From b51f2e1c254cdd74c9e43904c62694f64e6ae7e6 Mon Sep 17 00:00:00 2001
From: Michael Bien <mbien@fh-landshut.de>
Date: Mon, 12 Apr 2010 22:03:38 +0200
Subject: cleaned up benchmark, added queue.finish() and more iterations for
better results.
---
.../opencl/demos/radixsort/RadixSortDemo.java | 23 ++++++++++++++--------
1 file changed, 15 insertions(+), 8 deletions(-)
(limited to 'src')
diff --git a/src/com/mbien/opencl/demos/radixsort/RadixSortDemo.java b/src/com/mbien/opencl/demos/radixsort/RadixSortDemo.java
index a46eb22..93bc071 100644
--- a/src/com/mbien/opencl/demos/radixsort/RadixSortDemo.java
+++ b/src/com/mbien/opencl/demos/radixsort/RadixSortDemo.java
@@ -30,11 +30,14 @@ public class RadixSortDemo {
context = CLContext.create(CLPlatform.getDefault().getMaxFlopsDevice(GPU));
CLCommandQueue queue = context.getDevices()[0].createCommandQueue();
- int maxValue = 10000000;
+ int maxValue = Integer.MAX_VALUE;
+ int samples = 10;
int[] workgroupSizes = new int[] {128, 256};
- int[] runs = new int[] { 131072,
+ int[] runs = new int[] { 32768,
+ 65536,
+ 131072,
262144,
524288,
1048576,
@@ -50,8 +53,9 @@ public class RadixSortDemo {
for(int run = 0; run < runs.length; run++) {
- if(workgroupSize==128 && run == runs.length-1) {
- break; // we can only sort up to 4MB with wg size of 128
+ if( workgroupSize==128 && runs[run] >= 8388608
+ || workgroupSize==256 && runs[run] <= 32768) {
+ continue; // we can only sort up to 4MB with wg size of 128
}
int numElements = runs[run];
@@ -63,15 +67,18 @@ public class RadixSortDemo {
fillBuffer(array, maxValue);
RadixSort radixSort = new RadixSort(queue, numElements, workgroupSize);
- queue.finish();
+ for(int a = 0; a < samples; a++) {
- long time = currentTimeMillis();
+ queue.finish();
+
+ long time = nanoTime();
queue.putWriteBuffer(array, false);
radixSort.sort(array, numElements, 32);
queue.putReadBuffer(array, true);
- out.println("time: " + (currentTimeMillis() - time)+"ms");
+ out.println("time: " + (nanoTime() - time)/1000000.0f+"ms");
+ }
out.print("snapshot: ");
printSnapshot(array.getBuffer(), 20);
@@ -84,7 +91,7 @@ public class RadixSortDemo {
radixSort.release();
}
}
-
+
}finally{
if(context != null) {
context.release();
--
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