[INFO] Assembler optimized TTH hashing

CeeJay · Post by **CeeJay** » 2004-07-19 08:09

You might be interested to know that camper from the Shareaza forums have made optimized assembler hashing for all of the types of hashing that Shareaza use , one of them being TTH (which DC++ have recently begun to use).

The assembler code is quite a bit faster than the original code and he is currently working on improving it even futher.

DC++ could probably benefit from gleaning at this code .. Shareaza is also a opensource project.

You can find threads on this subject in the Code Discussion area of the Shareaza forums :
http://forums.shareaza.com/forumdisplay ... forumid=53

Threads to look for are thoose that mention assembler and faster hashing.

or you could just contact Camper.

Todi · Post by **Todi** » 2004-07-19 09:46

Sweet, it was supposedly improved by 80%, which is always nice. But then again, it could have been really slow to being with...

These appear to be the main threads:
http://forums.shareaza.com/showthread.p ... adid=22516
http://forums.shareaza.com/showthread.p ... adid=22292

cologic · Post by **cologic** » 2004-07-19 09:54

While one welcomes any CPU optimizations, I'm not sure of this's usefulness, given that the primary complain appears not to be insufficient hashing speed but its ability to interfere with concurrent computer usage.

Post by **GargoyleMT** » 2004-07-19 19:44

Nifty. A sidenote is that DC++ is portable to the Mac, so that should enter into consideration too.

PseudonympH · Post by **PseudonympH** » 2004-07-19 23:05

I don't think it would be too hard to add a #ifdef _WIN32 to use the assembly when we can...

Post by **GargoyleMT** » 2004-07-20 07:08

PseudonympH wrote:I don't think it would be too hard to add a #ifdef _WIN32 to use the assembly when we can...

Ugly, though. And wouldn't Alpha, PPC, and MIPS be _WIN32 as well, for their Windows NT 4.0 ports?