can be seen by running e.g. examples/benchmarks/blas or any of the lin_algebra examples from the libarrayfire-doc package. - The good news is, the fix is simple. I have submitted this PR[2] + The good news is, there is a fix :-) I have submitted this PR[2] upstream, and am attaching a dquilt-ready patch as upstream releases (and even pulls to master) are very infrequent. [1] https://github.com/clMathLibraries/clBLAS#example [2] https://github.com/clMathLibraries/clBLAS/pull/342 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1816887 Title: clBLAS aborts with OpenCL Error -11 in makeGemmKernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/clblas/+bug/1816887/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
