Added support for writing varying local data size in each process

CMakeLists.txt

@@ -106,6 +106,14 @@ if(WITH_ASYNC_VOL)
     target_link_libraries(h5bench_util asynchdf5 h5async)
 endif()
 
+# h5bench WRITE varying particle based on normal distribution ######################
+#
+
+set(h5bench_write_var_normal_dist_src h5bench_patterns/h5bench_write_var_normal_dist.c)
+
+add_executable(h5bench_write_var_normal_dist ${h5bench_write_var_normal_dist_src})
+target_link_libraries(h5bench_write_var_normal_dist h5bench_util hdf5 z m ${CMAKE_DL_LIBS} MPI::MPI_C) 
+
 # h5bench WRITE ###############################################################
 #
 
@@ -285,6 +293,7 @@ install(
     TARGETS
     h5bench_write
     h5bench_write_unlimited
+    h5bench_write_var_normal_dist
     h5bench_overwrite
     h5bench_append
     h5bench_read

commons/h5bench_util.c

@@ -935,6 +935,15 @@ _set_params(char *key, char *val_in, bench_params *params_in_out, int do_write)
             return -1;
         }
     }
+    else if (strcmp(key, "STDEV_DIM_1") == 0) {
+        unsigned long long stdev_dim_1 = atoi(val);
+        if (stdev_dim_1 >= 0)
+            (*params_in_out).stdev_dim_1 = stdev_dim_1;
+        else {
+            printf("STDEV_DIM_1 must be >=0\n");
+            return -1;
+        }
+    }
     else {
         printf("Unknown Parameter: %s\n", key);
         return -1;
@@ -986,6 +995,7 @@ bench_params_init(bench_params *params_out)
     (*params_out).chunk_dim_3   = 1;
     (*params_out).csv_path      = NULL;
     (*params_out).env_meta_path = NULL;
+    (*params_out).stdev_dim_1   = 1;
 
     (*params_out).csv_path        = NULL;
     (*params_out).csv_fs          = NULL;
@@ -1157,6 +1167,9 @@ print_params(const bench_params *p)
         printf("    align threshold = %ld\n", p->align_threshold);
         printf("    align length = %ld\n", p->align_len);
     }
+    if (p->stdev_dim_1) {
+        printf("Standard deviation for varying particle size in normal distribution = %ld\n", p->stdev_dim_1);
+    }
     printf("===========================================================\n");
     printf("\n");
 }

commons/h5bench_util.h

@@ -130,6 +130,7 @@ typedef struct bench_params {
     int           align;
     unsigned long align_threshold;
     unsigned long align_len;
+    unsigned long stdev_dim_1;
 } bench_params;
 
 typedef struct data_md {