Hi Mike, Same machine, same optimization. I am using Windows 7x64bit. CPU is Intel i7 920. 6GB DDRAM3. And I compared the same optimization of a formula on Amibroker 32bit and Amibroker 64bit.
Regarding exhaustive optimizer. There is not exhaustive optimizer for 64bit. That's why I did neither use it for the 32bit and the 64bit. That's why I asked Tomasz if a exhaustive optimizer 64bit plugin is planed. Regards, dubi --- In amibroker@yahoogroups.com, "Mike" <sfclimb...@...> wrote: > > Did you perform your test using an exhaustive optimization on identical > machines (or better yet, the same machine), differing only by 32 bit windows > vs. 64 bit windows? If not, your test is comparing apples to oranges. > > 1. If using different machines, the hardware will play a very large role in > the performance. My high end 64bit server takes 20 seconds to compute what my > low end 32bit laptop does in 8 minutes. I can assure you it has very little > to do with the operating system! > > 2. If using a non exhaustive optimizer, the built-in randomness of the > optimizer can result in a different number of actual backtest operations. An > optimization will take some period of time to converge. Immediately running > the same optimization again on the same machine may converge sooner or take > longer. The timing is not fixed, as it would be for an exhaustive > optimization that will always perform exactly the same number of backtests. > > Mike > > --- In amibroker@yahoogroups.com, "dubi1974" <gonzales74@> wrote: > > > > Hi, > > > > I tested it and compared an normal optimization process between 32bit and > > 64 bit. On the same formula Amibroker 32-bit took more than 8 hours for the > > optimization process, and Amibroker 64-bit just 4h:50min. > > > > So my experience shows me, that it's much faster. My question is, could you > > Tomasz provide us the optimizer.dll in 64-bit? Like cmae or tribes? For > > testing purpose. > > > > Many thanks. > > > > Regards, dubi > > > > --- In amibroker@yahoogroups.com, Tomasz Janeczko <groups@> wrote: > > > > > > Hello, > > > > > > AmiBroker 5.30.1 64-bit edition (experimental) is now available for > > > download from: > > > http://www.amibroker.com/x64/ > > > > > > This is experimental version *only* for people running 64-bit Windows > > > and wanting to utilise *more* than 4GB of memory. 64-bit version does > > > NOT offer anything more, just ability to access more memory. It can > > > (and should) be installed into *separate* folder, so it does not > > > overwrite 32-bit edition (if installed). This version includes only 2 > > > plugins: CMAE and IB (interactive brokers) plugin. 64-bit version of > > > IQFeed plugin is in the works > > > and it will arrive later. > > > > > > Note that regular users, even running 64-bit Windows should rather run > > > regular, 32-bit version of AmiBroker as it offers more compatibility and > > > was tested on way more installations. > > > > > > Please note that 64-bit version has BETA/experimental status and in case > > > of problems you should use 32-bit version instead. > > > > > > Best regards, > > > Tomasz Janeczko > > > amibroker.com > > > > > >
