Stubsack: weekly thread for sneers not worth an entire post, week ending 18th May 2025 - awful.systems
awful.systems
Need to let loose a primal scream without collecting footnotes first? Have a sneer percolating in your system but not enough time/energy to make a whole post about it? Go forth and be mid: Welcome to the Stubsack, your first port of call for learning fresh Awful youā€™ll near-instantly regret. Any awful.systems sub may be subsneered in this subthread, techtakes or no. If your sneer seems higher quality than you thought, feel free to cutā€™nā€™paste it into its own post ā€” thereā€™s no quota for posting and the bar really isnā€™t that high. > The post Xitter web has spawned soo many ā€œesotericā€ right wing freaks, but thereā€™s no appropriate sneer-space for them. Iā€™m talking redscare-ish, reality challenged ā€œculture criticsā€ who write about everything but understand nothing. Iā€™m talking about reply-guys who make the same 6 tweets about the same 3 subjects. Theyā€™re inescapable at this point, yet I donā€™t see them mocked (as much as they should be) > > Like, there was one dude a while back who insisted that women couldnā€™t be surgeons because they didnā€™t believe in the moon or in stars? I think each and every one of these guys is uniquely fucked up and if I canā€™t escape them, I would love to sneer at them. (Credit and/or blame to David Gerard for starting this.)

Need to let loose a primal scream without collecting footnotes first? Have a sneer percolating in your system but not enough time/energy to make a whole post about it? Go forth and be mid: Welcome to the Stubsack, your first port of call for learning fresh Awful youā€™ll near-instantly regret.

Any awful.systems sub may be subsneered in this subthread, techtakes or no.

If your sneer seems higher quality than you thought, feel free to cutā€™nā€™paste it into its own post ā€” thereā€™s no quota for posting and the bar really isnā€™t that high.

The post Xitter web has spawned soo many ā€œesotericā€ right wing freaks, but thereā€™s no appropriate sneer-space for them. Iā€™m talking redscare-ish, reality challenged ā€œculture criticsā€ who write about everything but understand nothing. Iā€™m talking about reply-guys who make the same 6 tweets about the same 3 subjects. Theyā€™re inescapable at this point, yet I donā€™t see them mocked (as much as they should be)

Like, there was one dude a while back who insisted that women couldnā€™t be surgeons because they didnā€™t believe in the moon or in stars? I think each and every one of these guys is uniquely fucked up and if I canā€™t escape them, I would love to sneer at them.

(Credit and/or blame to David Gerard for starting this.)

  • diz@awful.systemsEnglish
    1Ā·
    30 days ago

    One thing that I couldnā€™t easily figure out is what is the constant factor. If the constant factor is significantly worse than for Strassen, then it would be much slower than Strassen except for very large matrices.

    Letā€™s say the constant factor is k.

    N should be large enough that N^((log(49)-log(48))/log(4)) > k where k is the constant factor. Letā€™s say the difference in exponents is x, then

    N^x > k

    log(N)*x > log(k)

    N > exp(log(k)/x)

    N > k^(1/x)

    So lets say x is 0.01487367169 , then weā€™re talking [constant factor]^67 for how big the matrix has to be?

    So, 2^67 sized matrix (2^134 entries in it) if Googleā€™s is 2x greater constant than Strassen.

    That donā€™t even sound right, but I double checked, (k^67) ^ 0.01487367169 is approximately k.

    edit: Iā€™m not sure what the cross over points would be if you use Googleā€™s then Strassenā€™s then O( n^3 )

    Also, Strassenā€™s algorithm works on reals (and of course, on complex numbers), while the new ā€œimprovementā€ reduces by 1 the number of real multiplications required for a product of two 4x4 complex-valued matrices.