PB 4.0 Performance

[Thomas]

Because PB 4.0 goes for thread safety and new types, I was a bit afraid that all this new stuff would hurt performance somehow. But now that my chess program has been converted to the new PB 4.0 syntax, I have to admit that I'm quite impressed. Although some critical parts of the game are coded in assembler, the new compiler gives a 15% speed improvement. The size of the executable grows by 2%, but that's near to nothing. But there's a problem: one test position gives a different result. There must be a difference between 3.94 and 4.0 in some calculation or comparison. To find such a thing is a coder's nightmare...

[blueznl]

have you checked on this?

http://www.xs4all.nl/~bluez/datatalk/pu ... evaluation

if it's a calculation, start spreading the brackets...

[Fred]

Also note than as long you're not using the /THREAD switch (thread safe executable), all the libs/code generated is optimized for single threaded programs (like in 3.94).

[Thomas]

Thanks blueznl, you're guide is very useful. Found something, will post it in the bugs section since it's very weird.