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Do you think that these messages can be an optimization error for executions on the CPU?
warning: <unknown>:0:0: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
warning: <unknown>:0:0: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
warning: <unknown>:0:0: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
warning: <unknown>:0:0: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
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Which analyzer did you run to get the message?
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I have OneAPI, FLANN and PointCloudLibrary with OneAPI support installed on my system.
# dpkg -l | grep oneapi
ii intel-oneapi-common-licensing-2024.0 2024.0.0-49406 all oneAPI Common License
ii intel-oneapi-common-oneapi-vars-2024.0 2024.0.0-49406 all oneAPI Common Toolkit Environment Script
ii intel-oneapi-common-vars 2024.0.0-49406 all oneAPI Common Environment Scripts
ii intel-oneapi-compiler-cpp-eclipse-cfg-2024.0 2024.0.2-49895 all Intel® oneAPI DPC++/C++ Compiler 2024.0.2 for Linux* eclipse integration configuration file (C++)
ii intel-oneapi-compiler-dpcpp-cpp-2024.0 2024.0.2-49895 amd64 Intel® oneAPI DPC++/C++ Compiler
ii intel-oneapi-compiler-dpcpp-cpp-common-2024.0 2024.0.2-49895 all Intel® oneAPI DPC++/C++ Compiler 2024.0.2 for Linux*
ii intel-oneapi-compiler-dpcpp-cpp-runtime-2024.0 2024.0.2-49895 amd64 Intel® oneAPI DPC++/C++ Compiler 2024.0.2 for Linux* runtime package for Intel(R) 64
ii intel-oneapi-compiler-dpcpp-eclipse-cfg-2024.0 2024.0.2-49895 all Intel® oneAPI DPC++/C++ Compiler 2024.0.2 for Linux* eclipse integration configuration file (DPC++)
ii intel-oneapi-compiler-shared-2024.0 2024.0.2-49895 amd64 Intel(R) Compiler Shared Files
ii intel-oneapi-compiler-shared-common-2024.0 2024.0.2-49895 all Intel(R) Compiler Shared Files
ii intel-oneapi-compiler-shared-runtime-2024.0 2024.0.2-49895 amd64 Intel(R) Compiler Shared Files runtime contents
ii intel-oneapi-dev-utilities-2024.0 2024.0.0-49320 amd64 Dev Utilities
ii intel-oneapi-dev-utilities-eclipse-cfg-2024.0 2024.0.0-49320 all intel-oneapi-dev-utilities-eclipse-cfg
ii intel-oneapi-dpcpp-cpp-2024.0 2024.0.2-49895 amd64 Intel® oneAPI DPC++/C++ Compiler 2024.0.2 for Linux* for Intel(R) 64
ii intel-oneapi-dpcpp-ct-2024.0 2024.0.0-49381 amd64 Intel® DPC++ Compatibility Tool
ii intel-oneapi-dpcpp-ct-eclipse-cfg-2024.0 2024.0.0-49381 all Intel® DPC++ Compatibility Tool 2024.0.0 for Linux* eclipse integration configuration file
ii intel-oneapi-dpcpp-debugger-2024.0 2024.0.0-49332 amd64 Intel® Distribution for GDB*
ii intel-oneapi-icc-eclipse-plugin-cpp-2024.0 2024.0.2-49895 all Standards driven high performance cross architecture DPC++/C++ compiler
ii intel-oneapi-libdpstd-devel-2022.3 2022.3.0-49369 amd64 Intel® oneAPI DPC++ Library 2022.3.0 for Linux*
ii intel-oneapi-openmp-2024.0 2024.0.2-49895 amd64 Intel® OpenMP* Runtime Library 2024.0.2 for Linux* for Intel(R) 64
ii intel-oneapi-openmp-common-2024.0 2024.0.2-49895 all Intel® OpenMP* Runtime Library 2024.0.2 for Linux*
ii intel-oneapi-runtime-compilers-2024 2024.0.2-49895 amd64 Intel® oneAPI DPC++/C++ Compiler runtime common files
ii intel-oneapi-runtime-compilers-common-2024 2024.0.2-49895 all Intel® oneAPI DPC++/C++ Compiler runtime common files
ii intel-oneapi-runtime-dpcpp-cpp-2024 2024.0.2-49895 amd64 Intel® oneAPI DPC++/C++ Compiler runtime
ii intel-oneapi-runtime-dpcpp-cpp-common-2024 2024.0.2-49895 all Intel® oneAPI DPC++/C++ Compiler runtime
ii intel-oneapi-runtime-dpcpp-sycl-core-2024 2024.0.2-49895 all Intel® oneAPI DPC++/C++ Compiler SYCL* Runtime Core
ii intel-oneapi-runtime-dpcpp-sycl-cpu-rt-2024 2024.0.2-49895 all Intel® oneAPI DPC++/C++ Compiler SYCL* CPU
ii intel-oneapi-runtime-dpcpp-sycl-fpga-emul-2024 2024.0.2-49895 all Intel® oneAPI DPC++/C++ Compiler SYCL* FPGA Emulator Runtime
ii intel-oneapi-runtime-dpcpp-sycl-opencl-cpu-2024 2024.0.2-49895 amd64 Intel® CPU Runtime for OpenCL(TM) Applications runtime
ii intel-oneapi-runtime-dpcpp-sycl-rt-2024 2024.0.2-49895 all Intel® oneAPI DPC++/C++ Compiler SYCL* Runtime
ii intel-oneapi-runtime-opencl-2024 2024.0.2-49895 amd64 Intel® CPU Runtime for OpenCL(TM) Applications runtime
ii intel-oneapi-runtime-openmp-2024 2024.0.2-49895 amd64 Intel® OpenMP* Runtime Library runtime
ii intel-oneapi-runtime-openmp-opencl-shared-2024 2024.0.2-49895 amd64 Intel(R) OpenMP and OpenCL shared files for runtime package
ii intel-oneapi-runtime-tbb 2021.11.0-49513 amd64 Intel® oneAPI Threading Building Blocks runtime
ii intel-oneapi-runtime-tbb-2021 2021.11.0-49513 amd64 Intel® oneAPI Threading Building Blocks runtime
ii intel-oneapi-runtime-tbb-common-2021 2021.11.0-49513 all Intel® oneAPI Threading Building Blocks runtime common
ii intel-oneapi-runtime-tcm-1 1.0.0-435 amd64 Thread Composability Manager
ii intel-oneapi-tbb-2021.11 2021.11.0-49513 amd64 Intel® oneAPI Threading Building Blocks
ii intel-oneapi-tbb-common-2021.11 2021.11.0-49513 all Intel® oneAPI Threading Building Blocks common
ii intel-oneapi-tbb-common-devel-2021.11 2021.11.0-49513 all Intel® oneAPI Threading Building Blocks common
ii intel-oneapi-tbb-devel-2021.11 2021.11.0-49513 amd64 Intel® oneAPI Threading Building Blocks Development Package
ii intel-oneapi-tcm-1.0 1.0.0-435 amd64 Thread Composability Manager
ii libflann-dev:amd64 1.19.1+dfsg-11eci4-oneapi2024.0.2 amd64 Fast Library for Approximate Nearest Neighbors - development
ii libflann-dpcpp-dev:amd64 1.19.1+dfsg-11eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Fast Approximate Nearest Neighbors searching - runtime
ii libflann1.9:amd64 1.19.1+dfsg-11eci4-oneapi2024.0.2 amd64 Fast Library for Approximate Nearest Neighbors - runtime
ii libflann1.9-dpcpp:amd64 1.19.1+dfsg-11eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Fast Approximate Nearest Neighbors searching - runtime
ii libpcl-apps1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - apps library
ii libpcl-common1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - common library
ii libpcl-dev 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - development files
ii libpcl-features1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - features library
ii libpcl-filters1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - filters library
ii libpcl-io1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - I/O library
ii libpcl-kdtree1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - kdtree library
ii libpcl-keypoints1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - keypoints library
ii libpcl-ml1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - ml library
ii libpcl-octree1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - octree library
ii libpcl-oneapi-common1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Point Cloud Library - common library
ii libpcl-oneapi-features1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - features library
ii libpcl-oneapi-filters1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Point Cloud Library - filters library
ii libpcl-oneapi-kdtree1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Point Cloud Library - kdtree library
ii libpcl-oneapi-octree1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Point Cloud Library - octree library
ii libpcl-oneapi-registration1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Point Cloud Library - registration library
ii libpcl-oneapi-sample-consensus1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Point Cloud Library - sample consensus library
ii libpcl-oneapi-search1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Point Cloud Library - search library
ii libpcl-oneapi-segmentation1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Point Cloud Library - segmentation library
ii libpcl-oneapi-surface1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Data Parallel C++ enabled Point Cloud Library - surface library
ii libpcl-outofcore1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - outofcore library
ii libpcl-people1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - people library
ii libpcl-recognition1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - recognition library
ii libpcl-registration1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - registration library
ii libpcl-sample-consensus1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - sample consensus library
ii libpcl-search1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - search library
ii libpcl-segmentation1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - segmentation library
ii libpcl-stereo1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - stereo library
ii libpcl-surface1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - surface library
ii libpcl-tracking1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - tracking library
ii libpcl-visualization1.12:amd64 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - visualization library
ii pcl-oneapi-tutorials 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - Intel(R) oneapi point cloud processing tutorials
ii pcl-tools 1.12.1+dfsg-6eci4-oneapi2024.0.2 amd64 Point Cloud Library - point cloud processing tools
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How to get the message below, from VTune or Advisor?
"warning: <unknown>:0:0: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering"?
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Maybe is similar with this page from Intel:
https://www.intel.com/content/www/us/en/support/programmable/articles/000086434.html
(warning: xx.cl:x:x: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering)
I not use directly Vtune or Advisor, i use directly OneAPI runtime with FLANN/PointCloudLibrary.
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