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0_event_status

【免费下载链接】runtime本项目提供CANN运行时组件和维测功能组件。项目地址: https://gitcode.com/cann/runtime

Description

This sample demonstrates Event status query flow after creation, after recording, and after synchronization.

Product Support

This sample supports the following products:

Compile and Run

1. Download the sample code to the environment where CANN software is installed. Switch to the sample directory.

cd ${git_clone_path}/example/1_basic_features/event/0_event_status

2. Set environment variables.

# Replace ${install_root} with the CANN installation root directory. The default installation is in the `/usr/local/Ascend` directory. source ${install_root}/cann/set_env.sh export ASCEND_INSTALL_PATH=${install_root}/cann # Set SOC_VERSION and ASCENDC_CMAKE_DIR # -SOC_VERSION: Ascend AI processor model, such as Ascend910_9362, Ascend910B2, and so on # -ASCENDC_CMAKE_DIR: The sample involves calling AscendC operators. Configure the AscendC compiler ascendc.cmake path, such as /usr/local/Ascend/cann/x86_64-linux/tikcpp/ascendc_kernel_cmake source ${git_clone_path}/example/set_sample_env.sh

3. Run the following command to execute the sample.

bash run.sh

CANN RUNTIME API

The key functionality points and their key interfaces involved in this sample are as follows:

• Initialization
  • CallaclInitinterface for initialization configuration.
  • CallaclFinalizeinterface for deinitialization.
• Device Management
  • CallaclrtSetDeviceinterface to specify the Device for computation.
  • CallaclrtResetDeviceForceinterface to forcefully reset the current computation Device and reclaim Device resources.
• Context Management
  • CallaclrtCreateContextinterface to create Context.
  • CallaclrtDestroyContextinterface to destroy Context.
• Stream Management
  • CallaclrtCreateStreaminterface to create Stream.
  • CallaclrtSetStreamFailureModeinterface to set the operation when Stream execution encounters errors. Default is continue on error, can be set to stop on error.
  • CallaclrtDestroyStreamForceinterface to forcefully destroy Stream.
• Event Management
  • CallaclrtCreateEventinterface to create Event.
  • CallaclrtRecordEventinterface to record Event.
  • CallaclrtSynchronizeEventinterface to block and wait for Event to complete.
  • CallaclrtQueryEventStatusinterface to query Event status.
  • CallaclrtDestroyEventinterface to destroy Event.
• Memory Management
  • CallaclrtMallocinterface to allocate memory on Device.
  • CallaclrtFreeinterface to release memory on Device.
• Data Transfer
  • CallaclrtMemcpyinterface to implement data transfer through memory copy.

Sample Output

[INFO] After create event, current event status is 0. [INFO] Applied resource successfully, beging assigning task. [INFO] Begin a long task. [INFO] 0 is incompleted, 1 is completed. [INFO] After record but before synchronize, current event status is 0. [INFO] After synchronize, current event status is 1. [INFO] The answer is 1. [INFO] Resource cleanup completed.

【免费下载链接】runtime本项目提供CANN运行时组件和维测功能组件。项目地址: https://gitcode.com/cann/runtime