Hi Barry, both version were run with one thread, but with multi-thread support compiled in. The slow-down is similar for 8 threads, just scaled proportionally, 170 seconds vs 135 seconds.
I've noticed that effect while I was checking the performance of my phrase table after merging with master and first thought that it is my fault, but I have the same effect with the standard phrase table, as reported below. How exactly do you want me to profile the versions? Best, Marcin W dniu 05.08.2012 16:07, Barry Haddow pisze: > Hi Marcin > > Is this single-threaded or multi-threaded Moses? One possible issue is > that threads are now compiled in by default, so even if you run with a > single thread then you still pay some locking penalties. I'm not sure > that this should make the large difference that you observe though. You > can compile without threads to avoid the locking. > > I haven't noticed any significant slow-down, but we don't monitor > performance too carefully here (although we probably should). I'd be > interested to see a profile of the two versions that you tested, > > cheers - Barry > > On 05/08/12 11:27, Marcin Junczys-Dowmunt wrote: >> Hi, >> has anyone noticed that Moses seems to be about 20-30% slower than about >> a year ago? I happen to have a checkout from last September lying >> around. With the same settings, and the same data the translation of >> 1000 sentences takes around 925 seconds now, but 690 seconds with the >> September version. Translation results are the same. >> >> I use the same binary phrase table with around 200 million phrase pairs, >> no lexical reordering, the same 3-gram KenLm language model, but >> compiled to the corresponding format which changed between versions. The >> data is fully cached in the operational system read cache, so it seems >> this are processing issues. >> >> Has anyone else noticed something like that? >> Best, >> Marcin >> _______________________________________________ >> Moses-support mailing list >> [email protected] >> http://mailman.mit.edu/mailman/listinfo/moses-support >> > -- dr inż. Marcin Junczys-Dowmunt Uniwersytet im. Adama Mickiewicza Wydział Matematyki i Informatyki ul. Umultowska 87 61-614 Poznań _______________________________________________ Moses-support mailing list [email protected] http://mailman.mit.edu/mailman/listinfo/moses-support
