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Merge remote-tracking branch 'origin/ldpc_enc_avx512' into integration_2025_w20 (3168)

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Improvements for LDPC encoding

AVX512 modifications for LDPC encoding: interleaving, ZC384 BG1, output
formatting for encoder, segmentation (memcpy instead of loop). some
improvement in TX for aarch64 in same places where AVX512 support was
added. Also, rate matching and interleaving are done on bytes containing
8 segments and reformatting of the output is done at the end of segment
processing instead of after ldpc encoding.

This improves the overall performance of the NR DL transmitter in gNB

See the merge request description for numbers.
This commit is contained in:
Robert Schmidt
2025-05-15 19:15:27 +02:00
parent c7deef8203 b1e0bfdda6
commit 7298f41e5d
31 changed files with 1298 additions and 902 deletions
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openair1/SIMULATION/NR_PHY/dlschsim.c
+4 -4
View File
@@ -512,8 +512,8 @@ int main(int argc, char **argv)
//printf("crc32: [0]->0x%08x\n",crc24c(test_input, 32));
// generate signal
unsigned char output[rel15->rbSize * NR_SYMBOLS_PER_SLOT * NR_NB_SC_PER_RB * 8 * NR_MAX_NB_LAYERS] __attribute__((aligned(32)));
bzero(output,rel15->rbSize * NR_SYMBOLS_PER_SLOT * NR_NB_SC_PER_RB * 8 * NR_MAX_NB_LAYERS);
unsigned char output[rel15->rbSize * NR_SYMBOLS_PER_SLOT * NR_NB_SC_PER_RB * NR_MAX_NB_LAYERS] __attribute__((aligned(64)));
bzero(output, sizeof(output));
if (input_fd == NULL) {
msgDataTx.num_pdsch_slot = 1;
nr_dlsch_encoding(gNB, &msgDataTx, frame, slot, frame_parms, output, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
@@ -533,12 +533,12 @@ int main(int argc, char **argv)
//if (i<16)
// printf("encoder output f[%d] = %d\n",i,dlsch->harq_processes[0]->f[i]);
if (output[i] == 0)
if ((output[i >> 3] & (1 << (i & 7))) == 0)
modulated_input[i] = 1.0; ///sqrt(2); //QPSK
else
modulated_input[i] = -1.0; ///sqrt(2);
//if (i<16) printf("modulated_input[%d] = %d\n",i,modulated_input[i]);
//if (i<16) printf("modulated_input[%d] = %f (%d)\n",i,modulated_input[i],output[i]);
//SNR =10;
SNR_lin = pow(10, SNR / 10.0);
sigma = 1.0 / sqrt(2 * SNR_lin);
openair1/SIMULATION/NR_PHY/ulschsim.c
+1 -1
View File
@@ -542,7 +542,7 @@ int main(int argc, char **argv)
}
*/
if (harq_process_ul_ue->f[i] == 0)
if ((harq_process_ul_ue->f[i >> 3] & (1 << (i & 7))) == 0)
modulated_input[i] = 1.0; ///sqrt(2); //QPSK
else
modulated_input[i] = -1.0; ///sqrt(2);
openair1/SIMULATION/NR_PHY/ulsim.c
+15 -2
View File
@@ -248,7 +248,9 @@ int main(int argc, char *argv[])
InitSinLUT();
int c;
while ((c = getopt(argc, argv, "--:O:a:b:c:d:ef:g:h:i:jk:m:n:p:q:r:s:t:u:v:w:y:z:A:C:F:G:H:I:M:N:PR:S:T:U:L:ZW:E:X:")) != -1) {
bool setAffinity=false;
char gNBthreads[128]="n";
while ((c = getopt(argc, argv, "--:O:a:b:c:d:ef:g:h:i:jk:m:n:p:q:r:s:t:u:v:w:y:z:A:C:F:G:H:I:M:N:PR:S:T:U:L:ZW:E:X:Y:")) != -1) {
/* ignore long options starting with '--', option '-O' and their arguments that are handled by configmodule */
/* with this opstring getopt returns 1 for non-option arguments, refer to 'man 3 getopt' */
if (c == 1 || c == '-' || c == 'O')
@@ -493,6 +495,13 @@ int main(int argc, char *argv[])
AssertFatal(filename_csv != NULL, "strdup() error: errno %d\n", errno);
break;
case 'Y':
threadCnt = sizeof(gNBthreads)-1;
strncpy(gNBthreads, optarg, threadCnt);
gNBthreads[threadCnt]=0;
setAffinity=true;
break;
case 'Z':
transform_precoding = transformPrecoder_enabled;
num_dmrs_cdm_grps_no_data = 2;
@@ -591,7 +600,11 @@ int main(int argc, char *argv[])
gNB->RU_list[0] = calloc(1, sizeof(**gNB->RU_list));
gNB->RU_list[0]->rfdevice.openair0_cfg = openair0_cfg;
initFloatingCoresTpool(threadCnt, &gNB->threadPool, false, "gNB-tpool");
if (setAffinity == false)
initFloatingCoresTpool(threadCnt, &gNB->threadPool, false, "gNB-tpool");
else
initNamedTpool(gNBthreads, &gNB->threadPool, true, "gNB-tpool");
initNotifiedFIFO(&gNB->respDecode);
initNotifiedFIFO(&gNB->respPuschSymb);