Originally posted by commodore256
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Mesa Considers Raising CPU Support Baseline
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Last edited by Azrael5; 30 March 2021, 10:12 AM.
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Originally posted by commodore256 View PostI feel Linux should run on hardware older than 20 years because patents last 20 years. You think technology moves fast? Imagine how much faster it would move if patents didn't exist. If I could support a contemporary hardware vendor that only uses patent expired technology, I would, but my performance baseline for general computing is like a workstation from 2013 with support for h265.
So 16 years of patents left to go with the h265 codecs, but by then h268 will be out and would probably revolutionize everything again and increasing the baseline.
Technology only moves fast enough for expired patents to be almost worthless.
but i think you are wrong about h265 believe it or not soon anyone will use VP9/AV1
this means a patent free hardware company could implement a VP9/AV1 decoder and you are fine.
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Incredible that it's people with their 20yo config that lead the defaults in software.
Default should be based on average 5yo hardware and we should keep this offset.
Linux should drop 32bit build support because it's ridiculous, and support for cpu that are 20+yo should be removed.
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Originally posted by angrypie View Post
Nobody but rabid Intel fanboys would recommend this for a custom build. The majority of those CPUs will go to OEMs.
For fuck's sake, an Excavator CPU from 2016 has AVX2. Let's hope Alder Lake Pentiums aren't that useless (lulz).
That's why I support v# repos and not hardline cutoffs...granted, in this case the hard cutoff is v1 so no one 64-bit will be effected by this.
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Originally posted by Pentarctagon View PostSo... what difference does Mesa's defaults make?
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If you're compiling Mesa yourself, then you can set the flags to whatever you want so you don't care.
If you're not compiling Mesa yourself, then the distro you're using is setting their own flags on all the software they distribute themselves. The distro's supported CPU choice is what matters.
So... what difference does Mesa's defaults make?
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Originally posted by Raka555 View PostIf people played around with the compiler optimizations like -march=native , they will know that it does not make a spectacular difference.
In reality newer machines were not held back that much.
Big gains can be made by rewriting certain functions in inline assembly using newer instructions.
And yes there is usually an even greater improvement with hand-tweaked assembly coding (or compiler intrinsics). In some cases the vectorized inner loop can reach the RAM bandwidth limit of the CPU. In that case the only performance improvements come from moving the code to a Xeon.
Seriously, there's a reason that running AVX2 code results in so much CPU heating. Because it is getting a LOT OF WORK DONE. It's worth it and the same is true of lower levels like MMX, SSE, SSE2, etc.
Besides vectorization, compiler optimizations add up. If you have a 5% boost from one thing and a 10% boost from another before you know it the software is running 30% faster.
Obviously, more modern CPU instructions work better than old ones. Otherwise we'd still be running 8 bit and 16 bit code and doing floating point using integer math just like the 1980s. Will anyone argue that recompiling 1980s 8086 code with -march=native is a waste of time and that it's not a "spectacular difference?" The changes do add up.
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Originally posted by skeevy420 View Post
That's obsolete by design and shouldn't even exist. Shame on Intel.
I feel for all the people buying them for budget rigs not knowing any better.
For fuck's sake, an Excavator CPU from 2016 has AVX2. Let's hope Alder Lake Pentiums aren't that useless (lulz).
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Originally posted by hotaru View Posta CPU that just launched this month is old hardware?
I feel for all the people buying them for budget rigs not knowing any better.
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Originally posted by skeevy420 View PostPersonally, I think anything before AVX is old hardware.
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