From 06bdb378c93e620c018ff99f817051e0792ed621 Mon Sep 17 00:00:00 2001
From: Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
Date: Tue, 1 Aug 2023 15:57:04 +0200
Subject: [PATCH] add warumup runs to overhead
Signed-off-by: Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
---
tests/test_apps/overhead.cu | 24 +++++++++++++++++++-----
1 file changed, 19 insertions(+), 5 deletions(-)
diff --git a/tests/test_apps/overhead.cu b/tests/test_apps/overhead.cu
index ac5a290..6928422 100644
--- a/tests/test_apps/overhead.cu
+++ b/tests/test_apps/overhead.cu
@@ -6,7 +6,8 @@
#include <cuda_runtime.h>
-#define ITERATIONS 10
+#define ITERATIONS 100000
+#define WARUMUPS 10
#define MEMSIZE 1024*1024
const int blocksize = 32;
@@ -31,7 +32,10 @@ int main()
printf("init CUDA\n");
cudaGetDeviceCount(&cnt);
- printf("cudaGetDeviceCount (%d iterations)\n", iterations);
+ printf("1. cudaGetDeviceCount (%d iterations)\n", iterations);
+ for (int i=0; i != WARUMUPS; i++) {
+ cudaGetDeviceCount(&cnt);
+ }
gettimeofday(&begin, NULL);
for (int i=0; i != iterations; i++) {
cudaGetDeviceCount(&cnt);
@@ -41,7 +45,11 @@ int main()
uint16_t *dev_A;
size_t A_size = MEMSIZE;
- printf("cudaMalloc/cudaFree (%d iterations)\n", iterations);
+ printf("2. cudaMalloc/cudaFree (%d iterations)\n", iterations);
+ for (int i=0; i != WARMUPS; i++) {
+ cudaMalloc( (void**)&dev_A, A_size );
+ cudaFree( dev_A );
+ }
gettimeofday(&begin, NULL);
for (int i=0; i != iterations; i++) {
cudaMalloc( (void**)&dev_A, A_size );
@@ -53,7 +61,10 @@ int main()
dim3 dimBlock( blocksize, 1 );
dim3 dimGrid( 1, 1);
- printf("kernel launch w/o parameteter (%d iterations)\n", iterations);
+ printf("3. kernel launch w/o parameteter (%d iterations)\n", iterations);
+ for (int i=0; i != WARMUPS; i++) {
+ kernel_no_param<<<dimGrid, dimBlock>>>();
+ }
gettimeofday(&begin, NULL);
for (int i=0; i != iterations; i++) {
kernel_no_param<<<dimGrid, dimBlock>>>();
@@ -71,7 +82,10 @@ int main()
cudaMalloc( (void**)&dev_A, MEMSIZE );
cudaMemset( dev_A, 1, MEMSIZE);
cudaMemset( dev_x, 2, MEMSIZE);
- printf("kernel launch w/ parameteters (%d iterations)\n", iterations);
+ printf("4. kernel launch w/ parameteters (%d iterations)\n", iterations);
+ for (int i=0; i != WARMUPS; i++) {
+ kernel<<<dimGrid, dimBlock>>>(dev_A, dev_x, dev_res, 0, 0, 0, 0);
+ }
gettimeofday(&begin, NULL);
for (int i=0; i != iterations; i++) {
kernel<<<dimGrid, dimBlock>>>(dev_A, dev_x, dev_res, 0, 0, 0, 0);
--
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