aclrtMemAttr

typedef enum aclrtMemAttr {
    ACL_DDR_MEM,             // Huge page memory + normal page memory
    ACL_HBM_MEM,             // Huge page memory + normal page memory
    ACL_DDR_MEM_HUGE,        // Huge page memory
    ACL_DDR_MEM_NORMAL,      // Normal page memory
    ACL_HBM_MEM_HUGE,        // Huge page memory. The memory allocation granularity is 2 MB. If the allocated memory is not a multiple of 2 MB, it is rounded up to the nearest multiple of 2 MB.
    ACL_HBM_MEM_NORMAL,      // Normal page memory
    ACL_DDR_MEM_P2P_HUGE,    // Huge page memory for inter-device data copy
    ACL_DDR_MEM_P2P_NORMAL,  // Normal page memory for inter-device data copy
    ACL_HBM_MEM_P2P_HUGE,    // Huge page memory for inter-device data copy. The memory allocation granularity is 2 MB. If the allocated memory is not a multiple of 2 MB, it is rounded up to the nearest multiple of 2 MB.
    ACL_HBM_MEM_P2P_NORMAL,  // Normal page memory for inter-device data copy
    ACL_HBM_MEM_HUGE1G,      // Huge page memory. The memory allocation granularity is 1 GB. If the allocated memory is not a multiple of 1 GB, it is rounded up to the nearest multiple of 1 GB.
    ACL_HBM_MEM_P2P_HUGE1G   // Huge page memory for inter-device data copy. The memory allocation granularity is 1 GB. If the allocated memory is not a multiple of 1 GB, it is rounded up to the nearest multiple of 1 GB.

    /* The preceding options are compatible with earlier versions. You need to select memory attribute options that match the hardware memory (DDR or HBM). */
    /* The following options are automatically adapted by the API based on the underlying hardware memory (DDR or HBM). You do not need to distinguish hardware details. Such options are recommended. */

    ACL_MEM_NORMAL,          // Normal page memory
    ACL_MEM_HUGE,            // Huge page memory. The memory allocation granularity is 2 MB. If the allocated memory is not a multiple of 2 MB, it is rounded up to the nearest multiple of 2 MB.
    ACL_MEM_HUGE1G,          // Huge page memory. The memory allocation granularity is 1 GB. If the allocated memory is not a multiple of 1 GB, it is rounded up to the nearest multiple of 1 GB.
    ACL_MEM_P2P_NORMAL,      // Normal page memory for inter-device data copy
    ACL_MEM_P2P_HUGE,        // Huge page memory for inter-device data copy. The memory allocation granularity is 2 MB. If the allocated memory is not a multiple of 2 MB, it is rounded up to the nearest multiple of 2 MB.
    ACL_MEM_P2P_HUGE1G,      // Huge page memory for inter-device data copy. The memory allocation granularity is 1 GB. If the allocated memory is not a multiple of 1 GB, it is rounded up to the nearest multiple of 1 GB.
} aclrtMemAttr;