Select a Cache Partitioning Preset
- Establish isolated cache regions dedicated to real-time applications, also known asworkloads
- Restrict the GPU from accessing the entire L3 cache, and avoid overlap with cache partitions dedicated to real-time workloads
- Dedicate a small portion of the cache for low-latency I/O operations
- Configure L2 and L3 software SRAM buffers
- Confirm system settings based on the preset that you will choose:
- At tool launch, selectP:Would you like to add (A) or delete (D) a cache allocation? Or would you like to change the way the configuration is partitioned? (P) P
- The selected preset will overwrite the current configuration. All changes before this will be overwritten. After selecting a preset, enterYto apply the configuration and go to the reboot screen. You can check the resulting configuration. If it suits you, enterY. You can continue configuration editing by enteringC. To cancel applying the preset, enterU.
- Presets include dedicated cache for real-time workloads. After applying the new partitioning scheme and rebooting into it, you will need to take additional steps outside the cache configurator to allow your real-time application to use the dedicated cache. For details, see Assign Classes of Service to Cores.
- After use, enable RTCM to allow the cache allocation library to work properly. You can enable RTCM with the following commands:For systems running the PR1 release of the Yocto Project*-based BSP for Intel Atom® x6000E Series processors, run:/usr/share/tcc_tools/scripts/setup_ssram_v1/control_rtcm.sh enable rebootFor other systems, run:/usr/share/tcc_tools/scripts/setup_ssram/control_rtcm.sh enable reboot
- If the preset has dedicated cache for I/O operations, confirm thatWRC Featureis enabled in BIOS.Intel® TCC Modeenables the setting by default. If the setting is disabled, you may see reduced performance.