LabVIEW

A simple exercise — how to obtain the CPU base frequency.

A simple exercise — how to obtain the CPU brand string using CPUID in Rust and pass it to LabVIEW.

When iterating diagonals of a 3D array, the performance differences between LabVIEW and Rust become very noticeable. Even with a straightforward implementation, the generated machine code tells a story about what’s happening under the hood.

Sometimes it’s necessary to inspect the machine code behind a LabVIEW-generated executable. Running such an application under a binary debugger is straightforward; locating the desired code is only slightly tricky.

From time to time, I need to fill images with random values — and do it quickly. There are two simple yet elegant algorithms to achieve this.

Second post about LabVIEW and Rust. This time we will pass native LabVIEW array into DLL written in Rust and resize inside.

For some reason, I need a fast method for string search. The LabVIEW Search/Split String function is relatively slow, I’ve done this using String Zilla, and achieved around a 20x boost with AVX2/AVX512.

I just encountered slow string performance in LabVIEW when a large string is passed to a DLL as a C string pointer. It is always better to pass it as ‘Adapt to Type’ instead of a pointer.

By default its limited, but can be manually increased in LabVIEW.ini

ParallelLoop.MaxNumLoopInstances=256

B&R PLC could be programmed with C++. State Machine is common used pattern. There are lot of examples of how to implement State Machines in C++. One of the example was taken and turned to B&R State Machine

In some cases we need to measure a very short intervals (hundreds of the CPU Tacts) directly in Assembler. We can perform measurement by using cpuid/rdtsc combination.

Collection of useful small Snippets

A very simple and basic TCP communication example for Python and LabVIEW

Many beginner users may be frustrated with .net and how it used in LabVIEW as well as why .NET Core and .NET Framework exists and what the differences. Since last LabVIEW 2024 supported both Core and Standard below is “demystification” with practical examples and some notes.

Interesting question was raised on NI Forum. “I have created an app that works without issue… As a DLL called by Python, 1 of the functions work… the other just freezes.”. The reason is — the Execution System was set “same as caller” (which is default), but Python is not LabVIEW.