> Once you have allowed that proprietary cr*p into your C++ codebase
People have been doing that all the time for every kind of codebase. It's just part of the business. I don't see how it's worth having any emotions or opinions about it. Seems like you are wasting your energy.
Are win32 APIs proprietary? So you decide to use them, use a wrapper/UI framework, or don't develop for Windows. Easy choice.
Developing for embedded devices? So you read the manufacturers manual and implement based on the spec, use some sort of HAL if they are available, or you don't have a job. Even simpler.
> I don't see how it's worth having any emotions or opinions about it.
Ironic, seeing as that is an opinion about it. Also weird telling people in an online discussion forum not to have opinions.
Oh, does that mean I get to say you're ironic because, literally, they didn't tell anyone to do anything. They said they didn't understand the worth of the opinion. You're interpretation is selectively literal in order to be rhetorical.
Does that mean someone else gets say I'm being ironic because I'm selectively literal in order to be rhetorical? Well, okay, I guess it's harder now.
Many software engineers forget they're employee of a business.
> Are win32 APIs proprietary?
Yes. And crap. Not in my code bases.
If you're going to make apps in windows, you need to call their proprietary API somehow. Maybe you do it via a wrapper library, or via electron or something. But that's the same thing, just with more indirection.
> If you're going to make apps in windows, you need to call their proprietary API somehow. Maybe you do it via a wrapper library, or via electron or something. But that's the same thing, just with more indirection.
Not even close to being true. You can invoke syscalls directly, just needs a bit of reverse engineering. I wrote a bare metal libc library, with (not a whole lot of) effort I'm fully able to interface with the kernel/open windows etc. Fully statically linked, no libc, no win32, compiled on Linux executed on Windows.
The problem is this isn't really well documented _at all_, and I even ended up attempting to get in touch with the Windows kernel dev team to give me the actual internal syscalls/endpoints, but they refuse to cooperate. Which is why writing anything for Windows is entirely pointless.
The problem is much deeper than that. Most OSes' syscall ABIs are not stable and could change without warning. What is stable is the dynamically-loaded libraries, shipped as part of the system. Linux is the notable exception here; the Linux kernel project doesn't ship a libc, and Linus is very famously opposed to "breaking userspace."
There's nothing that can stop you from using syscalls in theory, but if you want your app to be portable across different OS versions, past and future, you'd better not.
Incidentally, syscalls would also break Wine. The way Wine works is basically by shipping their own versions of Windows DLLs, which express their operations in terms of Linux APIs. Because Windows programs don't rely on syscalls, and call all system functions via the system-provided libraries, the Wine loader can just link Wine's version and let the program work normally.
Find a way to get ring 0 without touching any system APIs and you can just make your own APIs. My programs shall never say "please."
Your programs shall never grace my systems.
What makes you think he'll let you have a say in this? Btw, you wanna buy some ~~dea~~ usb sticks?
The CPU on most machines is quite proprietary. I don’t understand this faux purity dogma.
Practical computing is not and never has been an abstract pure concept. It’s about making machines built by corporations to do usefull things at scale.
There is no ”non proprietary” computing unless you make your own stack.
Yes but there are business costs to using high-level proprietary tools and libraries. If you write your app using win32, you won’t be able to port is very easily. You’re also stuck with whatever bad or bizarre decisions Microsoft made.
It’s even worse for CUDA. GPUs are expensive, and now you’re vendor locked. You’re between a rock and a hard place. Either spend millions in engineering time, or millions on price-gauged hardware.
” If you write your app using win32, you won’t be able to port is very easily.”
This is wrong way around.
If you don’t support the platform your app runs on using the native api:s to the hilt your port is just bad.
If you actually want to support multiple platforms _you actually need to support_ them from the ground up.
This is speaking industrially and businesswise. A professional software business always has per-platform implementation resources. Or they have just one platform. Or they pretend they are multiplatform and then _everybody_ _daily_ fights with the problems this causes.
Obviously those elements that can be portable should be. It’s like Einsteins simplicity maxim - your codebase should be as portable as can be but not more.
” It’s even worse for CUDA…”
No these are just the business and market constraints. If this does not make sense for your offering then don’t use it. This feels like false FOMO - CUDA is not a silver bullet but it might be a specific solution to a specific problem.
Win32 is the most stable abi on the Linux desktop.
Dead wrong. Win32 (externally) only seems stable, but internally it changes between Windows releases. Win7 syscalls are completely different from Win11 syscalls, meaning if I want to release a binary _without relying_ on Win32 I need to provide full syscall mappings _for each and every Windows version_. This doesn't happen on Linux.
>> Win32 is the most stable abi on the Linux desktop.
> Dead wrong [...] if I want to release a binary _without relying_ on Win32
Then you are not using the Win32 ABI, are you?
I wonder which APIs you would use to port easily, because POSIX and Khronos aren't it either, as they are industry standards driven by companies where one has to pay for a seat at Open Group and Khronos offices.
There is no ”easy” porting.
Once this is accepted the rest becomes easier as you are not wasting time trying to find a silver bullet.
I mean it’s then ”just normal work”.
Exactly.
> If you write your app using win32, you won’t be able to port is very easily.
Is this still true? eg, Shopify saying porting is now easy so no need for abstractions.
Porting has never been hard. Just follow the platform guidelines. Make sane architecture. Done.
I mean _it's just work_. You don't need to invent anything. Just do the work.
What _is_ hard is when people run after silver bullets to avoid all this work.
Because people who don't understand software decide it would be cheaper to implement something only once. Or someone who does not really understand what they are doing insists that same C++ code runs automatically on all platforms.
AI has given the software engineers permit from the beancounters to do the sane thing.
Good software development orgs _have always_ done proper per platform ports.
Also - there is nothing wrong in supporting only one platform as such!
> Good software development orgs _have always_ done proper per platform ports.
I really wonder why this was never fundamentally fixed. How performant a certain instruction on a specific platform is, how well it is supported and potential equivalents or sets of other instructions to emulate an equivalent are usually all very well understood.
So there should be some graph of operations which can transform any software from and to the specifics of each platform. Especially because firmware + compliers + platform abstracting libraries are basically already just that graph, although (usually?) to lossy to be applied in reverse. Add the recent developments in very large scale statistics to it and it'd probably be quite possible to transform from and to generic intent in the implementation to the uniqueness of each platform. E.g. the theming differences between a MacOS UI and a terminal application served over serial or the processing capabilities of a VLIW CPU compared to a FPGA or a GPU server.
Considering the enormous amount of work that went into compilers, better debugging and intermediate representations it seems like a huge missed opportunity nobody seriously asked the question whether information could be emitted that would allow for decompiling all the way back to the generic intent.
CUDA is not an API, CUDA is a language, so you cannot make that comparison.
CUDA is neither an API, nor a language, it is an ecosystem.
That's a nice way of saying that it's a dependency clusterfuck.
I've never understood why we can't just expose the GPU ISA directly the way the CPU does. It's all getting compiled down at the end of the day so someone has to write a compiler for it either way. We'd be substantially better off IMO if it was all built directly into LLVM and then let middleware sort out the details.
Because even CPUs rather use JIT runtimes to deal with the various kinds of ISAs that exist.
Naturally plenty of folks rather use software that doesn't take advantage of the hardware they paid for.
If i'm not mistaken, this already exists, and the assembly language here is called PTX
https://llvm.org/docs/NVPTXUsage.html
PTX is a bytecode format, the CUDA driver JIT compiles it when uploading into the cards.
That would require vendors to either stick with a single backwards compatible ISA like intel did for x86 or document how their graphics cards work.
CPUs manage this by changing the internal micro-architecture, but historically GPUs only needed to support a graphics API and used that abstraction layer to freely change the hardware.
> The CUDA runtime is a special case of one of the libraries provided by the CUDA Toolkit. The CUDA runtime provides both an API and some language extensions to handle common tasks such as allocating memory, copying data between GPUs and other GPUs or CPUs, and launching kernels. The API components of the CUDA runtime are referred to as the CUDA runtime API.
From: https://docs.nvidia.com/cuda/cuda-programming-guide/01-intro...