rwg

7 ms·

1.
by rwg 1y ago
I want to like this — I think having ground-based alternatives to GPS and other space-based PNT systems is a very good thing! But after reading the paper at https://www.nab.org/bps/Broadcast_Positioning_System_Using_A..
2.
by rwg 9y ago
I was merely a Kickstarter backer of CastAR and have no insider knowledge, but my guess is that a failed moonshot attempt happened here. After raising $1 million on Kickstarter, Technical Illusions/CastAR received an investment from An
3.
by rwg 10y ago
I have an HP MicroServer N40L that I bought several years ago, and it's almost a doorstop now. Its CPU (dual-core 1.5 GHz AMD Turion II Neo) is slow and doesn't support AES-NI. It maxes out at 8 GB of RAM (16 GB of RAM if the st
4.
by rwg 10y ago
At ${PREVIOUS_JOB}, I changed offices and discovered my window wasn't the only thing I lost in the move: SSH sessions kept dying with MAC errors. It happened with multiple computers with different NICs and running different OSes, so i
5.
by rwg 11y ago
Just to put a number to "screaming fast", 2.5 GB/s sequential reads averaged across the entire drive on a Samsung 950 Pro NVMe SSD: https://pbs.twimg.com/media/CaMhc2oVAAE4q3q.jpg:large
6.
by rwg 11y ago
By comparison, today's (January 1996) state-of-the art technologies have feature sizes of about 0.25 microns. And today (November 2015), chips manufactured on 14 nanometer (0.014 micron) processes are shipping in volume.
7.
by rwg 11y ago
Android 4+ supports IPv6 on both the cellular and wireless Ethernet interfaces. It only supports stateless address auto-configuration (SLAAC), however, and does not support DHCPv6 at all. (There's a 3+ year old Android DHCPv6 bug tha
8.
by rwg 11y ago
The ~5 years between AMD's release of the Athlon 64 and Intel's Nehalem were truly AMD's glory days on the server. We had two clusters, one with pairs of 2.2 GHz Opteron 248 CPUs in its compute nodes and another with pairs o
9.
by rwg 11y ago
There was no need, really. The university's networking/telecommunications group ran their own pair of stratum-1 NTP servers, plus four stratum-2 NTP servers, so my stratum-1 wasn't really needed. I ran my stratum-1 NTP serv
10.
by rwg 11y ago
At ${PREVIOUS_JOB}, I ran a stratum-1 NTP server that got a timecode and PPS signal from a GPS clock. I could tell if someone had left the door to the lab open by what PLL frequency "ntpdc -c kerninfo" reported on that server — t
11.
by rwg 11y ago
I don't know if they inject ads, but they have the capability to do it. When I connect to an "xfinitywifi" SSID, the first HTTP page load I do will have a little "You're using XFINITY Wi-Fi. Isn't it totally
12.
Premera Blue Cross victim of cyber attack; 11M customers exposed(king5.com)
3 points by rwg 12y ago|0 comments
13.
by rwg 12y ago
I'm guessing it's related to IPv6 over Bluetooth Low Energy, which is currently working its way through the bowels of the IETF: https://tools.ietf.org/html/draft-ietf-6lo-btle Basically, they saw what a glori
14.
by rwg 12y ago
Woo, nostalgia! My father's TRS-80 Model 4P was "my" first computer back in the mid- to late-1980s, and I spent more time on it than an elementary school kid probably should've. (Every time a new issue of Family Comput
15.
by rwg 12y ago
You need to talk to a lawyer who specializes in Texas employment law ASAP. Do not sign anything that you do not fully understand the implications of, even if your reading of the non-compete agreement and Texas's Covenants Not to Com
16.
by rwg 12y ago
Solaris 9+, recentish Linux, and recentish BSD should all support algorithm $1$ (MD5) at an absolute minimum. Depending on OS versions, you might also be able to choose from $2a$ (Blowfish), $5$ (SHA-256), and $6$ (SHA-512). On Solaris, t
17.
by rwg 12y ago
Why impossible? (Hint: 127/8 is a network, too.)
18.
by rwg 12y ago
Another fun Unicode-related bug in OS X 10.9: % printf 'Unicode strike\xcd\x9bs again' | LANG=en_US.UTF-8 od -tc Assertion failed: (width > 0), function conv_c, file /SourceCache/shell_cmds/shell_cmds-1
19.
by rwg 12y ago
I think you're underestimating the number of poorly configured/written SMTP clients and servers out there in the wild. As an example, here's smtp.comcast.net on tcp/587 (SMTP submission): Connection to smtp.comcas
20.
by rwg 12y ago
This article came across my Twitter feed this morning: MEEGO-T01 HDMI TV Stick Supports Android, Windows 8.1, and Ubuntu/Linux http://www.cnx-software.com/2014/10/15/meego-t01-hdmi-tv-sti... There are ot
21.
by rwg 12y ago
Intel is almost giving away Bay Trail-T CPUs to try and claw marketshare away from ARM-based CPUs/SoCs. As an example, Intel's advertised price for an Atom Z3735F (quad core, 1.33–1.83 GHz, 2.2 W SDP, 2 GB RAM max., Intel's
22.
by rwg 12y ago
Also, "don't hack random companies and brag about it to your friends and (Federal government IT security contractor) co-workers." http://www.archives.gov/research/military/ww2/photos/images
23.
by rwg 12y ago
It's partially broken in Safari 7.0.6 for the same reason — the ellipse method isn't a WebKit-ism, it's a WHATWG-ism that Google's implemented: http://www.whatwg.org/specs/web-apps/current-work&
24.
by rwg 12y ago
Disassembling data structures nicely can take much more time than just tearing them down brutally when the process exits. A wonderful trend I've noticed in Free/Open Source software lately is proudly claiming that a program is &
25.
by rwg 12y ago
That's not a behavior you can count on — clang 3.4 will optimize doSecure() down to "ret" and main() down to "xorl %eax, %eax" + "ret" in both cases, for example. Also, gcc not optimizing out the malloc +
26.
by rwg 12y ago
Section 4 ("Radios, we have Radios") really dates this article. DARPA purchased four of the Spectracom WWVB receivers [...] The radios were redeployed in 1986 in the NSF Phase I backbone network, which used Fuzzball routers [26
27.
by rwg 12y ago
How cheap is dirt cheap? $1000? $100? $10? $1? $0.1? I think a sub-$500 per-station cost would be wonderful, but this is all just a pipe dream... Are there established algorithms to determine what seismic data is 'interesting'
28.
by rwg 12y ago
As someone who used to work for a university's geosciences department as a Unix sysadmin/programmer and who worked on two different seismic monitoring networks (one spread across the state for earthquake monitoring and one parked
29.
by rwg 12y ago
It even successfully un-mangles the shipping label from Ode to a Shipping Label: https://www.facebook.com/cmb/posts/619241744770551:0 >>> ftfy.fix_text('L&amp;Atilde;&amp;sup3;p
30.
by rwg 12y ago
The default partitioning of CAM space on Cisco gear is the obvious issue, but the root cause is the massive deaggregation of announced IPv4 routes on the Internet. You can see various statistics about this problem at http://www.

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