1. Structure

...

2. Resource

To support the use of dual NPUs, it is necessary to prepare the system environment and runtime environment of the C3V-W Dual EVB. Currently, two parts of the compressed packages are available:

• system environment：

  View file
  name master_dual_npu_support.tar.gz

• SDK libraries：

  View file
  name galcore_sdk0.tar.gz

  and

  View file
  name galcore_sdk1.tar.gz

2.1. System Environment

The system environment provides compressed packages：master_dual_npu_support.tar.gz. Which is contains two patch files. This patch is based on the following version:

...

• master_dual_npu_linux.patch: The Linux patch file. The path is as follows: "Q654\linux\kernel".

• master_dual_npu_xboot.patch: the xboot folder patch file. The path is as follows: "Q654\boot\xboot".

2.2. SDK Libraries

The SDK Libraries have been included in the compressed files:

...

When running the app, it is necessary to specify the link library path: LD_LIBRARY_PATH

3. Environment Preparation

3.1 System

Please patch file modifications into the Xboot and Linux codes, and Compile the working environments for the master and slave separately. Reburn master and slave ISP_SD_BOOOT.img to micro SD card.

...

---- CPIO-R slave mode Begin ----

VCO: 4.0G, PLL: 1.0G
PHY status change: 0x08000001
PHY status check Passed
CPIO Initial Finished
PHY Mode: 0x0000008D
Timer start: 0x00000000
Timer End: 0x00000009
gic init ...

3.2 NPU Modules Compile

NPU Version choice v6.4.15.9. Compile master/slave modules

...

galcore1.ko：slave NPU module；

3.3 Insmod Modules

Install the model using the following parameters:

...

crw-rw-rw- 1 root root 199, 0 Nov 21 21:11 /dev/galcore
crw-rw-rw- 1 root root 200, 0 Nov 21 21:11 /dev/galcore1

3.4. Run Process

Executing the required processes in the script is recommended. Different SDK paths can be specified in the script file.

...