Λύση εργασίας 3 (OpenMP)
- Google advanced image search
- tiger.bmp 3200X2400
- tiger.bmp (3200x2400 ~20MB)
-
Κώδικας https://github.com/chgogos/ceteiep_pdc/tree/master/lab2020/assignment2_sol
############################################## CPU: Intel Core i7-7700K @ 4.2GHz (4C/8T) RAM: 32GB DDR4 ———————————————- Windows 10 ##############################################
Εκτέλεση σειριακού κώδικα
$ cd C1-imflip
$ gcc imflip.c ImageStuff.c -o imflip
$ imflip.exe tiger.bmp tigerH.bmp H
Input BMP File name: tiger.bmp (3200 x 2400)
Output BMP File name: tigerH.bmp (3200 x 2400)
Total execution time: 5566.0000 ms (724.740 ns per pixel)
$ imflip.exe tiger.bmp tigerV.bmp V
Input BMP File name: tiger.bmp (3200 x 2400)
Output BMP File name: tigerV.bmp (3200 x 2400)
Total execution time: 11823.0000 ms (1539.453 ns per pixel)
Εκτέλεση παράλληλου κώδικα με pthreads
$ cd C2-imflipP
$ gcc imflipP.c ImageStuff.c -o imflipP
$ imflipP.exe tiger.bmp tigerH.bmp H 8
Executing the multi-threaded version with 8 threads ...
Input BMP File name: tiger.bmp (3200 x 2400)
Output BMP File name: tigerH.bmp (3200 x 2400)
Total execution time: 1638.9710 ms (Horizontal flip) (213.408 ns/pixel)
$ imflipP.exe tiger.bmp tigerV.bmp V 8
Executing the multi-threaded version with 8 threads ...
Input BMP File name: tiger.bmp (3200 x 2400)
Output BMP File name: tigerV.bmp (3200 x 2400)
Total execution time: 3023.0000 ms (Vertical flip) (393.620 ns/pixel)
Εκτέλεση κώδικα με OpenMP
$ cd C2-imflipOMP
$ gcc imflipOMP.c ImageStuff.c -o imflipOMP -fopenmp
$ imflipOMP.exe tiger.bmp tigerH.bmp H 8
Input BMP File name: tiger.bmp (3200 x 2400)
Output BMP File name: tigerH.bmp (3200 x 2400)
Total execution time: 1518.9998 ms (197.786 ns per pixel)
$ imflipOMP.exe tiger.bmp tigerV.bmp V 8
Input BMP File name: tiger.bmp (3200 x 2400)
Output BMP File name: tigerV.bmp (3200 x 2400)
Total execution time: 2809.0000 ms (365.755 ns per pixel)
Horizontal (χρόνος εκτέλεσης σε ms)
| Threads | Pthreads | OpenMP |
|---|---|---|
| 1 | 5621.0 | 5596.9 |
| 2 | 3093.5 | 2888.0 |
| 3 | 2280.0 | 2053.9 |
| 4 | 2202.9 | 1885.9 |
| 5 | 2168.9 | 2056.9 |
| 6 | 1888.9 | 1775.9 |
| 7 | 1692.9 | 1583.9 |
| 8 | 1616.0 | 1480.0 |
Vertical (χρόνος εκτέλεσης σε ms)
| Threads | Pthreads | OpenMP |
|---|---|---|
| 1 | 11804.9 | 11832.0 |
| 2 | 6712.0 | 6279.0 |
| 3 | 4966.0 | 4529.0 |
| 4 | 4264.9 | 4010.9 |
| 5 | 3919.9 | 3673.0 |
| 6 | 3423.0 | 3204.9 |
| 7 | 3124.0 | 3076.0 |
| 8 | 3188.0 | 3155.0 |