AscendIndexFlatConfig

inline AscendIndexFlatConfig(std::initializer_list<int> devices, int64_t resourceSize = FLAT_DEFAULT_MEM)

Constructor of AscendIndexFlatConfig, which is used to generate AscendIndexFlatConfig. The processor resources on the NPU and the resource pool size are configured based on the value configured in devices.

std::initializer_list<int> devices: processor resources on the NPU.

int64_t resourceSize: preset memory pool size on the device, in bytes. It is the memory space for storing intermediate results during computing to prevent performance fluctuation caused by dynamic memory allocation. The default parameter is FLAT_DEFAULT_MEM in the header file. This parameter is determined by the base library capacity and the number of search batches. If the base library has 10 million records or more and the number of the batches is greater than or equal to 16, set this parameter to 1024 MB.

N/A

N/A

• The devices must be a valid processor ID. A maximum of 64 processors are supported.
• The value of resourceSize cannot exceed 1024 MB (1024 x 1024 x 1024 bytes). When resourceSize is set to -1, the value of the configured processor resources on the NPU is 128 MB.