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You can use the caching function to ensure that this operation is performed only once. Caching saves the optimization results on the hard drive and uses it them for the subsequent analytics runs. 

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1. Stop the server (see Starting and stopping the Axxon One Server in Linux OS).
   

   Note
   title Attention!
   If the system has the software running on GPU, it is necessary to you must stop its operation.

2. Login as ngp superuser:

   1. In the command prompt, run the command:

      Code Block
      language bash
      sudo su ngp

   2. Enter the password for the root superuser.

3. Create a folder with a custom name to store the cache. For example:
   

   Code Block
   language bash
   mkdir /opt/AxxonSoft/AxxonOne/gpucache

4. Change folder permissions:
   

   Code Block
   language bash
   chmod -R 777 /opt/AxxonSoft/AxxonOne/gpucache

5. Go to the /opt/AxxonSoft/AxxonOne/ folder folder:
   

   Code Block
   language bash
   cd /opt/AxxonSoft/AxxonOne/

6. Open the server configuration file for editing:
   

   Code Block
   language bash
   sudo nano instance.conf

   Note
   title Attention!
   When using you use the server in failover mode, you should: Open the /etc/AxxonSoft/ folder folder: Code Block language bash cd /etc/AxxonSoft/ Open the server configuration file for editing: Code Block language bash sudo nano axxon-one.conf Info Before making title Attention! Before you make changes to the axxon-one.conf file, it is recommended to read we recommend reading the instructions on the page Creating system variables for the Axxon One server in the failover mode in Linux OS. Add the GPU_CACHE_DIR system variable in the configuration file, wherethevaluewillspecify the pathto the cachelocationfolder: Code Block language bash export GPU_CACHE_DIR="/opt/AxxonSoft/AxxonOne/gpucache" Save the changes in the server configuration file. Add the GPU_CACHE_DIR system variable in the /etc/profile file: Code Block language bash export GPU_CACHE_DIR="/opt/AxxonSoft/AxxonOne/gpucache" Run the command: Code Block language bash source /etc/profile

7. Add the GPU_CACHE_DIR system variable,wherethevaluewillspecify the pathto the cachelocationfolder. For example:

   Code Block
   language bash
   export GPU_CACHE_DIR="/opt/AxxonSoft/AxxonOne/gpucache"

8. Save the server configuration file using the Ctrl+O keyboard shortcut.

9. Exit file editing mode using the Ctrl+X keyboard shortcut.
   

   Note
   title Attention!
   When you change the server configuration (see Changing the configuration of the Axxon One Server in Linux OS) or update to the new Axxon One version, the system variables previously added to the instance.conf configuration file will be deleted (see Creating system variables for the Axxon One server in Linux OS).

10. In the command prompt, run the command that was usedtoadd the systemvariablewiththepathto the cache location folder. For example:
    

    Code Block
    language bash
    export GPU_CACHE_DIR="/opt/AxxonSoft/AxxonOne/gpucache"

11. Go to the /opt/AxxonSoft/DetectorPack/ folder:

    Code Block
    language bash
    cd /opt/AxxonSoft/DetectorPack

12. Run the following command:

    Code Block
    language bash
    ./NeuroPackGpuCacheGenerator

    Note
    title Attention!
    If more than one Nvidia GPU is available, you will be able to select one. To do this, specify a number from 0 to 3, which corresponds to the required device in the list.

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• GeneralNMHuman_v1.0GPU_onnx.ann—person;
• smokeScanned_v1_onnx.ann (or bestSmoke_v1.ann starting with Detector Pack 3.14)—smoke detection;
• fireScanned_v1_onnx.ann (or bestFire_v1.ann starting with Detector Pack 3.14)—fire detection;
• reid_15_0_256__osnetfpn_segmentation_noise_20_common_29_onnx.ann—search for the similar in the Neural tracker (see Similitude search).
  

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