From a3886552003d031acb9039e920b7c9ddce946ad6 Mon Sep 17 00:00:00 2001
From: Joshua Bakita <jbakita@cs.unc.edu>
Date: Sat, 17 Oct 2020 14:43:46 -0400
Subject: DIS fixes used for (rejected) RTSS'20 submission

- All: Output times to stderr and nothing to stdout
- Field, Update, Pointer: change definition of a job to match other
  stressmark execution times more closely
- Matrix: move all allocations into main()
- Update: Use volatile to prevent computations from being optimized out
- Transitive: Use volatile to prevent computations from being optimized out
- Neighborhood: Use working version of drawLineSegment from original DIS
  sample code
---
 dis/Update/update.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

(limited to 'dis/Update/update.c')

diff --git a/dis/Update/update.c b/dis/Update/update.c
index 1fd8197..f5e770a 100644
--- a/dis/Update/update.c
+++ b/dis/Update/update.c
@@ -48,7 +48,7 @@ int main(int argc, char** argv){
   unsigned short int w;
   unsigned int maxhops;
   int seed;
-  time_t startTime;
+  time_t startTime, endTime;
   unsigned int initial;
   unsigned int minStop;
   unsigned int maxStop;
@@ -83,6 +83,7 @@ int main(int argc, char** argv){
   hops = 0;
   index = initial;
 
+  START_LOOP
   while ((hops < maxhops) &&
 	(!((index >= minStop) &&
 	   (index < maxStop)))){    
@@ -92,7 +93,6 @@ int main(int argc, char** argv){
     unsigned int max, min;
     unsigned int partition;
     unsigned int high;
-    if (hops % 100 == 0) {START_LOOP} // These loops are too quick to sample individually
     max = MAX_FIELD_SIZE;
     min = 0;
     high = 0;
@@ -125,13 +125,15 @@ int main(int argc, char** argv){
     field[index] = sum % (f-w);
     index = (partition+hops)%(f-w);
     hops++;
-    if (hops % 100 == 0) {STOP_LOOP} // These loops are too quick to sample individually
   }/* end for loop */
+  STOP_LOOP
 
-  startTime = time(NULL) - startTime;
+  endTime = time(NULL);
 
-  fprintf(stdout, "%u hops\n", hops);
-  fprintf(stderr, "total time = %u seconds.\n", (unsigned int)startTime);
+  volatile int _stop_optimizer = hops;
+  //fprintf(stdout, "%u hops\n", hops);
+  fprintf(stderr, "time for update stressmark = %f seconds.\n",
+          difftime(endTime, startTime));
   free(field);
   WRITE_TO_FILE
   return(1);
-- 
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