What are the Greenest or Least Environmentally Friendly Programming Languages?

What are the Greenest or Least Environmentally Programming Languages?

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What are the Greenest or Least Environmentally Friendly Programming Languages?

Technology has revolutionized the way we live, work, and play. It has also had a profound impact on the world of programming languages. In recent years, there has been a growing trend towards green, energy-efficient languages such as C and C++.  C++ and Rust are two of the most popular languages in this category. Both are designed to be more efficient than traditional languages like Java and JavaScript. And both have been shown to be highly effective at reducing greenhouse gas emissions. So if you’re looking for a language that’s good for the environment, these two are definitely worth considering.

The study below runs 10 benchmark problems in 28 languages [1]. It measures the runtime, memory usage, and energy consumption of each language. The abstract of the paper is shown below.

“This paper presents a study of the runtime, memory usage and energy consumption of twenty seven well-known software languages. We monitor the performance of such languages using ten different programming problems, expressed in each of the languages. Our results show interesting findings, such as, slower/faster languages consuming less/more energy, and how memory usage influences energy consumption. We show how to use our results to provide software engineers support to decide which language to use when energy efficiency is a concern”. [2]

According to the “paper,” in this study, they monitored the performance of these languages using different programming problems for which they used different algorithms compiled by the “Computer Language Benchmarks Game” project, dedicated to implementing algorithms in different languages.

The team used Intel’s Running Average Power Limit (RAPL) tool to measure power consumption, which can provide very accurate power consumption estimates.

The research shows that several factors influence energy consumption, as expected. The speed at which they are executed in the energy consumption is usually decisive, but not always the one that runs the fastest is the one that consumes the least energy as other factors enter into the power consumption equation besides speed, as the memory usage.

Energy

From this table, it is worth noting that C, C++and Java are among the languages that consume the least energy. On the other hand, JavaScript consumes almost twice as much as Java and four times what C consumes. As an interpreted language, Python needs more time to execute and is, therefore, one of the least “green” languages, occupying the position of those that consume the most energy.

Time:

The results are similar to the energy expenditure; the faster a programming language is, the less energy it expends.

Memory

In terms of memory consumption, we see how Java has become one of the most memory-consuming languages along with JavaScript.

Memory ranking.

Ranking

In this ranking, we can see the “greenest” and most efficient languages are: C, C+, Rust, and Java, although this last one shoots the memory usage.

From the Paper: Normalized global results for Energy, Time, and Memory.

To conclude: 

Most Environmentally Friendly Languages: C, Rust, and C++
Least Environmentally Friendly Languages: Ruby, Python, Perl

Although this study may seem curious and without much practical application, it may help design better and more efficient programming languages. Also, we can use this new parameter in our equation when choosing a programing language.

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This parameter can no longer be ignored in the future or almost the present; besides, the fastest languages are generally also the most environmentally friendly.

If you’re interested in something that is both green and energy efficient, you might want to consider the Groeningen Programming Language (GPL). Developed by a team of researchers at the University of Groningen in the Netherlands, GPL is a relatively new language that is based on the C and C++ programming languages. Python and Rust are also used in its development. GPL is designed to be used for developing energy efficient applications. Its syntax is similar to other popular programming languages, so it should be relatively easy for experienced programmers to learn. And since it’s open source, you can download and use it for free. So why not give GPL a try? It just might be the perfect language for your next project.

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Top 10 Caveats – Counter arguments:

#1 C++ will perform better than Python to solve some simple algorithmic problems. C++ is a fairly bare-bone language with a medium level of abstraction, while Python is a high-level languages that relies on many external components, some of which have actually been written in C++. And of course C++ will be efficient than C# to solve some basic problem. But let’s see what happens if you build a complete web application back-end in C++.

#2: This isn’t much useful. I can imagine that the fastest (performance-wise) programming languages are greenest, and vice versa. However, running time is not only the factor here. An engineer may spend 5 minutes writing a Python script that does the job pretty well, and spends hours on debugging C++ code that does the same thing. And the performance difference on the final code may not differ much!

#3:  Has anyone actually taken a look at the winning C and Rust solutions? Most of them are hand-written assembly code masked as SSE intrinsic. That is the kind of code that only a handful of people are able to maintain, not to mention come up with. On the other hand, the Python solutions are pure Python code without a trace of accelerated (read: written in Fortran, C, C++, and/or Rust) libraries like NumPy used in all sane Python projects.

#4:  I used C++ years ago and now use Python, for saving energy consumption, I turn off my laptop when I got off work, I don’t use extra monitors, my AC is always set to 28 Celsius degree, I plan to change my car to electrical one, and I use Python.

#5: I disagree. We should consider the energy saved by the products created in those languages. For example, a C# – based Microsoft Teams allows people to work remotely. How much CO2 do we save that way? 😉

Now, try to do the same in C.

#6 Also, some Python programs, such as anything using NumPy, spend a considerable fraction of their cycles outside the Python interpreter in a C or C++ library..

I would love to see a scatterplot of execution time vs. energy usage as well. Given that modern CPUs can turbo and then go to a low-power state, a modest increase of energy usage during execution can pay dividends in letting the processor go to sleep quicker.

An application that vectorized heavily may end up having very high peak power and moderately higher energy usage that’s repaid by going to sleep much sooner. In the cell phone application processor business, we called that “race to sleep.” By Joe Zbiciak

#7  By Tim Mensch : It’s almost complete garbage.

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If you look at the TypeScript numbers, they are more than 5x worse than JavaScript.

This has to mean they were running the TypeScript compiler every time they ran their benchmark. That’s not how TypeScript works. TypeScript should be identical to JavaScript. It is JavaScript once it’s running, after all.

Given that glaring mistake, the rest of their numbers are suspect.

I suspect Python and Ruby really are pretty bad given better written benchmarks I’ve seen, but given their testing issues, not as bad as they imply. Python at least has a “compile” phase as well, so if they were running a benchmark repeatedly, they were measuring the startup energy usage along with the actual energy usage, which may have swamped the benchmark itself.

PHP similarly has a compile step, but PHP may actually run that compile step every time a script is run. So of all of the benchmarks, it might be the closest.


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I do wonder if they also compiled the C and C++ code as part of the benchmarks as well. C++ should be as optimized or more so than C, and as such should use the same or less power, unless you’re counting the compile phase. And if they’re also measuring the compile phase, then they are being intentionally deceptive. Or stupid. But I’ll go with deceptive to be polite. (You usually compile a program in C or C++ once and then you can run it millions or billions of times—or more. The energy cost of compiling is miniscule compared to the run time cost of almost any program.)

I’ve read that 80% of all studies are garbage. This is one of those garbage studies.

#8 By Chaim Solomon: This is nonsense

This is nonsense as it runs low-level benchmarks that benchmark basic algorithms in high-level languages. You don’t do that for anything more than theoretical work.

Do a comparison of real-world tasks and you should find less of a spread.

Do a comparison of web-server work or something like that – I guess you may find a factor of maybe 5 or 10 – if it’s done right.

Don’t do low-level algorithms in a high-level language for anything more than teaching. If you need such an algorithm – the way to do it is to implement it in a library as a native module. And then it’s compiled to machine code and runs as fast as any other implementation.

#9 By Tim Mensch

It’s worse than nonsense. TypeScript complies directly to JavaScript, but gets a crazy worse rating somehow?!

#10 By Tim Mensch

For NumPy and machine learning applications, most of the calculations are going to be in C.

The world I’ve found myself in is server code, though. Servers that run 24/7/365.

And in that case, a server written in C or C++ will be able to saturate its network interface at a much lower continuous CPU load than a Python or Ruby server can. So in that respect, the latter languages’ performance issues really do make a difference in ongoing energy usage.

But as you point out, in mobile there could be an even greater difference due to the CPU being put to sleep or into a low power mode if it finishes its work more quickly.

 

What is the single most influential book every Programmers should read

Top Programming Books

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There are a lot of books that can be influential to programmers. But, what is the one book that every programmer should read? This is a question that has been asked by many, and it is still up for debate. However, there are some great contenders for this title. In this blog post, we will discuss three possible books that could be called the most influential book for programmers. So, what are you waiting for? Keep reading to find out more!

Source: Wikipedia

Ok…I think this is one of the most important questions to answer. According to the my personal experience as a Programmer, I would say you must learn following 5 universal core concepts of programming to become a successful Java programmer.

(1) Mastering the fundamentals of Java programming Language – This is the most important skill that you must learn to become successful java programmer. You must master the fundamentals of the language, specially the areas like OOP, Collections, Generics, Concurrency, I/O, Stings, Exception handling, Inner Classes and JVM architecture.

Recommended readings are OCA Java SE 8 Programmer by by Kathy Sierra and Bert Bates (First read Head First Java if you are a new comer ) and Effective Java by Joshua Bloch.

(2) Data Structures and Algorithms – Programming languages are basically just a tool to solve problems. Problems generally has data to process on to make some decisions and we have to build a procedure to solve that specific problem domain. In any real life complexity of the problem domain and the data we have to handle would be very large. That’s why it is essential to knowing basic data structures like Arrays, Linked Lists, Stacks, Queues, Trees, Heap, Dictionaries ,Hash Tables and Graphs and also basic algorithms like Searching, Sorting, Hashing, Graph algorithms, Greedy algorithms and Dynamic Programming.

Recommended readings are Data Structures & Algorithms in Java by Robert Lafore (Beginner) , Algorithms Robert Sedgewick (intermediate) and Introduction to Algorithms-MIT press by CLRS (Advanced).

(3) Design Patterns – Design patterns are general reusable solution to a commonly occurring problem within a given context in software design and they are absolutely crucial as hard core Java Programmer. If you don’t use design patterns you will write much more code, it will be buggy and hard to understand and refactor, not to mention untestable and they are really great way for communicating your intent very quickly with other programmers.

Recommended readings are Head First Design Patterns Elisabeth Freeman and Kathy Sierra and Design Patterns: Elements of Reusable by Gang of four.

(4) Programming Best Practices – Programming is not only about learning and writing code. Code readability is a universal subject in the world of computer programming. It helps standardize products and help reduce future maintenance cost. Best practices helps you, as a programmer to think differently and improves problem solving attitude within you. A simple program can be written in many ways if given to multiple developers. Thus the need to best practices come into picture and every programmer must aware about these things.

Recommended readings are Clean Code by Robert Cecil Martin and Code Complete by Steve McConnell.

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(5) Testing and Debugging (T&D) – As you know about the writing the code for specific problem domain, you have to learn how to test that code snippet and debug it when it is needed. Some programmers skip their unit testing or other testing methodology part and leave it to QA guys. That will lead to delivering 80% bugs hiding in your code to the QA team and reduce the productivity and risking and pushing your project boundaries to failure. When a miss behavior or bug occurred within your code when the testing phase. It is essential to know about the debugging techniques to identify that bug and its root cause.

Recommended readings are Debugging by David Agans and A Friendly Introduction to Software Testing by Bill Laboon.

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I hope these instructions will help you to become a successful Java Programmer. Here i am explain only the universal core concepts that you must learn as successful programmer. I am not mentioning any technologies that Java programmer must know such as Spring, Hibernate, Micro-Servicers and Build tools, because that can be change according to the problem domain or environment that you are currently working on…..Happy Coding!

Summary: There’s no doubt that books have had a profound influence on society and the advancement of human knowledge. But which book is the most influential for programmers? Some might say it’s The Art of Computer Programming, or The Pragmatic Programmer. But I would argue that the most influential book for programmers is CODE: The Hidden Language of Computer Hardware and Software. In CODE, author Charles Petzold takes you on a journey from the basics of computer hardware to the intricate workings of software. Along the way, you learn how to write code in Assembly language, and gain an understanding of how computers work at a fundamental level. If you’re serious about becoming a programmer, then CODE should be at the top of your reading list!

Programming Languages used for Autopilot in Self Driving Cars like Tesla, Audi, BMW, Mercedes Benz, Volvo, Infiniti

Self Driving Cars Programming language - Misra C

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Most self-driving cars on the market today use C programming language for their vehicle software. This is because C is a very robust and stable language that can be trusted for mission-critical applications. In addition, C is relatively easy to learn and has a wide range of features that make it well suited for automotive applications. However, there are some drawbacks to using C for self-driving cars. First, it is not a very concise language, so the code can be quite long and difficult to read. Second, C does not have built-in support for object-oriented programming, which is becoming increasingly important in the world of autonomous vehicles. As a result, many carmakers are starting to explore other languages for their autopilot systems, such as Java and Python.

Below are Top Cars with AutoPilot features for 2022:

  • Tesla (Model 3, Y, S & X)
  • GM – (Cadillac CT6, Cadillac Escalade, Chevy Bolt, Hummer EV)
  • Audi (A6, A8)
  • BMW (X5, 3 Series )
  • Ford / Lincoln (Mustang Mach-E, Ford F-150)
  • Kia / Hyundai (Telluride, Palisade, Sonata)
  • Mercedes Benz (E-Class, S-Class)
  • Volvo (XC90, XC60, XC40)
  • Nissan (Rogue, Leaf, etc.)
  • Infiniti (QX50)

Whilst it’s technically correct that Tesla most likely uses the C programming language for their vehicle software, it’s worth clarifying that the actual language would be MISRA C which has several constraints on the language to provide better control over its features .

Low-level communication requires using C. Especially for embedded systems, sensors and IoT software.

To develop software for supporting devices in the system C++ is the best option.

However, Python is the language to enter the game when it comes to using AI.

WHY DOES ELON HATE LIDAR?

There are a few reasons for that:

  1. Lidar uses light to measure distances. But we know you can measure distances using a “stereo pair” of regular cameras with (by 2020 standards) very simple software processing.
  2. Lidar requires mechanical scanning of the scene – implying moving parts that will make it less reliable.
  3. Lidar sensors are quite costly compared to cameras. A digital camera costs less than $1 in quantity. Lidar units are in the hundred to several hundred dollar range.
  4. Radar and ultrasound both do a lot of what Lidar does – they are cheaper, and because they’re operating outside of the spectrum of visible light, they can see things that cameras and Lidar can’t – so they add more value than Lidar.
  5. Lidar does have a few odd “artifacts” – some objects don’t reflect light very well – very shiny objects reflect it only in a narrow direction that doesn’t return the light to the Lidar sensor. Processing to eliminate these artifacts is comparable in complexity to the stereo-camera solution.
  6. Lidar can’t REPLACE cameras – so you still need them for image recognition. For example, you can’t read the wording on a road sign using Lidar.

Activities – MISRA C

  • Waymo (previously Google) are using much more clever sophistication – and having a wider variety of sensors helps them. But with only a small number of actual cars collecting driving data – training an AI is tough. They’ve only driven about 20 million miles with their test cars.
  • Tesla are using brute force AI. They’ve invested in a massively powerful AI computer in each car (two of them, actually) – and a billion dollar data center for processing AI learning. With a million cars collecting data for them, they can collect a BILLION miles of training data every month.

With the Tesla approach, less is more.

With the Waymo approach, sophistication is king – and the more data you can get from your sensors, the less processing you have to do.

Reference

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Programming languages are used for Autopilot in Self Driving Cars. These cars have software that uses the C programming language. The MISRA C standard is important for the quality of this software. There are some core features of Autopilot, such as adaptive cruise control, lane centering, and autonomous parking. Some cars also have other advanced features that add to the convenience of the driver. Drivers can get these features by either buying a car with them included or by installing aftermarket Autopilot systems. Programming languages are also used for other purposes in these cars. For example, some companies use different languages to develop their infotainment systems or autonomous driving systems. Additionally, some companies have open-source projects for their vehicle software where they allow anyone to contribute code. Programming languages are thus an integral part of self-driving cars.

To conclude:

Programming languages are used to give instructions to a computer. High-level programming languages are easier for humans to read and write than low-level languages, which are closer to machine code. Programming languages can be compiled or interpreted. A Compiled language is converted into machine code that the computer can understand before the program is run. An interpreted language is read by a software program called an interpreter, which then converts it into machine code that the computer can understand. Some programming languages are more suited to certain tasks than others. For example, FORTRAN is often used for scientific or engineering applications because its syntax is designed to produce code that is easy to read and understand. Finding the right programming language can be a challenging task for any programmer. When it comes to writing software for self-driving cars, there are a few important factors to consider. First, the language must be able to handle the large amounts of data that self-driving cars generate. Second, it must be able to handle the real-time processing requirements of autonomous vehicles. And third, it must be able to meet the safety requirements of the automotive industry.

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Related:

I doubt it could operate well in the complete absence of light, but that situation can not arise. And it works extremely well in at least one very difficult seeing situation. Let me relate my experience.

On our recent road trip from San Diego to Clinton, Iowa, it was near dark as we reached the city limits of Clinton. Just as we did it started to rain heavily. A few seconds later the sky opened up and the heavy rain became what we call in Iowa, a Gully Washer. I was using Navigate on Autopilot, driving on the main road which led to the side street where our hotel destination was situated. I could see through the windshield by watching a 2 inch wide strip of cleared glass created as the windshield wiper passed back and forth. Other cars kept going and as I couldn’t see the road, I followed the car ahead of me. (Autopilot made that much easier than trying to stop as it even kept within the lane pretty much.) I could not see but I guess the cameras on the bumper below the headlights could see well enough. When the navigator told me to turn left in 200 feet, I couldn’t do that because I couldn’t see at all out the side window or the corner of the windshield. That is, nothing but flowing water, so I continued, to which Autopilot directed me to make a U-turn. On returning to the intersection of my turn, I caught a glimpse of a street sign and so, moving very slowly, turned around the sign. Water was flowing at least 6″ deep across the intersection but after a 50 or 100 feet, the crown of the road emerged and I realized that the rain was letting up.

We made it to the hotel parking lot which was full, shoes soaked getting into the door, and after checking in, waited the storm out which didn’t take long.

The point of this whole story is that the Tesla Autopilot will never have the opportunity to operate in the dark. The headlights provide enough light for the autopilot which can (in this case) see much better than a human driver. And if the battery is down to where the lights go out, I doubt the car will drive very far anyway.

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Autopilot-like functions are becoming more and more mainstream as technology improves. By late 2022, most car manufacturers will be offering some sort of more advanced self-driving capabilities.

What’s Important to Know When Evaluating

When evaluating autopilot-like self driving systems, the main thing to look out for is Adaptive Cruise Control (ACC) and whether it handles starting and stopping at all speeds and on what kinds of roads. Then learn how well the vehicle can identify roads and stay in the center of the lane, called Lane Centering. Most manufacturers tout “Lane Keeping Assist” (LKA) as a way to help automate steering, but that’s different from Lane Centering and often a far cry from something like Tesla’s Autopilot system or Cadillac’s Super Cruise that are able to stay steadily centered in the lanes while driving.

If you’re not sure, check out videos on YouTube – enthusiasts and professionals often test out the systems to provide their opinions and real-world examples.

Also, ask the dealer how the system can be updated since technology and software changes so quickly. In Tesla’s case, the Autopilot system is continually updated over-the-air with software updates. Most other auto manufacturers require the updates to occur at the dealer during regular service updates.

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Is it good useful meaningful worthwhile to use register variables in C++?

What are the Greenest or Least Environmentally Programming Languages?

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The register keyword has been largely ignored by compilers for decades. In C, it prevents you from taking the address of a variable. But otherwise, most compilers ignore the hint it offers.

STANDARD C++ does not support register variables in 2022. In C register variables serve as a hint to the compiler to use a register rather than a memory address. Prior to C++17, it could also be used as a hint to the compiler in C++ as well, but only some conforming compilers did anything as a result. Starting in C++17, register has become an unused but reserved keyword.

Some compilers still permit it and some may even honor the request. Your programs, however, will not be cross-platform or written in true, standards-compliant C++ if you use the register keyword.

NOTE:

The situation in C (as opposed to C++) is quite different.

“Is it good?”

Usually the answer to that question is that it’s the wrong question, and that you should instead ask “Is it useful/meaningful/worthwhile…?” For example, if you had asked about using the register keyword in C, I would say “There’s nothing wrong about it. It won’t harm your program. It’s just a waste of time.”

It turns out C++ deprecated the register keyword in C++11, and removed it in C++17. As of C++17, the keyword register is now a reserved word with no meaning.

So, the answer to “is it good?” is “No.” Your program will fail to compile as a C++17 program.

By the end of 90s, register was the “R-type” decal of the C programming world. It did about as much for the speed of your program as the decal did for your car. (Possible exception for weak compilers on some embedded platforms.)

In any case, it doesn’t make sense to have a register qualifier on a parameter in a function prototype. It is ignored on any function declaration that is not a definition, similar to top level const.

That is, all four of these are equivalent:

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  • void foo(int x);
  • void foo(const int x);
  • void foo(register int x);
  • void foo(register const int x);

Now, both of those are meaningful in a definition. The register keyword stops you from taking an address (in C, but not C++), and const stops you from mutating the variable.

  • void foo(register const int x) {
  • const int *px = &x; // ERROR
  • x = 42; // ERROR
  • }

So, in principle you should be able to delete the unnecessary and useless register keywords from.the prototypes in the header without affecting any aspect of the program’s speed or correctness.

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As of C++17 the use of the register qualifier has been removed. It’s now an unused reserved word.

Old? It is outright obsolete and even if you’re coding on an older version you’re advised to not use it for forward compatibility.

It was a hint to the compiler that a variable would be frequently accessed and the the compiler should prefer to use a CPU register to hold it. The downside being you can’t take the address of a register.

In days of yore (pre-millennium) on now arcane and primitive architectures significant improvements could be had from making (typically) the control variable of a for-loop as a register.

I’m sure that’s still true of some embedded platforms. But modern CPUs have multiple tiers of memory cache and the overhead of loading from and storing variables to main memory is less significant.

We no longer really live with the simplistic Von Neumann of CPU and Main Memory with nothing in between.

Also, optimizers have vastly improved and will tend to make good choices for storage on their own.

It was removed from the standard not because its use was doing harm but that it was regarded as having little practical value and the keyword may be useful in the future.

Reference: here

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