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Comment: Re:excellent (Score 2) 226

by hublan (#48722155) Attached to: Red Hat Engineer Improves Math Performance of Glibc

I was shocked to find how poor the performance of expf() was compared to exp() in glibc. Turns out that in a handful of functions, they are changing the rounding mode of the FPU, which flushes the entire FPU state, obliterating performance. After switching to a different version -- from another library -- that didn't change rounding modes, performance was back on par.

It's perfectly understandable why rounding mode changes are necessary, since the FPU can be in any rounding mode coming in, and some guarantees are required, but they should really provide variations that do not do this. I truly hope the new implementation avoids it altogether, otherwise we're back on square one.

Comment: Re:Innovation vs rent-seeking (Score 5, Insightful) 166

by hublan (#46890395) Attached to: SpaceX Wins Injunction Against Russian Rocket Purchases

SpaceX are fantastic, world-class innovators, but lobbying the government to tilt the playing field their way smacks of rent-seeking.

You're confused. It's called levelling the playing field. What the USAF did was sign a no-bid contract with the Boeing/Lockheed to purchase Russian rocket engines. A huge no-no in the public sphere, if not illegal. The only way to get them to reverse on that was to go to court.

Comment: Re:Stretching the laws for corporations (Score 2) 161

by hublan (#44215579) Attached to: Security Researchers Submit Brief For Andrew "Weev" Auernheimer

Whoa, easy on the vitriol there, bub. Don't let bad design cloud your judgment of the actual case. It matters not how badly the AT&T folks implemented security (or not) on their system. The fact is Weev "stole" it (copied without permission) and then stupidly publicized it. What's more, he "shared it with various interested parties."

If AT&T had left printouts of highly personal data in a dumpster and someone had found it right there, then I don't think you would've had a problem fingering the culprit. AT&T, right? Dumpster diving would certainly not get someone 41 months in the slammer (e.g California v Greenwood).

In other words, it was right there in the open. Hence, the blame lies squarely with AT&T for not properly securing their customers' private information.

As far as I'm concerned, anyone calling their group Goatse Security needs to be punished anyway. I'm not interested in trying to explain to my 6yo what the fuck that means.

Your obvious lack of parenting skills is not his responsibility.

Comment: Re:Say what? (Score 1) 226

by hublan (#38318390) Attached to: Why Android Upgrades Take So Long

The entire point of a HAL is that you just plug in your drivers.

The entire point of the HAL is to abstract hardware, any hardware, away from the OS. There's nothing that says it can't encompass more of the hardware than just the IO bus, CPU and MMU, like WinNT does. On an embedded device there's very little in terms of a standard IO bus that the OS can communicate through cleanly with peripherals, so might as well abstract the whole lot.

Comment: Re:The situation is much more complicated than tha (Score 1) 364

by hublan (#35093276) Attached to: Usage Based Billing In Canada To Be Rescinded

The unethical part, as far as I understand, is that smaller ISPs rent the "last mile" piece from Bell, which they're allowed to since the infrastructure is wholly, or partially, tax-payer funded. However, they don't buy big-pipe bandwidth from Bell, but instead peer with someone like Cogent. The cost of the bandwidth over the last mile is zero, since additional bytes don't degrade the infrastructure and therefore don't add to maintenance costs. However Bell wants to charge the ISP, for this zero-cost bandwidth, at the same scale as they charge their end-users, who, unlike the ISPs, *are* using their peering connection to talk to the rest of the internet.

A good supervisor can step on your toes without messing up your shine.

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