zerohp

13 ms·

151.
by zerohp 8y ago
> “My diabetes went into remission basically immediately, almost that same day. And I’ve been off insulin for about 8 months now,” That's not because of the surgery. It's because he was forced into an extended fast before (and
152.
by zerohp 9y ago
Incorrect. When people talk about kernel memory, they are talking about pages marked as supervisor in the page tables for a particular process. That is not "anything in memory."
153.
by zerohp 9y ago
No it doesn't. The Magnuson-Moss Warranty Act of 1975 forces them to honor the warranty unless they can prove that the non-OEM part caused the fault.
154.
by zerohp 9y ago
Regarding 3. It's rumored in the chip design community that NVidia designed an x86 CPU and got as far as engineering sample silicon but the project was cancelled because they couldn't work out the licensing.
155.
by zerohp 9y ago
They should have concluded that people with anxiety disorder more likely to join Mensa.
156.
by zerohp 9y ago
My experience agrees with yours. Many big-budget teams use a hardware emulator like the Palladium XP or the similar Synopsis device. Both built from FPGAs. Hardware emulators are expensive, but a single mask respin at 7, 10, or 16nm is even
157.
by zerohp 9y ago
The Video Toaster add-on board did this, but it was a custom piece of hardware. The video data never went through the CPU bus or memory.
158.
by zerohp 9y ago
Corporations have twisted community politics to make such things very difficult. In my community, a municipal fiber optic network was built throughout the area but lobbying and politics made it nearly impossible to finish, so there are very
159.
by zerohp 9y ago
POSIX doesn't define the syscalls. It defines requirements for system libraries.
160.
by zerohp 9y ago
You will see stacked memory and silicon interposers, but you won't see main memory on the CPU die. DRAM is based on an array of what is called "trench capacitors." The fabrication process is sufficiently different that they d
161.
by zerohp 9y ago
The front ends were covered by plastic wrap but I am certain they were Model 3 by the shape of the headlights and the overall length of the car. I regret that I didn't get a picture. I assume they are press cars.
162.
by zerohp 9y ago
Not that it means much, but I saw a semi trailer full of new Model 3 on I-80 heading east near Des Moines Iowa today. All of them were black and still had factory wrap on the panels.
163.
by zerohp 9y ago
I highly recommend a visit to the Living Computer Museum if you find the time. I had a few hours to spare on a Seattle visit last summer and Bruce was happy to show me the CDC 6500 and his other work.
164.
by zerohp 10y ago
A-Max for the Amiga came out in 1988. It was a hardware dongle with Mac roms and connector for an Apple compatible floppy drive.
165.
by zerohp 10y ago
It doesn't take much time to learn to hand solder SMD. We teach 200 students to do it every semester at UIUC in the EE senior design lab. Our rule of thumb is that if it has pins that are not flush to the bottom of the package you can
166.
by zerohp 10y ago
Fully automatic tool flows give lower quality results than tools+trained engineers. Most of the problems are NP-Hard. It's an active area of research.
167.
by zerohp 10y ago
There is a small town named Madrid just southwest of Ames, Iowa.
168.
by zerohp 10y ago
Just a nitpick, but Bob Berenz is an electrician not an electrical engineer. Electrical engineering is firmly rooted in modern physics and an educated electrical engineer would not need "help with the math." Out of all engineering
169.
by zerohp 10y ago
I was a 34 year old software developer when I started my first semester at a US community college. I transferred to a top US engineering school a year later. I finished two BS degrees (Computer Science and Electrical Engineering) at 38 and
170.
by zerohp 10y ago
Agreed. It is also taught by at least one university (UIUC) in a required class (in 2016.) Not a lost art.
171.
by zerohp 10y ago
I wonder if any exploits have successfully used voltage or frequency glitching on a modern processor with DVFS (Dynamic Voltage and Frequency Scaling.)
172.
by zerohp 10y ago
Aside from the obvious problems in your comparison. Moore's Law says nothing about frequency. The "rule" that changed around 2006 was Dennard scaling. https://en.wikipedia.org/wiki/Dennard_scaling#Breakdo
173.
Report on the Sunway TaihuLight System [pdf](netlib.org)
27 points by zerohp 10y ago|6 comments
174.
by zerohp 10y ago
A system built with the same peak flops using GPUs would actually be more useful than what they built. The Sunway TaihuLight processing elements have 64KB scratchpad, no data cache, and have less memory bandwidth than Nvidia Fermi (7 years
175.
by zerohp 10y ago
As someone who spends a lot of time studying computer architecture, I'm skeptical about this machine because of its interconnect design and memory bandwidth. It seems to be optimized specifically for LINPACK. Many people are critical o
176.
by zerohp 10y ago
This chip from Lattice is supported by icestorm. It is the only open source FPGA tool chain. http://www.clifford.at/icestorm/
177.
by zerohp 10y ago
Exhaustive state testing is intractable for any modern design. Some combination of constrained random verification and directed testing is used. http://chipdesignmag.com/display.php?articleId=4913
178.
by zerohp 10y ago
Formal verification is being used by virtually every big name in chip design. That said, this is the first I've read of someone starting by parsing the ISA specification. It has been talked about but some people (myself included) were
179.
by zerohp 10y ago
Kwiat was already recruiting undergrads in 2013 for this experiment. If I recall, he did not yet have a reliable single photon source but was expecting to have it very soon. I was in his undergrad quantum physics (for engineers) course at t
180.
by zerohp 10y ago
Moreover, the nation was able to debate (and protest) segregation while, at the same time, go to the moon and build the foundations for the computer revolution (among other things.) We can worry about bathrooms AND be builders.

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