From 1a0a068b87e3f04e9c7301b6c7b238dc4baf1af2 Mon Sep 17 00:00:00 2001
From: Benji Dial <benji@benjidial.net>
Date: Tue, 30 May 2023 21:49:05 -0400
Subject: move tabulator-mpi's parameters into separate file for easier
 changing

---
 tabulator-mpi/constants.hpp | 3 +++
 tabulator-mpi/head.cpp      | 9 ++++++---
 tabulator-mpi/worker.cpp    | 6 ++++--
 3 files changed, 13 insertions(+), 5 deletions(-)
 create mode 100644 tabulator-mpi/constants.hpp

diff --git a/tabulator-mpi/constants.hpp b/tabulator-mpi/constants.hpp
new file mode 100644
index 0000000..c8f18e2
--- /dev/null
+++ b/tabulator-mpi/constants.hpp
@@ -0,0 +1,3 @@
+#define STEPS_TO_TIE 1000000
+#define ROUNDS_PER_CHUNK 100
+#define CHUNKS_PER_PAIR 10
diff --git a/tabulator-mpi/head.cpp b/tabulator-mpi/head.cpp
index e2372bc..bd270af 100644
--- a/tabulator-mpi/head.cpp
+++ b/tabulator-mpi/head.cpp
@@ -2,6 +2,8 @@
 #include <cstdio>
 #include <mpi.h>
 
+#include "constants.hpp"
+
 static int **score_results;
 
 static int get_result() {
@@ -26,11 +28,12 @@ void head_main(int comm_size, int warrior_count, const lib94::warrior *const *wa
   for (int i = 0; i < warrior_count; ++i)
     for (int j = i + 1; j < warrior_count; ++j) {
       fprintf(stderr, "%s vs %s\n", warriors[i]->name.c_str(), warriors[j]->name.c_str());
-      for (int x = 0; x < 10; ++x) {
+      for (int x = 0; x < CHUNKS_PER_PAIR; ++x) {
         int rank = get_result();
-        int message[3] = {i, j, x * 100};
+        int message[3] = {i, j, x * ROUNDS_PER_CHUNK};
         MPI_Send(message, 2, MPI_INT, rank, 0, MPI_COMM_WORLD);
-        fprintf(stderr, "sent rounds %d through %d to worker %d\n", x * 100 + 1, x * 100 + 100, rank);
+        fprintf(stderr, "sent rounds %d through %d to worker %d\n",
+          x * ROUNDS_PER_CHUNK + 1, x * ROUNDS_PER_CHUNK + ROUNDS_PER_CHUNK, rank);
       }
       fputc('\n', stderr);
     }
diff --git a/tabulator-mpi/worker.cpp b/tabulator-mpi/worker.cpp
index 47b8eeb..5a20db2 100644
--- a/tabulator-mpi/worker.cpp
+++ b/tabulator-mpi/worker.cpp
@@ -1,6 +1,8 @@
 #include <lib94/lib94.hpp>
 #include <mpi.h>
 
+#include "constants.hpp"
+
 static int do_round(const lib94::warrior *w1, const lib94::warrior *w2) {
   const lib94::warrior *ws[2] = {w1, w2};
 
@@ -14,7 +16,7 @@ static int do_round(const lib94::warrior *w1, const lib94::warrior *w2) {
 
   lib94::init_round(ws, 2);
 
-  for (int i = 0; i < 1000000; ++i) {
+  for (int i = 0; i < STEPS_TO_TIE; ++i) {
     const lib94::warrior *result = lib94::single_step<false>();
     if (result == w1)
       return -1;
@@ -37,7 +39,7 @@ void worker_main(const lib94::warrior *const *warriors) {
 
     buffer[2] = 0;
 
-    for (int i = 0; i < 100; ++i)
+    for (int i = 0; i < ROUNDS_PER_CHUNK; ++i)
       buffer[2] += do_round(warriors[buffer[0]], warriors[buffer[1]]);
   }
 }
-- 
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