New article How to Install and Use OpenCL for Calculations is published:
It has been over a year since MQL5 started providing native support for OpenCL. However not many users have seen the true value of using parallel computing in their Expert Advisors, indicators or scripts. This article serves to help you install and set up OpenCL on your computer so that you can try to use this technology in the MetaTrader 5 trading terminal.
OpenCL is the open standard for parallel programming developed by the Khronos Group consortium in 2008. This standard allows you to develop applications that could be run in parallel on GPUs or CPUs with different architecture in a heterogeneous system.
In other words, OpenCL makes it possible to utilize all CPU cores or
GPU's enormous computing capacity when calculating a task, thus reducing
program execution time. Use of OpenCL is therefore very beneficial when
dealing with tasks associated with laborious and resource consuming
For example, speaking of MQL5, performance gain can be very rewarding
when handling a certain script (indicator or Expert Advisor) that
performs a complex and lengthy analysis of historical data by several
symbols and time frames (it should be noted here that a MQL5
program that is intended to employ parallel execution should be written
in a special way using OpenCL API).
Could anyone attach the OpenCL 1.1 drivers for Nvidia?
It seems the Nvidia has removed the OpenCL support for version 1.1
Only version 1.0, If anyone had the file of version 1.1, please attach the file to this discussion.
I do not think that is correct.
I have an Nvidia 8600m GT card which prior to the MT5 upgrade to build 803 worked with MT5 for OpenCL. After the 803 build in April MT5 reported that it could not find OpenCL and if I use the pre-803 build it still works.
I made sure that I had the latest Nvidia drivers but that made no difference. I logged a call with the metaquotes service desk and they stated that MT5 no longer supports version 1.0 OpenCL.
Personally I find that difficult to understand these things are nearly always backward compatible and I cannot find anything about version 1.0 not being so. But in fairness Nvidia do not state what versions the cards support, they just say that if it is cuda enabled then it works and the 8600m GT is so.
Reality is that it no longer works for whatever reason and that is down to MT5 as it was working before the 803 build, it maybe how they have implemented it or a backward compatibility issue I will probably never know.
Which version of OpenCL driver do you have?
how to tell?
I am using the latest Nvidia drivers GeForce 320.18
In the directory Nvidia\OpenCL there is OpenCL.dll & OpenCL64.dll both are version 220.127.116.11 from Khronos
So, How does the MT5 detect your openCL driver when they are version 1.0, and with my MT5, it doesn't accept OpenCL drivers 1.0?