My src.jpg size is 549 * 412 about 59kb.fmw42 wrote:As I understand it, OpenCL has a non-negligible overhead. So for small image, it may be slower than without due to the overhead. I do not know what size your input image is.
Search found 4 matches
- 2014-10-20T20:11:25-07:00
- Forum: Bugs
- Topic: using opencl is slower in resize
- Replies: 5
- Views: 3814
Re: using opencl is slower in resize
- 2014-10-20T18:35:41-07:00
- Forum: Bugs
- Topic: using opencl is slower in resize
- Replies: 5
- Views: 3814
Re: using opencl is slower in resize
By the way, has anybody knowns wether need some special configuration that make opencl speed up works, or post your benchmark about using opencl
- 2014-10-19T20:30:40-07:00
- Forum: Bugs
- Topic: using opencl is slower in resize
- Replies: 5
- Views: 3814
Re: using opencl is slower in resize
Hi, I had test version ImageMagick-6.8.9-9 >convert src.jpg -filter box -resize 248x248 -bench 30 logo.jpg openmp: Performance[1]: 30i 115.385ips 1.000e 0.370u 0:00.260 Performance[2]: 30i 120.000ips 0.510e 0.360u 0:00.250 Performance[3]: 30i 115.385ips 0.500e 0.370u 0:00.260 Performance[4]: 30i 78 ...
- 2014-10-19T01:14:43-07:00
- Forum: Bugs
- Topic: using opencl is slower in resize
- Replies: 5
- Views: 3814
using opencl is slower in resize
Hi, in latest version ImageMagick-6.8.9-8, i compile with opencl and test resize(convert src.jpg -filter box -resize 248x248 -bench 30 logo.jpg) but the performance of using opencl is slower than only use cpu openmp. I use cuda6.5 >convert src.jpg -filter box -resize 248x248 -bench 30 logo.jpg ...