OpenCl and the tools for it. Reviews and impressions. - page 3
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Mapping is mapping, it's just that a file object can be created directly in RAM.
I just don't understand why? Alexei clearly wrote that everything is in the init.
I repeat, I proposed it not for Alexey's problem, but as a way to speed up calculations in general)
That is, organizing a cache of sorts to use the data in subsequent iterations.
forget about this stripped-down DLL from it.
You have a fully functional version to work with mapping.
And how do you propose to do it - without referring to coding external to MQL4?
I already suggested - through files. But it's long and bothersome.
The set of parameters in memory will be associated with a certain result.
You can even make the mapping trickier, like this:
DateTime - {Calculation parameters} - Result[s].
This already caches calculations on every bar.
Fuck mapping and files. What we need is associative storage.
forget about this stripped-down DLL from it.
You have a fully functional version to work with mapping.
Asked how without a dll.
OK, never mind. It's easier to make heavy C/C++ computations and speed up execution by several times using SSE*, Open MP and IPP. And instead of 10 seconds on MQL4 you'll get 1 second - even on my budget dual-core.
I asked him how he could work without dll.
Okay, never mind. It's easier to implement heavy computations in C/C++ and speed up execution by several times using SSE*, Open MP and IPP. And instead of 10 seconds in MQL4 you'll get 1 second - even on my budget dual core.
MQL5 is 20 times faster than MQL4.
C++ is 6 times faster than MQL5 (when using libraries that automatically parallelize execution).
Total: 20*6=120 times.
If you use GPU calculations, it will be even faster.
TOTAL: 10/120=0.083c.
something like this.
MQL5 is 20 times faster than MQL4.
I would like to believe it. But in practice optimization in a multicore CPU in MT5 is much slower than single-threaded optimization in MT4.
It is quite possible that it only seems as if the code in MT5 is barely wiggling?
I should take some benchmark-algorithm and use it in the start() function of MT4 and OnTick() of MT5 and run it on a single core in Expert Advisors with one dummy input parameter changing from 0 to 9999 without genetics to make sure more exactly. But where to get this single core?
Except that in practice optimization on a multi-core CPU in MT5 is noticeably slower than single-threaded optimization in MT4.
No, this is a tester. Before the Championship we measured the run time - the run time of an economical light Expert Advisor was much less than the time spent for testing.
However this information is not 100%, I may lie, I do not remember.