Assertion failed - Worker index exceeds number of crypto workers

[nicolasbertaud]

when my gnb start it says

`--== srsRAN gNB (commit 11c9bba) ==--

Lower PHY in executor sequential baseband mode.
Available radio types: zmq.
Cell pci=1, bw=20 MHz, 1T1R, dl_arfcn=437000 (n65), dl_freq=2185 MHz, dl_ssb_arfcn=436850, ul_freq=1995 MHz

N2: Connection to AMF on 192.168.50.26:38412 completed
==== gNB started ===
Type to view help
Remote control server listening on 127.0.0.1:55555
/home/nicolas/srsRAN_Project/lib/pdcp/pdcp_entity_rx.cpp:537: srsran::security::security_result srsran::pdcp_entity_rx::apply_deciphering_and_integrity_check(srsran::byte_buffer, uint32_t):
Assertion failed - Worker index exceeds number of crypto workers. worker_idx=2 max_nof_crypto_workers=2
Aborted`

i don't see max_nof_crypto_workers=2 in configuration file
can you help how to solve this

[robertfalkenberg]

I think this can happen when the number of workers is larger than the number of CPU cores available to the application.

See cpu_architecture_info.h

  /// Get the number of CPUs available to the application.
  size_t get_host_nof_available_cpus() const { return cpu_desc.nof_available_cpus; }

Have you modified the config of the following section?

expert_execution:
  threads:
    main_pool:
      nof_threads: <value>

If not, then the number is automatically determined via following formula in worker_manager.cpp:

/// Makes an estimation of the needed number of threads for the application.
static unsigned get_default_nof_workers(const worker_manager_config& worker_cfg)
{
...
 unsigned nof_workers = 0;
 if (worker_cfg.nof_main_pool_threads.has_value()) {
   nof_workers = worker_cfg.nof_main_pool_threads.value();
 } else {
   // Estimation of minimum number of workers needed for the application using the formula:
   // nof_workers = nof_cells * (nof_dl_antennas + nof_ul_antennas + 1) + 2
   if (worker_cfg.du_low_cfg.has_value()) {
     for (unsigned i = 0, e = worker_cfg.du_low_cfg->cell_nof_dl_antennas.size(); i != e; ++i) {
       nof_workers += worker_cfg.du_low_cfg->cell_nof_dl_antennas[i] + worker_cfg.du_low_cfg->cell_nof_ul_antennas[i];
     }
   }
   if (worker_cfg.du_hi_cfg.has_value()) {
     nof_workers += worker_cfg.du_hi_cfg->nof_cells * 1;
   }
   nof_workers += 2;
 }

 // The number of workers of the pool needs to be at least 1.
 const unsigned min_pool_workers = 1;
 return std::max(std::min(nof_workers, avail_cpus - spare_cpus), min_pool_workers);

How many CPU cores are available (a) to the application and (b) to the whole system?

Related issue with older version of the code:
#339 (reply in thread)