diff --git a/fftma_module/gen/lib_src/chunk_array.c b/fftma_module/gen/lib_src/chunk_array.c
index 58d0c74..607bdbf 100644
--- a/fftma_module/gen/lib_src/chunk_array.c
+++ b/fftma_module/gen/lib_src/chunk_array.c
@@ -7,14 +7,20 @@ void chunk_array_free(chunk_array_t* chunk_array) {
 	free(chunk_array);  
 }
 
-bool chunk_array_update_read(chunk_array_t* chunk_array) {
+bool chunk_array_update_read(chunk_array_t* chunk_array, size_t pos) {
+
+    int init_pos = pos/chunk_array->chunk_size;
+
+    fseek(chunk_array->fp, init_pos * chunk_array->chunk_size * sizeof(double), SEEK_SET);
+    
     size_t newLen = fread(chunk_array->data, sizeof(double), chunk_array->chunk_size, chunk_array->fp);
     chunk_array->init_pos += newLen;
 }
 
+/*
 bool chunk_array_get(chunk_array_t* chunk_array, size_t pos, double *valor) {
 	if (pos>((chunk_array->init_pos + chunk_array->chunk_size)-1)) {
-        chunk_array_update_read(chunk_array);
+        chunk_array_update_read(chunk_array, pos);
 	}
     *valor=chunk_array->data[pos%chunk_array->chunk_size];
     return true;
@@ -27,6 +33,7 @@ bool chunk_array_save(chunk_array_t* chunk_array, size_t pos, double valor) {
 	chunk_array->data[pos%chunk_array->chunk_size]=valor;
 	return true;
 }
+*/
 
 chunk_array_t* chunk_array_create(char* filename, size_t total_size, size_t chunk_size) {
     chunk_array_t* chunk_array = (chunk_array_t*)malloc(sizeof(chunk_array_t));
@@ -56,6 +63,7 @@ void chunk_array_read(chunk_array_t* chunk_array) {
     size_t newLen = fread(chunk_array->data, sizeof(double), chunk_array->chunk_size, chunk_array->fp);
 }
 
+/*
 void chunk_array_write(chunk_array_t* chunk_array, char* filename) {
     chunk_array->fp = fopen(filename, "w");
     if (chunk_array->fp == NULL) {
@@ -63,9 +71,22 @@ void chunk_array_write(chunk_array_t* chunk_array, char* filename) {
         chunk_array->fp = fopen(filename, "w");
     }
     chunk_array->init_pos = 0;
-}
+}*/
 
 void chunk_array_flush(chunk_array_t* chunk_array) {
     size_t newLen = fwrite(chunk_array->data, sizeof(double), chunk_array->chunk_size, chunk_array->fp);
     chunk_array->init_pos += newLen;
 }
+
+
+bool chunk_array_get(chunk_array_t* chunk_array, size_t pos, double *valor) {
+	fseek(chunk_array->fp, pos * sizeof(double), SEEK_SET);
+    fread(valor, sizeof(double), 1, chunk_array->fp);
+    return true;
+}
+
+bool chunk_array_save(chunk_array_t* chunk_array, size_t pos, double valor) {
+	fseek(chunk_array->fp, pos * sizeof(double), SEEK_SET);
+    fwrite(&valor, sizeof(double), 1, chunk_array->fp);
+	return true;
+}
\ No newline at end of file
diff --git a/fftma_module/gen/lib_src/fftma2.c b/fftma_module/gen/lib_src/fftma2.c
index 9ead660..dcca2ff 100644
--- a/fftma_module/gen/lib_src/fftma2.c
+++ b/fftma_module/gen/lib_src/fftma2.c
@@ -66,7 +66,6 @@ void FFTMA2(struct vario_mod variogram, struct grid_mod grid, int n[3], struct r
     covariance(covar, variogram, grid, n, cores);
 
     /*power spectrum*/
-    printf("Running with covar and ireal\n");
     fourt(covar, ireal, n, NDIM, 1, 0, workr, worki, cores);
 
     /*organization of the input Gaussian white noise*/
@@ -74,17 +73,15 @@ void FFTMA2(struct vario_mod variogram, struct grid_mod grid, int n[3], struct r
     prebuild_gwn(grid, n, realin, realization, solver, cores, seed);
 
     /*forward fourier transform of the GWN*/
-    printf("Running with realization and ireal\n");
     fourt(realization, ireal, n, NDIM, 1, 0, workr, worki, cores);
 
     /* build realization in spectral domain   */
     build_real(n, NTOT, covar, realization, ireal, cores);
 
     chunk_array_free(covar);
-    //remove("covar.txt");
+    remove("covar.txt");
 
     /*backward fourier transform*/
-    printf("Running with realization and ireal\n");
     fourt(realization, ireal, n, NDIM, 0, 1, workr, worki, cores);
 
     chunk_array_free(ireal);
diff --git a/fftma_module/gen/lib_src/prebuild_gwn.c b/fftma_module/gen/lib_src/prebuild_gwn.c
index a6382cf..e228890 100644
--- a/fftma_module/gen/lib_src/prebuild_gwn.c
+++ b/fftma_module/gen/lib_src/prebuild_gwn.c
@@ -34,14 +34,10 @@ void prebuild_gwn(struct grid_mod grid, int n[3], struct realization_mod* realin
 
     ntot = n[0] * n[1] * n[2];
     chunk_array_save(realization, 0, 0.);
-    /*printf("Antes de llamar a chunkarray read\n");
-    chunk_array_read((*realin).vector_2);
-    printf("Despues de llamar a chunkarray read\n");*/
     if (solver == 1) {
         for (i = 0; i < ntot; i++) {
             double value = gasdev(seed, &idum2, &iy, iv, cores);
             chunk_array_save(realization, i+1, value);
-            //chunk_array_get((*realin).vector_2, i, &realization[i + 1]);
         }
     } else {
         for (k = 1; k <= n[2]; k++) {
@@ -49,11 +45,8 @@ void prebuild_gwn(struct grid_mod grid, int n[3], struct realization_mod* realin
                 for (i = 1; i <= n[0]; i++) {
                     maille1 = i + (j - 1 + (k - 1) * n[1]) * n[0];
                     if (i <= grid.NX && j <= grid.NY && k <= grid.NZ) {
-                        //maille0 = i - 1 + (j - 1 + (k - 1) * grid.NY) * grid.NX;
-                        //printf("Maille0 es %d", maille0);
                         double value = gasdev(seed, &idum2, &iy, iv, cores);
                         chunk_array_save(realization, maille1, value);
-                        //chunk_array_get((*realin).vector_2, maille0, &realization[maille1]);
                     } else {
                         chunk_array_save(realization, maille1, 0.);
                     }
diff --git a/fftma_module/gen/test.py b/fftma_module/gen/test.py
index 660a103..7b23a40 100644
--- a/fftma_module/gen/test.py
+++ b/fftma_module/gen/test.py
@@ -29,9 +29,9 @@ variance=3.5682389
 typ=3
 
 k=gen(nx, ny, nz, dx, dy, dz, seed, variograms, mean, variance, typ, 8)
+k2 = np.load("out_2_16.npy")
 
-#np.save(f"out_{N}.npy",k)
-#k2 = np.load("out_2_16.npy")
+print(k - k2)
 
 del k
 gc.collect()
\ No newline at end of file