Viewing profile — shivak

A DC busbar can propagate a short circuit across the rack, and DC circuit protection is harder than AC. So of course each server now needs its own current limiter, or a cheap fuse.…

> > The power shelf distributes DC power up and down the rack via a bus bar. This eliminates the 70 total AC power supplies found in an equivalent legacy server rack within 32 serv…

I guess we expected a marvelous interplay of hardware and software, but all we got was fudged numbers.

As you noted, Apple's fsync() behavior is defensible if PLP is assumed. Committing through the PLP cache isn't how these drives are meant to operate - hence the poor behavior of F_…

The first problem is rendering within the guest. If you only have one GPU, then GVT-g [1] virtualizes it with just a bit of overhead. But it's Intel only. The second problem is get…

Those images are hashed, not transmitted in original format. On top of that, PSI prevents you from learning those hashes, or how many there are. So you can’t tell if the database c…

> recruited mathematicians to analyze it, and published the results, as well as one in-house proof and one independent proof showing the cryptographic integrity of the system. Appl…

Compiling and installing large amounts of system software, a la `emerge world` or `make buildworld`, is great exposure to many system components. `make menuconfig` introduces one t…

I think that’s mitigated by the physical button one has to press every time something is signed. I’m not sure if the restriction to authentication has substantially simplified the …

I hoped WebAuthn would allow such general-purpose use of security devices. Unfortunately, in the spec: "To save bandwidth and processing requirements on the authenticator, the clie…

He struggled deeply with alcoholism, but the cause of his death has not been announced.

I disagree thoroughly. I've been to both Harvard and CMU, and assisted classes at the latter. CMU SCS undergrads work much harder than Harvard undergrads, and their work is more ho…

Yes, but the reason why is not exactly the same. That point is lost on Krugman, who equates gold and Bitcoin on that basis.

His description of Bitcoin is technically incorrect. As described in the original Bitcoin paper, workers are not necessarily "miners" and may be funded by transaction fees. Bitcoin…