en Copyright 2015 Java http://172.16.0.5:8080/history/llvm-project-15.0.7/openmp/libomptarget/tools/deviceinfo/llvm-omp-device-info.cpp#313c5239 [OpenMP][Tool] Introducing the `llvm-omp-device-info` toolThis patch introduces the `llvm-omp-device-info` tool, which uses theomptarget library and interface to query the device info from all theavailable devices as seen by OpenMP. This is inspired by PGI's `pgaccelinfo`Since omptarget usually requires a description structure with executablekernels, I split the initialization of the RTLs and Devices to be able toinitialize all possible devices and query each of them.This revision relies on the patch that introduces the print device info.A limitation is that the order in which the devices are initialized, and thecorresponding device ID is not necesarily the one seen by OpenMP.The changes are as follows:1. Separate the RTL initialization that was performed in `RegisterLib` to its own `initRTLonce` function2. Create an `initAllRTLs` method that initializes all available RTLs at runtime3. Created the `llvm-deviceinfo.cpp` tool that uses `omptarget` to query each device and prints its information.Example Output:```Device (0): print_device_info not implementedDevice (1): print_device_info not implementedDevice (2): print_device_info not implementedDevice (3): print_device_info not implementedDevice (4): CUDA Driver Version: 11000 CUDA Device Number: 0 Device Name: Quadro P1000 Global Memory Size: 4236312576 bytes Number of Multiprocessors: 5 Concurrent Copy and Execution: Yes Total Constant Memory: 65536 bytes Max Shared Memory per Block: 49152 bytes Registers per Block: 65536 Warp Size: 32 Threads Maximum Threads per Block: 1024 Maximum Block Dimensions: 1024, 1024, 64 Maximum Grid Dimensions: 2147483647 x 65535 x 65535 Maximum Memory Pitch: 2147483647 bytes Texture Alignment: 512 bytes Clock Rate: 1480500 kHz Execution Timeout: Yes Integrated Device: No Can Map Host Memory: Yes Compute Mode: DEFAULT Concurrent Kernels: Yes ECC Enabled: No Memory Clock Rate: 2505000 kHz Memory Bus Width: 128 bits L2 Cache Size: 1048576 bytes Max Threads Per SMP: 2048 Async Engines: Yes (2) Unified Addressing: Yes Managed Memory: Yes Concurrent Managed Memory: Yes Preemption Supported: Yes Cooperative Launch: Yes Multi-Device Boars: No Compute Capabilities: 61```Reviewed By: tianshilei1992Differential Revision: https://reviews.llvm.org/D106752 List of files: /llvm-project-15.0.7/openmp/libomptarget/tools/deviceinfo/llvm-omp-device-info.cpp Wed, 28 Jul 2021 02:38:27 +0000 Jose M Monsalve Diaz <jmonsalvediaz@anl.gov>