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Merge remote-tracking branch 'origin/tx_symbol_processing' into integration_2026_w15 (!3489)

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Thread-pool support for TX symbol processing.

This MR adds thread-pool support for TX symbol processing. It allows modulation
/mapping/layer-precoding to run in parallel and offers a speedup of around 3
compared to single-thread execution. This is particularly important for large
bandwidths and 4 or more TX antenna ports where the precoding operation is quite
computationally-intensive.

Please see the description of !3489 for the performance comparison results and
the nr_dlsim timing measurements.
This commit is contained in:
Jaroslava Fiedlerova
2026-04-09 18:11:03 +02:00
parent 83ffa53ccc 03350ab21b
commit 8583689349
8 changed files with 300 additions and 137 deletions
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8
executables/nr-gnb.c
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@@ -208,8 +208,7 @@ static size_t dump_L1_meas_stats(PHY_VARS_gNB *gNB, RU_t *ru, char *output, size
output += print_meas_log(&gNB->dlsch_encoding_stats, "DLSCH encoding", NULL, NULL, output, end - output);
output += print_meas_log(&gNB->dlsch_scrambling_stats, "DLSCH scrambling", NULL, NULL, output, end-output);
output += print_meas_log(&gNB->dlsch_modulation_stats, "DLSCH modulation", NULL, NULL, output, end - output);
output += print_meas_log(&gNB->dlsch_resource_mapping_stats, "DLSCH resource mapping", NULL, NULL, output,end-output);
output += print_meas_log(&gNB->dlsch_precoding_stats, "DLSCH precoding", NULL, NULL, output,end-output);
output += print_meas_log(&gNB->dlsch_pdsch_generation_stats, "PDSCH generation", NULL, NULL, output, end - output);
output += print_meas_log(&gNB->phy_proc_rx, "L1 Rx processing", NULL, NULL, output, end - output);
output += print_meas_log(&gNB->ts_deinterleave, "UL segment deinterleaving", NULL, NULL, output, end - output);
output += print_meas_log(&gNB->ts_rate_unmatch, "UL segment rate recovery", NULL, NULL, output, end - output);
@@ -280,8 +279,7 @@ void *nrL1_stats_thread(void *param) {
reset_meas(&gNB->rx_pusch_stats);
reset_meas(&gNB->dlsch_scrambling_stats);
reset_meas(&gNB->dlsch_modulation_stats);
reset_meas(&gNB->dlsch_resource_mapping_stats);
reset_meas(&gNB->dlsch_precoding_stats);
reset_meas(&gNB->dlsch_pdsch_generation_stats);
while (!oai_exit) {
sleep(1);
if (ftruncate(fileno(fd), 0) != 0 || fseek(fd, 0, SEEK_SET) != 0) {
@@ -309,8 +307,6 @@ void init_gNB_Tpool(int inst)
PHY_VARS_gNB *gNB;
gNB = RC.gNB[inst];
gNB_L1_proc_t *proc = &gNB->proc;
// PUSCH symbols per thread need to be calculated by how many threads we have
gNB->num_pusch_symbols_per_thread = 1;
// ULSCH decoding threadpool
initTpool(get_softmodem_params()->threadPoolConfig, &gNB->threadPool, cpumeas(CPUMEAS_GETSTATE));