Make printf on node rank 0 the default for all bench apps

Author: janciesko

apps/bench1.cpp

@@ -197,7 +197,7 @@ int main(int argc, char *argv[]) {
 
   if (myrank == 0) {
     double send_BW = total_size_bytes / timer[0] / 1024 / 1024;
-#if false
+#if true
     printf("%i, %i, %i, %.2f, %.2f, %.2f, %.2f\n", 
           conf.num_tasks,
           conf.num_threads,
@@ -208,13 +208,15 @@ int main(int argc, char *argv[]) {
           send_BW);
 #endif
   } else {
+#if false
     double recv_BW = total_size_bytes / timer[1] / 1024 / 1024;
     printf("%i, %i, %i, %.2f, %.2f, %.2f, %.2f\n", 
            conf.num_tasks,
            conf.num_threads, 
            conf.num_partitions,
            ((double)patition_size_bytes) / 1024,
            ((double)total_size_bytes) / 1024, timer[1] /*rank1*/, recv_BW);
+#endif
   }
 
   MPI_Barrier(MPI_COMM_WORLD);

apps/bench2.cpp

@@ -11,17 +11,21 @@
 //@HEADER
 */
 
+/*
+  Similar to bench1 but delays n-1 tasks by an equal ammount of time
+*/
+
 #include "mpi.h"
 #include <cstdio>
 #include <partix.h>
 #include <stdlib.h>
 #include <unistd.h>
 
-#define DEFAULT_ITERS 5
+#define DEFAULT_ITERS 10
 #define DATA_TYPE MPI_DOUBLE
 #define USE_PARRIVED
 
-#define ALL_TASKS_SLEEP
+//#define ALL_TASKS_SLEEP_SAME_AMMOUNT
 #define DEFAULT_RECV_SEND_PARTITION_RATIO 1
 
 double timer[3] = {0.0, 0.0, 0.0};
@@ -64,15 +68,15 @@ void send_task(partix_task_args_t *args) {
   send_task_args_t *task_args = (send_task_args_t *)args->user_task_args;
 
 // First partition completion is delayed by sleep_time_ms
-#ifdef ALL_TASKS_SLEEP
-  size_t sleep_time_ms = global_conf->overlap_duration;
-  usleep(sleep_time_ms * 1000);
+size_t sleep_time_ms = 0;
+#ifdef ALL_TASKS_SLEEP_SAME_AMMOUNT
+  sleep_time_ms = global_conf->overlap_duration;
 #else
   if (task_args->partition_id == 0) {
-    size_t sleep_time_ms = global_conf->overlap_duration;
-    usleep(sleep_time_ms * 1000);
+    sleep_time_ms = global_conf->overlap_duration;
   }
 #endif
+  usleep(sleep_time_ms * 1000);
   MPI_Pready(task_args->partition_id, *task_args->request);
 }
 
@@ -202,6 +206,11 @@ int main(int argc, char *argv[]) {
     }
   }
 
+  // Measure perceived BW, that is communication as it were in the critical 
+  // path, by subtracting overlap
+  timer[0] -= iterations * (float)global_conf->overlap_duration / 1000;
+  timer[1] -= iterations * (float)global_conf->overlap_duration / 1000;
+
   timer[0] /= iterations;
   timer[1] /= iterations;
 
@@ -211,22 +220,22 @@ int main(int argc, char *argv[]) {
   if (myrank == 0) {
     double send_BW = total_size_bytes / timer[0] / 1024 / 1024;
 #if true
-    printf("%i, %i, %i, %.1f, %.2f, %.2f, %.2f, %.2f\n",
+    printf("%i, %i, %i, %.3f, %.2f, %.2f, %.2f, %.2f\n",
            conf.num_tasks,
            conf.num_threads, 
            conf.num_partitions,
-           (float)global_conf->overlap_duration,
+           (float)global_conf->overlap_duration / 1000.0,
            ((double)patition_size_bytes) / 1024,
            ((double)total_size_bytes) / 1024, timer[0] /*rank0*/, send_BW);
 #endif
   } else {
 #if false
     double recv_BW = total_size_bytes / timer[1] / 1024 / 1024;
-    printf("%i, %i, %i, %.1f, %.2f, %.2f, %.2f, %.2f\n", 
+    printf("%i, %i, %i, %.3f, %.2f, %.2f, %.2f, %.2f\n", 
           conf.num_tasks,
           conf.num_threads,
           conf.num_partitions,
-          (float)global_conf->overlap_duration,
+          (float)global_conf->overlap_duration / 1000.0,
           ((double)patition_size_bytes) / 1024,
           ((double)total_size_bytes) / 1024,
           timer[1] /*rank1*/,

apps/bench3.cpp

@@ -11,6 +11,10 @@
 //@HEADER
 */
 
+/*
+  Similar to bench2 but delays n-1 tasks by a random ammount of time
+*/
+
 #include "mpi.h"
 #include <cstdio>
 #include <partix.h>
@@ -207,6 +211,11 @@ int main(int argc, char *argv[]) {
     }
   }
 
+  // Measure perceived BW, that is communication as it were in the critical 
+  // path, by subtracting overlap
+  timer[0] -= iterations * (float)global_conf->overlap_duration / 1000;
+  timer[1] -= iterations * (float)global_conf->overlap_duration / 1000;
+
   timer[0] /= iterations;
   timer[1] /= iterations;
 
@@ -216,21 +225,21 @@ int main(int argc, char *argv[]) {
   if (myrank == 0) {
     double send_BW = total_size_bytes / timer[0] / 1024 / 1024;
 #if true
-    printf("%i, %i, %i, %.1f, %.2f, %.2f, %.2f, %.2f\n", conf.num_tasks,
+    printf("%i, %i, %i, %.3f, %.2f, %.2f, %.2f, %.2f\n", conf.num_tasks,
            conf.num_threads,
            conf.num_partitions,
-           (float)global_conf->overlap_duration,
+           (float)global_conf->overlap_duration / 1000.0,
            ((double)patition_size_bytes) / 1024,
            ((double)total_size_bytes) / 1024, timer[0] /*rank0*/, send_BW);
 #endif
   } else {
 #if false
     double recv_BW = total_size_bytes / timer[1] / 1024 / 1024;
-    printf("%i, %i, %i, %.1f, %.2f, %.2f, %.2f, %.2f\n", 
+    printf("%i, %i, %i, %.3f, %.2f, %.2f, %.2f, %.2f\n", 
           conf.num_tasks,
           conf.num_threads,
           conf.num_partitions,
-          (float)global_conf->overlap_duration,
+          (float)global_conf->overlap_duration / 1000.0,
           ((double)patition_size_bytes) / 1024,
           ((double)total_size_bytes) / 1024,
           timer[1] /*rank1*/,

scripts/run_over_overlap.sh

@@ -23,7 +23,7 @@ export QTHREAD_STACK_SIZE=8192
 export OMP_PROC_BIND=true
 export OMP_PLACES=cores
 
-overlap_default=0 #msec
+overlap_default=1 #msec
 
 FLAGS="--bind-to core --rank-by core"
 PRELOAD="-x LD_PRELOAD=/home/projects/x86-64/gcc/10.2.0/lib64/libstdc++.so.6"
@@ -46,7 +46,7 @@ for threads in {1..9..1}; do
       $FLAGS $PRELOAD -x OMP_PLACES=cores -x OMP_NUM_THREADS=$num_threads \
       -x QTHREAD_STACK_SIZE=8196  -x OMP_PROC_BIND=true \
       $binary $num_tasks $num_threads $num_part $num_partlen $overlp
-      if [[ $overlp -eq 0 ]] 
+      if [[ $overlp -eq 1 ]] 
       then
         overlp=10
       fi

src/partix.h

@@ -35,7 +35,7 @@
 #define OVERLAP_IN_MSEC_DEFAULT 100
 
 /* Used add task duration divergence as a % of OVERLAP_IN_MSEC_DEFAULT */
-#define NOISE_IN_PERCENTAGE_OF_OVERLAP 30
+#define NOISE_IN_PERCENTAGE_OF_OVERLAP 0
 
 #include <thread.h>