From cb5b475a28a9ef5ecbdfc317814464cbf1cf09c1 Mon Sep 17 00:00:00 2001
From: dam <dam@gudinoff>
Date: Sat, 19 Aug 2023 01:48:00 +0100
Subject: Testing performance of different loop approaches.

---
 ttt.jai | 90 +++++++++++++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 62 insertions(+), 28 deletions(-)

(limited to 'ttt.jai')

diff --git a/ttt.jai b/ttt.jai
index 22c6156..fe2655a 100644
--- a/ttt.jai
+++ b/ttt.jai
@@ -465,27 +465,22 @@ update_total_times :: (db: *Database) {
     // totals.data = .[];
 
     // TODO WIP 
-    Check what size there is for a [..] s64...
+    // Check what size there is for a [..] s64...
     
     print(">>%<<", db.total_times.count);
     // memset(totals.data, 0, db.total_times.count * size_of(s64));
     // memset(db.total_times.data, 0, size_of(type_of(db.total_times)));
 
-    for xpto: 1..20 {
+    for xpto: 1..50 {
     
     start := current_time_monotonic();
         
     for * total : db.total_times { <<total = 0; }
     
-    // 24ms
-    // for db.tasks {
-        // times : []s64 = it.times;
-        // for *total: db.total_times {
-            // <<total = add(<<total, times[it_index]);
-        // }
-    // }
-
-    // 10ms
+    //          ns/entry
+    // LLVM     14.5
+    // X64      132.4
+    //
     // totals: []s64 = db.total_times;
     // for db.tasks {
         // times : []s64 = it.times;
@@ -498,7 +493,46 @@ update_total_times :: (db: *Database) {
         // totals[6] = add(totals[6], times[6]);
     // }
 
-    // 21ms
+
+    //          ns/entry
+    // LLVM     11.2
+    // X64      119.9
+    //
+    for db.tasks {
+        for *total: db.total_times {
+            <<total = add(<<total, it.times[it_index]);
+        }
+    }
+
+
+    //          ns/entry
+    // LLVM     11.5
+    // X64      126.6
+    //
+    // for db.tasks {
+        // times : []s64 = it.times;
+        // for *total: db.total_times {
+            // <<total = add(<<total, times[it_index]);
+        // }
+    // }
+
+
+    //          ns/entry
+    // LLVM     11.8
+    // X64      134.4
+    //
+    // totals: []s64 = db.total_times;
+    // for db.tasks {
+        // times : []s64 = it.times;
+        // for 0..totals.count-1 {
+            // totals[it] = add(totals[it], times[it]);
+        // }
+    // }
+
+    //          ns/entry
+    // LLVM     11.6
+    // X64      132.3
+    //
     // for db.tasks {
         // times : []s64 = it.times;
         // for 0..db.total_times.count-1 {
@@ -506,30 +540,30 @@ update_total_times :: (db: *Database) {
         // }
     // }
 
-    unroll_week :: (code: string) -> string {
-        builder: String_Builder;
-        defer reset(*builder);
-        for 0..6 {
-            print_to_builder(*builder, code, it);
-        }
-        return builder_to_string(*builder);
-    }
-
-    totals: []s64 = db.total_times;
-    for db.tasks {
-        times : []s64 = it.times;
-        #insert #run unroll_week("totals[%1] = add(totals[%1], times[%1]);");
-    }
+    // unroll_week :: (code: string) -> string {
+        // builder: String_Builder;
+        // defer reset(*builder);
+        // for 0..6 {
+            // print_to_builder(*builder, code, it);
+        // }
+        // return builder_to_string(*builder);
+    // }
+// 
+    // totals: []s64 = db.total_times;
+    // for db.tasks {
+        // times : []s64 = it.times;
+        // #insert #run unroll_week("totals[%1] = add(totals[%1], times[%1]);");
+    // }
 
     
 
     stop := current_time_monotonic();
-    average: float64 = xx to_microseconds(stop-start);
+    average: float64 = xx to_nanoseconds(stop-start);
     x_average = (average + x_count * x_average) / (x_count + 1);
     x_count += 1;
     }
     
-    print("Measured % us.\n", x_average);
+    print("Measured % ns/entry.\n", x_average/(cast(float64)db.tasks.count));
 }
 
 // Resets the times of the provided task (and adjusts database totals).
-- 
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