search for: oc_state_borders_fill_row

...with the parallel implementation. T1 should be at most 0.66To. I will use the pthread implementation to try a pipelined version and see if we obtain more gains. These version will run the functions (c_dec_dc_unpredict_mcu_plane + oc_dec_frags_recon_mcu_plane) and (oc_state_loop_filter_frag_rows + oc_state_borders_fill_rows) in parallel. The upper bound for the gain is 60%, that is, let T2 be a video decoded with the pipelined implementation. T2 should be at most 0.4To. Here is the branch for the OpenMP implementation: http://svn.xiph.org/branches/theora_multithread_decode_omp/ Here is the branch for the PThread imp...

...l is to inform what I have been doing since the mid-term. After the mid-term I worked on a pipeline implementation with OpenMP. As I said before I did a pipelined implementation of these functions: (c_dec_dc_unpredict_mcu_plane + oc_dec_frags_recon_mcu_plane) and (oc_state_loop_filter_frag_rows + oc_state_borders_fill_rows) as explained in my previous email. But the results were not good. They were equal the implementation without pipeline. http://lampiao.lsc.ic.unicamp.br/~piga/gsoc_2008/comparison.png http://lampiao.lsc.ic.unicamp.br/~piga/gsoc_2008/speedup.png http://lampiao.lsc.ic.unicamp.br/~piga/gsoc_2008/sys...

...at it is not the case. For coarse grain jobs they >> are equivalent >> >>> >>> >>> > These version will run the functions (c_dec_dc_unpredict_mcu_plane + >>> > oc_dec_frags_recon_mcu_plane) and >>> > (oc_state_loop_filter_frag_rows + oc_state_borders_fill_rows) in >>> > parallel. The upper bound for the gain is 60%, that is, let T2 be a >>> > video decoded with the pipelined implementation. T2 should be at most >>> > 0.4To. >>> >>> I think you mean "at least". Let us know what your test res...

...0.0901 15 0.0039 dump oc_frag_recon_intra 470 0.0832 505 0.1301 dump oc_token_dec1val_cat2 445 0.0788 96 0.0247 dump oc_token_dec1val_zrl 344 0.0609 81 0.0209 dump oc_state_borders_fill_rows 324 0.0574 237 0.0611 dump oc_restore_fpu_mmx 260 0.0460 36 0.0093 dump main 218 0.0386 83 0.0214 dump stripe_decoded 213 0.0377 67 0.0173 dump oc_token_skip_z...