From 2a099da5b758ab697e9508817f7282e6d7868838 Mon Sep 17 00:00:00 2001
From: Maximilian Gaul <ptfs410h@woody3.rrze.uni-erlangen.de>
Date: Fri, 3 Dec 2021 08:13:43 +0100
Subject: [PATCH] Started cuda profiling, added first result to logbook

---
 src/force.cu | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/force.cu b/src/force.cu
index 8724342..a2c397e 100644
--- a/src/force.cu
+++ b/src/force.cu
@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stddef.h>
+#include <cuda_profiler_api.h>
 #include <cuda_runtime.h>
 #include <device_launch_parameters.h>
 
@@ -122,6 +123,8 @@ double computeForce(
     MD_FLOAT epsilon = param->epsilon;
 #endif
 
+    cudaProfilerStart();
+
     for(int i = 0; i < Nlocal; i++) {
         fx[i] = 0.0;
         fy[i] = 0.0;
@@ -129,7 +132,12 @@ double computeForce(
     }
 
     const char *num_threads_env = getenv("NUM_THREADS");
-    const int num_threads = atoi(num_threads_env);
+    int num_threads = 0;
+    if(num_threads_env == nullptr)
+        num_threads = 2;
+    else {
+        num_threads = atoi(num_threads_env);
+    }
 
     Atom c_atom;
     c_atom.Natoms = atom->Natoms;
@@ -225,6 +233,8 @@ double computeForce(
 
     cudaFree(c_neighs); cudaFree(c_neigh_numneigh);
 
+    cudaProfilerStop();
+
     LIKWID_MARKER_STOP("force");
     double E = getTimeStamp();