aws / aws-ofi-nccl - Conditional Complexity

Intro

Conditional complexity (also called cyclomatic complexity) is a term used to measure the complexity of software. The term refers to the number of possible paths through a program function. A higher value ofter means higher maintenance and testing costs (infosecinstitute.com).
Conditional complexity is calculated by counting all conditions in the program that can affect the execution path (e.g. if statement, loops, switches, and/or operators, try and catch blocks...).
Conditional complexity is measured at the unit level (methods, functions...).
Units are classified in four categories based on the measured McCabe index: 1-5 (simple units), 6-10 (medium complex units), 11-25 (complex units), 26+ (very complex units).

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Conditional Complexity Overall

There are 444 units with 11,959 lines of code in units (70.6% of code).

0 very complex units (0 lines of code)
8 complex units (1,021 lines of code)
41 medium complex units (3,033 lines of code)
66 simple units (3,016 lines of code)
329 very simple units (4,889 lines of code)

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

3D view of all units

Conditional Complexity per Extension

51+

26-50

11-25

6-10

1-5

Conditional Complexity per Logical Component

primary logical decomposition

51+

26-50

11-25

6-10

1-5

Most Complex Units

Top 50 most complex units

Unit	# lines	McCabe index	# params
static inline int rdma_req_handle_cq_entry() in src/nccl_ofi_rdma.cpp	106	43	3
int nccl_net_ofi_create_plugin() in src/nccl_ofi_net.cpp	155	36	1
static int send() in src/nccl_ofi_rdma.cpp	140	30	6
int nccl_net_ofi_rdma_init() in src/nccl_ofi_rdma.cpp	155	30	3
int nccl_net_ofi_info_properties() in src/nccl_ofi_net.cpp	119	29	5
int platform_init() in src/platform-aws.cpp	102	28	1
int platform_config_endpoint() in src/platform-aws.cpp	101	27	2
static int recv() in src/nccl_ofi_rdma.cpp	143	27	7
int nccl_ofi_ofiutils_init_connection() in src/nccl_ofi_ofiutils.cpp	116	24	5
static int sendrecv_listen_comm_accept() in src/nccl_ofi_sendrecv.cpp	114	23	2
static int process_pending_reqs() in src/nccl_ofi_rdma.cpp	51	23	1
void platform_sort_rails() in src/platform-aws.cpp	95	22	3
static int sendrecv_recv_comm_flush() in src/nccl_ofi_sendrecv.cpp	107	22	6
int nccl_net_ofi_sendrecv_init() in src/nccl_ofi_sendrecv.cpp	123	22	2
ncclResult_t model_get_coll_info_internal_v2() in src/tuner/nccl_ofi_model.cpp	53	21	9
static int accept() in src/nccl_ofi_rdma.cpp	122	21	2
static int connect() in src/nccl_ofi_rdma.cpp	111	21	3
static inline int handle_rx_buff_recv() in src/nccl_ofi_rdma.cpp	103	20	5
static int write_nccl_topo_rec() in src/nccl_ofi_topo.cpp	55	19	5
static int receive_progress() in src/nccl_ofi_rdma.cpp	45	19	2
ncclResult_t model_get_coll_info_internal_v3() in src/tuner/nccl_ofi_model.cpp	60	18	8
static int test() in src/nccl_ofi_rdma.cpp	61	18	3
static int sendrecv_endpoint_connect() in src/nccl_ofi_sendrecv.cpp	87	17	3
static ncclResult_t nccl_ofi_tuner_init() in src/tuner/nccl_ofi_tuner.cpp	76	16	4
static int flush() in src/nccl_ofi_rdma.cpp	79	15	6
int nccl_ofi_freelist_add() in src/nccl_ofi_freelist.cpp	95	15	2
static int sendrecv_mr_buffers_register() in src/nccl_ofi_sendrecv.cpp	85	14	7
static int get_pci_device_speed() in src/nccl_ofi_topo.cpp	97	14	4
int is_inside_region() in src/tuner/nccl_ofi_regions.cpp	46	14	2
static inline int create_send_comm() in src/nccl_ofi_rdma.cpp	116	14	3
ncclResult_t nccl_net_ofi_regMrDmaBuf_v6() in src/nccl_ofi_api.cpp	59	13	7
static inline int handle_ctrl_recv() in src/nccl_ofi_rdma.cpp	69	13	3
static int nccl_net_ofi_rdma_domain_create_endpoint() in src/nccl_ofi_rdma.cpp	83	13	2
ncclResult_t nccl_net_ofi_irecv_v9() in src/nccl_ofi_api.cpp	37	12	7
static inline int insert_send_ctrl_req() in src/nccl_ofi_rdma.cpp	81	12	9
static int nccl_net_ofi_rdma_endpoint_release() in src/nccl_ofi_rdma.cpp	44	12	3
static int sendrecv_comm_mr_base_reg() in src/nccl_ofi_sendrecv.cpp	59	11	4
static int sendrecv_recv_comm_recv() in src/nccl_ofi_sendrecv.cpp	72	11	7
static int sendrecv_send_comm_send() in src/nccl_ofi_sendrecv.cpp	80	11	6
static inline int sendrecv_send_comm_create() in src/nccl_ofi_sendrecv.cpp	88	11	3
static int get_info_for_node() in src/nccl_ofi_topo.cpp	36	11	3
static int count_nodes_with_accel_or_nic_in_subtree() in src/nccl_ofi_topo.cpp	32	11	3
static int set_user_data() in src/nccl_ofi_topo.cpp	51	11	2
static int create_groups_from_info_list() in src/nccl_ofi_topo.cpp	56	11	5
ncclResult_t region_get_coll_info_internal_v2() in src/tuner/nccl_ofi_regions.cpp	51	11	9
ncclResult_t region_get_coll_info_internal_v3() in src/tuner/nccl_ofi_regions.cpp	52	11	8
static inline int handle_eager_recv() in src/nccl_ofi_rdma.cpp	55	11	3
static int send_progress() in src/nccl_ofi_rdma.cpp	48	11	1
static inline int init_rx_buffers() in src/nccl_ofi_rdma.cpp	83	11	1
int nccl_net_ofi_endpoint_release() in src/nccl_ofi_net.cpp	31	10	3