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Diffstat (limited to 'readme.txt')
| -rw-r--r-- | readme.txt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/readme.txt b/readme.txt new file mode 100644 index 0000000..d9646d9 --- /dev/null +++ b/readme.txt @@ -0,0 +1,19 @@ +This is a toy program to play with cache line alignment. + +The program iterates over a 2D array and modify the elements, and record +the time it takes for the traversal. +Each array row has a tailing padding of OFF*4 bytes (i.e. OFF x sizeof(int)). +The padding elements are NOT traversed, they are only there to make the array +misaligned. + +The makefile builds 17x binaries with OFF = 0...16. The testall.sh script +runs each of them 100 times and print the averaged output. + +Build: +$make + +run: +$sh testall.sh + + +Play around: change the demensions of the array and the loop operations. |