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
Interesting. TJ used to claim that the 64 bit version was 25% faster. He has
since changed that claim to 'a bit' faster. Why the change...?
--- In amibroker@yahoogroups.com, dubi1974 gonzale...@... wrote:
Hi,
I tested it and compared an normal optimization process between 32bit and 64
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
Thanks TJ. Now I understand.
Are we far off a 64-bit IQ Feed plug-in...?
--- In amibroker@yahoogroups.com, Tomasz Janeczko gro...@... wrote:
Hello,
25% speedup is in processing large arrays with lots of floating point
calculations. It also depends on CPU used. On some CPUs 64-bit
Hello,
No, not far :-)
Best regards,
Tomasz Janeczko
amibroker.com
On 2010-07-08 11:05, Rob wrote:
Thanks TJ. Now I understand.
Are we far off a 64-bit IQ Feed plug-in...?
--- In amibroker@yahoogroups.com, Tomasz Janeczkogro...@... wrote:
Hello,
25% speedup is in processing large
Mike -
Minor correction and maybe more than you are interested in, but SPSO appears to
initialize its random number generator with a fixed seed on each optimization,
so the search sequence is the same - so, SPSO runs are reproducible.
This is actually useful in certain cases. I found that I
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
Bruce,
Thanks for the info. I haven't got around to dissecting that optimizer yet.
And, yes, I completely agree that a fixed seed option would be very useful.
Mike
--- In amibroker@yahoogroups.com, Bruce bru...@... wrote:
Mike -
Minor correction and maybe more than you are interested in,
Dubi,
According to Tomasz, CMAE is available in 64 bit.
http://finance.groups.yahoo.com/group/amibroker/message/150820
Mike
--- In amibroker@yahoogroups.com, dubi1974 gonzale...@... wrote:
Hi Mike,
Same machine, same optimization.
I am using Windows 7x64bit. CPU is Intel i7 920. 6GB
Hello,
Exhaustive (i.e. full grid) optimization is the one that is default and
built-in in AmiBroker, does not require any plugin.
Only NON-exhaustive methods require any plugins.
Regarding non-exhaustive optimization, 64-bit version already has it - CMAE.
Best regards,
Tomasz Janeczko
Sorry... you are right, in the hurry, I confused up.
I did use the exhaustive for the 32bit and the 64bit and not the
NON-exhaustive. So the results are comparable.
Regards, dubi
--- In amibroker@yahoogroups.com, Tomasz Janeczko gro...@... wrote:
Hello,
Exhaustive (i.e. full grid)
Hello Mr. Tomasz Janeczko,
Please guide if an AmiBroker Database ASCII Import created in 32bit can be used
in 64Bit or vice-versa? Can the same database be used sometime in 64bit and
sometime in 32bit(not at the same time)? I mean I hope opening database in
64bit does not render the database
Tomasz,
Thank you for letting us try this. I am just a bit confused when I open the
compatibility page: it is indicated that Amibroker 64 bits is NOT compatible
with InteractiveBrokers data source; shouldn'it say yes as you wrote below
that it comes with IB plugin ??
Also, what about
Hello,
The compatibility page has been updated and shows current status quo:
http://www.amibroker.com/guide/compat.html
Best regards,
Tomasz Janeczko
amibroker.com
On 2010-05-31 15:56, cvanhaesendonck wrote:
Tomasz,
Thank you for letting us try this. I am just a bit confused when I open the
TJ,
As well as utilising more memory, 64 bit AB is about 25% faster too... is that
correct..?
Will that also be true running live off a real time data feed such as IQ
Feed...?
Many Thanks
R
--- In amibroker@yahoogroups.com, Tomasz Janeczko gro...@... wrote:
Hello,
Yes, generally
Hello,
As written here: http://www.amibroker.com/x64/ it is a bit faster.
The difference in practice is hardly noticeable.
What can be 25% faster? Only certain array operations that use SIMD /
SSE extensions on 64-bit
version and only normal FPU on 32-bit version.
That does not however translate
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