Hi everyone, I am trying to use GPU offloading to improve my tesseract performance.
- Tesseract off of 'master' with commit 45a6546 - 4 Nvidia Titan XPs - Driver version 390.48 - OpenCL 7.5.18-0ubuntu1 When running tesseract built with opencl support, I do see it dump a profiler file: <version>v0.1</version> <device><type> </type><name>TITAN Xp</name><driver>390.48</driver><score>▒▒> </score></device> <device><type> </type><name>TITAN Xp</name><driver>390.48</driver><score>▒m> </score></device> <device><type> </type><name>TITAN Xp</name><driver>390.48</driver><score>Q▒▒> </score></device> <device><type> </type><name>TITAN Xp</name><driver>390.48</driver><score>▒sl> </score></device> <device><type> </type><score>-▒▒? </score></device> When running with a CPU-based tesseract binary, I see a performance of around 1.766 seconds on a particular image I have: $ time /usr/bin/tesseract sample.jpg out.txt Tesseract Open Source OCR Engine v4.0.0-beta.1 with Leptonica real 0m1.766s user 0m4.572s sys 0m0.138s When running on the GPU I see a pretty significant degradation in performance. It is picking the GPUs based on the profiling: $ time local/bin/tesseract sample.jpg out.txt [DS] Profile read from file (tesseract_opencl_profile_devices.dat). [DS] Device[1] 1:TITAN Xp score is 0.230911 [DS] Device[2] 1:TITAN Xp score is 0.230911 [DS] Device[3] 1:TITAN Xp score is 0.230911 [DS] Device[4] 1:TITAN Xp score is 0.230911 [DS] Device[5] 0:(null) score is 1.607031 [DS] Selected Device[1]: "TITAN Xp" (OpenCL) Tesseract Open Source OCR Engine v4.0.0-beta.1-232-g45a6 with Leptonica real 0m2.410s user 0m5.001s sys 0m0.591s Might anyone have some suggestions as to how I can check what the cause of this is? I'd greatly appreciate any help. I do understand that this is beta and still in develop. I've read that performance improvements may not be experienced. Is the degredation due to time uploading to the GPU outweighing the performance benefit? Thanks! George -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tesseract-ocr. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/5b0eb8ab-83e9-4156-9a86-b23bf2a52dde%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
