On 03/02/2015 15:05, John N1ISA wrote: > Greetings All, Hi John, > > In Dr. Taylor's recent posting stating his improvements to the decoder > performance in the WSJTX Development Branch release r4926, he stated that, > "further improvements can probably be made by using more than one core > concurrently, e.g., by using OpenMP". > > I am using the the Development Branch release 4926 in a Ubuntu Linux > environment, using the compiling techniques developed by Bill, G4WJS. > > In Ubuntu Package Repository there is a libgomp1 package... a GCC OpenMP > (GOMP) support library. > > Would the performance improvements stated by Joe, K1JT, in his posting > about using "OpenMP", be as simple as installing the Ubuntu libgomp1 > package? No. Converting single threaded code to run correctly distributed across multiple threads is non-trivial and requires code changes and a great deal of analysis and testing. > > I do use a i7-4770 CPU Machine, and even from my layman's perspective this > might be overkill, by I do enjoy tweaking performance. I have been able to > decode 12 signals frequently, and very fast, when all the required > variables are in place. My radio's audio passband, and my WSJTX settings do > limit my decode performance, but I always wondered if I could decode more > signals if present in my passband/waterfall. In my setup, 12 decodes has > like a "fixed" threshold that I can not get past. > > Thanks to all the developer's/contributor's to the excellent WSJTX > software. WSJTX has given me countless hours of radio/computer/QSO > enjoyment. I recently taught myself how to compile in Linux, and following > the WSJTX development branch is much fun also. > > Truly, Sincerely, Thanks! > > 73, John, N1ISA 73 Bill G4WJS.
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