diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProcPc_gen_BG1_avx2.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProcPc_gen_BG1_avx2.c
index 61e9ae831f..edb0467d39 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProcPc_gen_BG1_avx2.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProcPc_gen_BG1_avx2.c
@@ -5,7 +5,7 @@
 #include "../../nrLDPC_types.h"
 
 
-void nrLDPC_bnProcPc_BG1_generator_AVX2(int R)
+void nrLDPC_bnProcPc_BG1_generator_AVX2(const char *dir, int R)
 {
   const char *ratestr[3]={"13","23","89"};
 
@@ -15,7 +15,7 @@ void nrLDPC_bnProcPc_BG1_generator_AVX2(int R)
  // system("mkdir -p ../ldpc_gen_files");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/bnProcPc/nrLDPC_bnProcPc_BG1_R%s_AVX2.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/bnProcPc/nrLDPC_bnProcPc_BG1_R%s_AVX2.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProcPc_gen_BG2_avx2.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProcPc_gen_BG2_avx2.c
index 6698b25614..15d544af0c 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProcPc_gen_BG2_avx2.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProcPc_gen_BG2_avx2.c
@@ -5,7 +5,7 @@
 #include "../../nrLDPC_types.h"
 
 
-void nrLDPC_bnProcPc_BG2_generator_AVX2(int R)
+void nrLDPC_bnProcPc_BG2_generator_AVX2(const char *dir, int R)
 {
   const char *ratestr[3]={"15","13","23"};
 
@@ -15,7 +15,7 @@ void nrLDPC_bnProcPc_BG2_generator_AVX2(int R)
  // system("mkdir -p ../ldpc_gen_files");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/bnProcPc/nrLDPC_bnProcPc_BG2_R%s_AVX2.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/bnProcPc/nrLDPC_bnProcPc_BG2_R%s_AVX2.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProc_gen_BG1_avx2.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProc_gen_BG1_avx2.c
index 726dce8361..816cdf37f5 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProc_gen_BG1_avx2.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProc_gen_BG1_avx2.c
@@ -6,7 +6,7 @@
 #include "../../nrLDPC_types.h"
 
 
-void nrLDPC_bnProc_BG1_generator_AVX2(int R)
+void nrLDPC_bnProc_BG1_generator_AVX2(const char *dir, int R)
 {
   const char *ratestr[3]={"13","23","89"};
 
@@ -16,7 +16,7 @@ void nrLDPC_bnProc_BG1_generator_AVX2(int R)
  // system("mkdir -p ../ldpc_gen_files");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/bnProc/nrLDPC_bnProc_BG1_R%s_AVX2.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/bnProc/nrLDPC_bnProc_BG1_R%s_AVX2.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProc_gen_BG2_avx2.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProc_gen_BG2_avx2.c
index 6f3a0fc046..433e6fdc62 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProc_gen_BG2_avx2.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/bnProc_gen_BG2_avx2.c
@@ -6,7 +6,7 @@
 
 
 
-void nrLDPC_bnProc_BG2_generator_AVX2(int R)
+void nrLDPC_bnProc_BG2_generator_AVX2(const char *dir, int R)
 {
   const char *ratestr[3]={"15","13","23"};
 
@@ -16,7 +16,7 @@ void nrLDPC_bnProc_BG2_generator_AVX2(int R)
  // system("mkdir -p ../ldpc_gen_files");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/bnProc/nrLDPC_bnProc_BG2_R%s_AVX2.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/bnProc/nrLDPC_bnProc_BG2_R%s_AVX2.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/main.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/main.c
index ece16331c8..6f4f8902a9 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/main.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc/main.c
@@ -2,24 +2,27 @@
 #include <stdio.h>
 #include <stdint.h>
 #define NB_R  3
-void nrLDPC_bnProc_BG1_generator_AVX2(int);
-void nrLDPC_bnProc_BG2_generator_AVX2(int);
-void nrLDPC_bnProcPc_BG1_generator_AVX2(int);
-void nrLDPC_bnProcPc_BG2_generator_AVX2(int);
+void nrLDPC_bnProc_BG1_generator_AVX2(const char*, int);
+void nrLDPC_bnProc_BG2_generator_AVX2(const char*, int);
+void nrLDPC_bnProcPc_BG1_generator_AVX2(const char*, int);
+void nrLDPC_bnProcPc_BG2_generator_AVX2(const char*, int);
 
-int main()
+int main(int argc, char *argv[])
 {
- int R[NB_R]={0,1,2};
-        for(int i=0; i<NB_R;i++){
+  if (argc != 2) {
+    fprintf(stderr, "usage: %s <output-dir>\n", argv[0]);
+    return 1;
+  }
+  const char *dir = argv[1];
 
-        nrLDPC_bnProc_BG1_generator_AVX2(R[i]);
-	nrLDPC_bnProc_BG2_generator_AVX2(R[i]);
-        
-	nrLDPC_bnProcPc_BG1_generator_AVX2(R[i]);
-        nrLDPC_bnProcPc_BG2_generator_AVX2(R[i]);
-
-	}
+  int R[NB_R]={0,1,2};
+  for(int i=0; i<NB_R;i++){
+    nrLDPC_bnProc_BG1_generator_AVX2(dir, R[i]);
+    nrLDPC_bnProc_BG2_generator_AVX2(dir, R[i]);
 
+    nrLDPC_bnProcPc_BG1_generator_AVX2(dir, R[i]);
+    nrLDPC_bnProcPc_BG2_generator_AVX2(dir, R[i]);
+  }
 
   return(0);
 }
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProcPc_gen_BG1_avx512.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProcPc_gen_BG1_avx512.c
index 6a205da584..1a5979490a 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProcPc_gen_BG1_avx512.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProcPc_gen_BG1_avx512.c
@@ -6,7 +6,7 @@
 #include "../../nrLDPC_types.h"
 
 
-void nrLDPC_bnProcPc_BG1_generator_AVX512(int R)
+void nrLDPC_bnProcPc_BG1_generator_AVX512(const char *dir, int R)
 {
   const char *ratestr[3]={"13","23","89"};
 
@@ -16,7 +16,7 @@ void nrLDPC_bnProcPc_BG1_generator_AVX512(int R)
 
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/bnProcPc_avx512/nrLDPC_bnProcPc_BG1_R%s_AVX512.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/bnProcPc_avx512/nrLDPC_bnProcPc_BG1_R%s_AVX512.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProcPc_gen_BG2_avx512.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProcPc_gen_BG2_avx512.c
index c23deeb513..87cdf58154 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProcPc_gen_BG2_avx512.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProcPc_gen_BG2_avx512.c
@@ -6,7 +6,7 @@
 #include "../../nrLDPC_types.h"
 
 
-void nrLDPC_bnProcPc_BG2_generator_AVX512(int R)
+void nrLDPC_bnProcPc_BG2_generator_AVX512(const char *dir, int R)
 {
   const char *ratestr[3]={"15","13","23"};
 
@@ -16,7 +16,7 @@ void nrLDPC_bnProcPc_BG2_generator_AVX512(int R)
  // system("mkdir -p ../ldpc_gen_files");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/bnProcPc_avx512/nrLDPC_bnProcPc_BG2_R%s_AVX512.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/bnProcPc_avx512/nrLDPC_bnProcPc_BG2_R%s_AVX512.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProc_gen_BG1_avx512.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProc_gen_BG1_avx512.c
index 7c61b08df2..3dc75cf51d 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProc_gen_BG1_avx512.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProc_gen_BG1_avx512.c
@@ -6,7 +6,7 @@
 #include "../../nrLDPC_types.h"
 
 
-void nrLDPC_bnProc_BG1_generator_AVX512(int R)
+void nrLDPC_bnProc_BG1_generator_AVX512(const char *dir, int R)
 {
   const char *ratestr[3]={"13","23","89"};
 
@@ -16,7 +16,7 @@ void nrLDPC_bnProc_BG1_generator_AVX512(int R)
  // system("mkdir -p ../ldpc_gen_files");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/bnProc_avx512/nrLDPC_bnProc_BG1_R%s_AVX512.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/bnProc_avx512/nrLDPC_bnProc_BG1_R%s_AVX512.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProc_gen_BG2_avx512.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProc_gen_BG2_avx512.c
index 5e59af420b..037d55867a 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProc_gen_BG2_avx512.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/bnProc_gen_BG2_avx512.c
@@ -6,7 +6,7 @@
 #include "../../nrLDPC_types.h"
 
 
-void nrLDPC_bnProc_BG2_generator_AVX512(int R)
+void nrLDPC_bnProc_BG2_generator_AVX512(const char *dir, int R)
 {
   const char *ratestr[3]={"15","13","23"};
 
@@ -16,7 +16,7 @@ void nrLDPC_bnProc_BG2_generator_AVX512(int R)
  // system("mkdir -p ../ldpc_gen_files");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/bnProc_avx512/nrLDPC_bnProc_BG2_R%s_AVX512.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/bnProc_avx512/nrLDPC_bnProc_BG2_R%s_AVX512.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/main.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/main.c
index 8a486d0653..267d8f2257 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/main.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_bnProc_avx512/main.c
@@ -3,24 +3,27 @@
 #include <stdint.h>
 #include <stdlib.h>
 #define NB_R  3
-void nrLDPC_bnProc_BG1_generator_AVX512(int);
-void nrLDPC_bnProc_BG2_generator_AVX512(int);
-void nrLDPC_bnProcPc_BG1_generator_AVX512(int);
-void nrLDPC_bnProcPc_BG2_generator_AVX512(int);
+void nrLDPC_bnProc_BG1_generator_AVX512(const char *, int);
+void nrLDPC_bnProc_BG2_generator_AVX512(const char *, int);
+void nrLDPC_bnProcPc_BG1_generator_AVX512(const char *, int);
+void nrLDPC_bnProcPc_BG2_generator_AVX512(const char *, int);
 
-int main()
+int main(int argc, char *argv[])
 {
- int R[NB_R]={0,1,2};
-        for(int i=0; i<NB_R;i++){
+  if (argc != 2) {
+    fprintf(stderr, "usage: %s <output-dir>\n", argv[0]);
+    return 1;
+  }
+  const char *dir = argv[1];
 
-        nrLDPC_bnProc_BG1_generator_AVX512(R[i]);
-	nrLDPC_bnProc_BG2_generator_AVX512(R[i]);
-        
-	nrLDPC_bnProcPc_BG1_generator_AVX512(R[i]);
-        nrLDPC_bnProcPc_BG2_generator_AVX512(R[i]);
-
-	}
+  int R[NB_R]={0,1,2};
+  for(int i=0; i<NB_R;i++){
+    nrLDPC_bnProc_BG1_generator_AVX512(dir, R[i]);
+    nrLDPC_bnProc_BG2_generator_AVX512(dir, R[i]);
 
+    nrLDPC_bnProcPc_BG1_generator_AVX512(dir, R[i]);
+    nrLDPC_bnProcPc_BG2_generator_AVX512(dir, R[i]);
+  }
 
   return(0);
 }
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/cnProc_gen_BG1_avx2.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/cnProc_gen_BG1_avx2.c
index b4106d1c3e..d8ba661ce5 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/cnProc_gen_BG1_avx2.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/cnProc_gen_BG1_avx2.c
@@ -3,7 +3,7 @@
 #include <stdint.h>
 #include "../../nrLDPCdecoder_defs.h"
 
-void nrLDPC_cnProc_BG1_generator_AVX2(int R)
+void nrLDPC_cnProc_BG1_generator_AVX2(const char* dir, int R)
 {
   const char *ratestr[3]={"13","23","89"};
 
@@ -13,7 +13,7 @@ void nrLDPC_cnProc_BG1_generator_AVX2(int R)
  // system("mkdir -p ../ldpc_gen_files");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/cnProc/nrLDPC_cnProc_BG1_R%s_AVX2.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/cnProc/nrLDPC_cnProc_BG1_R%s_AVX2.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/cnProc_gen_BG2_avx2.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/cnProc_gen_BG2_avx2.c
index 647d79aa27..86e286171c 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/cnProc_gen_BG2_avx2.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/cnProc_gen_BG2_avx2.c
@@ -6,7 +6,7 @@
 #include "../../nrLDPC_bnProc.h"
 
 
-void nrLDPC_cnProc_BG2_generator_AVX2(int R)
+void nrLDPC_cnProc_BG2_generator_AVX2(const char* dir, int R)
 {
   const char *ratestr[3]={"15","13","23"};
 
@@ -16,7 +16,7 @@ void nrLDPC_cnProc_BG2_generator_AVX2(int R)
 //  system("mkdir -p ldpc_gen_files/avx2");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/cnProc/nrLDPC_cnProc_BG2_R%s_AVX2.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/cnProc/nrLDPC_cnProc_BG2_R%s_AVX2.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/main.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/main.c
index 3086439a9e..7060b8df4f 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/main.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc/main.c
@@ -2,18 +2,21 @@
 #include <stdio.h>
 #include <stdint.h>
 #define NB_R  3
-void nrLDPC_cnProc_BG1_generator_AVX2(int);
-void nrLDPC_cnProc_BG2_generator_AVX2(int);
-int main()
+void nrLDPC_cnProc_BG1_generator_AVX2(const char*, int);
+void nrLDPC_cnProc_BG2_generator_AVX2(const char*, int);
+int main(int argc, char *argv[])
 {
- int R[NB_R]={0,1,2};
-        for(int i=0; i<NB_R;i++){
-
-        nrLDPC_cnProc_BG1_generator_AVX2(R[i]);
-	nrLDPC_cnProc_BG2_generator_AVX2(R[i]);
-
-	}
+  if (argc != 2) {
+    fprintf(stderr, "usage: %s <output-dir>\n", argv[0]);
+    return 1;
+  }
+  const char *dir = argv[1];
 
+  int R[NB_R]={0,1,2};
+  for(int i=0; i<NB_R;i++) {
+    nrLDPC_cnProc_BG1_generator_AVX2(dir, R[i]);
+    nrLDPC_cnProc_BG2_generator_AVX2(dir, R[i]);
+  }
 
   return(0);
 }
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/cnProc_gen_BG1_avx512.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/cnProc_gen_BG1_avx512.c
index 8d567768ed..b2e13d427f 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/cnProc_gen_BG1_avx512.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/cnProc_gen_BG1_avx512.c
@@ -3,7 +3,7 @@
 #include <stdlib.h>
 #include "../../nrLDPCdecoder_defs.h"
 
-void nrLDPC_cnProc_BG1_generator_AVX512(int R)
+void nrLDPC_cnProc_BG1_generator_AVX512(const char *dir, int R)
 {
   const char *ratestr[3]={"13","23","89"};
 
@@ -13,7 +13,7 @@ void nrLDPC_cnProc_BG1_generator_AVX512(int R)
  // system("mkdir -p ../ldpc_gen_files");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/cnProc_avx512/nrLDPC_cnProc_BG1_R%s_AVX512.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/cnProc_avx512/nrLDPC_cnProc_BG1_R%s_AVX512.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/cnProc_gen_BG2_avx512.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/cnProc_gen_BG2_avx512.c
index ee00cdbe35..e77a40af07 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/cnProc_gen_BG2_avx512.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/cnProc_gen_BG2_avx512.c
@@ -3,7 +3,7 @@
 #include <stdint.h>
 #include "../../nrLDPCdecoder_defs.h"
 
-void nrLDPC_cnProc_BG2_generator_AVX512(int R)
+void nrLDPC_cnProc_BG2_generator_AVX512(const char *dir, int R)
 {
   const char *ratestr[3]={"15","13","23"};
 
@@ -13,7 +13,7 @@ void nrLDPC_cnProc_BG2_generator_AVX512(int R)
  // system("mkdir -p ../ldpc_gen_files");
 
   char fname[FILENAME_MAX+1];
-  snprintf(fname, sizeof(fname), "../ldpc_gen_files/cnProc_avx512/nrLDPC_cnProc_BG2_R%s_AVX512.h", ratestr[R]);
+  snprintf(fname, sizeof(fname), "%s/cnProc_avx512/nrLDPC_cnProc_BG2_R%s_AVX512.h", dir, ratestr[R]);
   FILE *fd=fopen(fname,"w");
   if (fd == NULL) {
     printf("Cannot create file %s\n", fname);
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/main.c b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/main.c
index d3a3d16cd5..a373848d63 100644
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/main.c
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/generator_cnProc_avx512/main.c
@@ -2,18 +2,21 @@
 #include <stdio.h>
 #include <stdint.h>
 #define NB_R  3
-void nrLDPC_cnProc_BG1_generator_AVX512(int);
-void nrLDPC_cnProc_BG2_generator_AVX512(int);
-int main()
+void nrLDPC_cnProc_BG1_generator_AVX512(const char *, int);
+void nrLDPC_cnProc_BG2_generator_AVX512(const char *, int);
+int main(int argc, char *argv[])
 {
- int R[NB_R]={0,1,2};
-        for(int i=0; i<NB_R;i++){
-
-        nrLDPC_cnProc_BG1_generator_AVX512(R[i]);
-	nrLDPC_cnProc_BG2_generator_AVX512(R[i]);
-
-	}
+  if (argc != 2) {
+    fprintf(stderr, "usage: %s <output-dir>\n", argv[0]);
+    return 1;
+  }
+  const char *dir = argv[1];
 
+  int R[NB_R]={0,1,2};
+  for(int i=0; i<NB_R;i++){
+    nrLDPC_cnProc_BG1_generator_AVX512(dir, R[i]);
+    nrLDPC_cnProc_BG2_generator_AVX512(dir, R[i]);
+  }
 
   return(0);
 }
diff --git a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/run_ldpc_generators.sh b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/run_ldpc_generators.sh
index b6f59eb8c7..a89c57bcf6 100755
--- a/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/run_ldpc_generators.sh
+++ b/openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/run_ldpc_generators.sh
@@ -10,8 +10,8 @@ mkdir bnProc
 mkdir bnProc_avx512
 mkdir bnProcPc
 mkdir bnProcPc_avx512
-cd ../generator_bnProc; make; make clean; ./bnProc_gen_avx2
-cd ../generator_cnProc; make; make clean; ./cnProc_gen_avx2
-cd ../generator_bnProc_avx512; make; make clean; ./bnProc_gen_avx512
-cd ../generator_cnProc_avx512; make; make clean; ./cnProc_gen_avx512
+cd ../generator_bnProc; make; make clean; ./bnProc_gen_avx2 ../ldpc_gen_files
+cd ../generator_cnProc; make; make clean; ./cnProc_gen_avx2 ../ldpc_gen_files
+cd ../generator_bnProc_avx512; make; make clean; ./bnProc_gen_avx512 ../ldpc_gen_files
+cd ../generator_cnProc_avx512; make; make clean; ./cnProc_gen_avx512 ../ldpc_gen_files
 )