knweiss

6 ms·

1.
by knweiss 3y ago
I can’t believe you’re the only one mentioning this.
2.
by knweiss 4y ago
Feedback and bug reports (exception: security) should be public and users should be able to vote. Apple then could prioritize much better. Also, take a look at their user forums: They are full of bug reports with hundreds of users having th
3.
by knweiss 4y ago
Interactive PFSA map for the US: https://www.ewg.org/interactive-maps/pfas_contamination/map/
4.
by knweiss 7y ago
FWIW: AMD offers this: https://developer.amd.com/amd-aocl/blas-library/ The source code is available on GitHub.
5.
by knweiss 9y ago
IMHO it's worth mentioning that this discussion is about Spectre variant 1 (as is the original article). I.e. we should not write "Spectre" when we talk about a specific Spectre variant. I'm mentioning this because (at l
6.
by knweiss 10y ago
There are better cryptographic hash functions (e.g. Blake2) than SHA1 that are even faster. Check out the "results" slide of this slide deck for the cycles per byte table: https://blake2.net/acns/slides.html
7.
by knweiss 10y ago
From the OpenSSH moduli(5) man page: "When performing Diffie-Hellman Group Exchange, sshd(8) first estimates the size of the modulus required to produce enough Diffie-Hellman output to sufficiently key the selected symmetric
8.
by knweiss 10y ago
An Advanced Introduction to GnuPG by Neal H. Walfield https://begriffs.com/posts/2016-11-05-advanced-intro-gnupg.h...
9.
by knweiss 10y ago
Quote: "Dropbox was moving away from using the encryption algorithm SHA-1"
10.
by knweiss 10y ago
Honey.
11.
How do you report bugs that you alone can see?(trust-in-soft.com)
3 points by knweiss 10y ago|0 comments
12.
APFS in Detail(dtrace.org)
237 points by knweiss 10y ago|94 comments
13.
by knweiss 10y ago
"Although APFS does checksum metadata blocks it does not do anything to provide resilience for data blocks. That is a huge omission in a modern filesystem, a point I tried to politely but forcefully make in the File System Lab directl
14.
Apple File System(russbishop.net)
6 points by knweiss 10y ago|2 comments
15.
by knweiss 10y ago
Brendan, did you read this awesome blog post (which mentions your work btw) about Google's tracing framework which may explain the kind of problems they want to solve? http://danluu.com/perf-tracing/ " Samp
16.
by knweiss 10y ago
Check out the "Intel AVX Instructions Optimization" slide on http://anandtech.com/show/10158/the-intel-xeon-e5-v4-review/... . Quote: On Haswell, one AVX instruction on one core forced all cores on
17.
by knweiss 11y ago
The job of the distributions would be much easier if more software projects would a) consequently use semantic versioning (MAJOR.MINOR.PATCH, see http://semver.org for details) and b) explicitly and officially designate that the
18.
by knweiss 11y ago
FWIW: The new Ultra HD Blu-Ray Disc format which supports 4K, HDR, and Dolby Atmos/DTS:X will launch soon (if you can still tolerate an optical medium). Watch for the new "Ultra HD Premium" logo on compatible devices.
19.
by knweiss 11y ago
The Knights Landing (KNL) memory hierarchy is different from Knights Corner because it now features MCDRAM (HBM) - even with three different modes [0]. [0] - http://www.anandtech.com/show/9794/a-few-notes-on-intels
20.
by knweiss 11y ago
The next step: A distributed, content-addressed caching system that allows the web browser to fetch the data from the fastest/nearest caching server by hash . IPFS comes to mind.
21.
by knweiss 11y ago
Monty's videos are a good start: https://www.xiph.org/video/ https://www.xiph.org/~xiphmont/demo/
22.
by knweiss 11y ago
I wonder if there's a good explanation for non-experts that gives at least an idea how an attacker would exploit the (key, nonce) pair reuse and why everything fails so catastrophically?
23.
by knweiss 11y ago
Watching this video feels like attending a funeral together with a clown.
24.
by knweiss 11y ago
when I think NVM I think of Non-Volatile Memory something like RAM that doesn't go blank when you hit the power button This is the "Persistent Memory" device class. See e.g. this article for a nice summary of the status quo
25.
by knweiss 11y ago
The iPad Air 2 has 2 GB RAM.
26.
by knweiss 12y ago
> but when you were a few years out of college, did you have 3-6 months of salary saved up? I certainly didn't. Actually, I did and it was a top-priority for me.
27.
by knweiss 12y ago
IMHO the data transfer rate is the important info: First 3.5 GB : 196 GB/s == 7/8 of 224 GB/s Last 0.5 GB : 28 GB/s == 1/8 of 224 GB/s "When the GPU is accessing this segment of memory, it shou
28.
by knweiss 12y ago
I'ld love to see bug voting on Open Radar. Identifying the most important bugs would become much easier.
29.
by knweiss 12y ago
Soon it will support Spotlight. See https://openzfsonosx.org/wiki/Changelog#1.3.1-RC5
30.
by knweiss 12y ago
The "stopping privacy" argument could be a red herring.

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