jedbrown

55 ms·

481.
by jedbrown 15y ago
I hate hiking boots and just use trail running shoes for everything that doesn't require rigid crampons. They're lighter, faster, more comfortable, dry more quickly, and cost around $100. Of course they wear out faster so it's not necessari
482.
by jedbrown 15y ago
If you are willing to pull your mail down into a local maildir one way or another, you can index and search it with notmuch ( http://notmuchmail.org/ ).
483.
by jedbrown 15y ago
Four orders of magnitude implies the previous best was 0.1 seconds.
484.
by jedbrown 16y ago
Transparent huge pages (also new in 2.6.38) have caused about 5% degradation in memory bandwidth (measured by STREAM benchmarks and other kernels, independent of the use of software prefetch) on my machines. This is somewhat strange because
485.
by jedbrown 16y ago
I concede that my arguments were directed primarily at Haskell and actually more about data structure reuse than about GC. The threading model and task affinity is also relevant: if a compacting GC moves a hot data structure to a different
486.
by jedbrown 16y ago
Different strictness analysis results in using memory differently. Note that some of Don's references are embedding a DSL that gives a high-level interface to very low-level code (e.g. CUDA) specific to this problem. They should have contro
487.
by jedbrown 16y ago
If you're not within 10% for these kernels, chances are that memory is being used differently. This gets to a further matter which I think is perhaps the greatest failure of current multi/many-core programming paradigms: assuming a flat mem
488.
by jedbrown 16y ago
This is a worthwhile research topic, but it doesn't really answer my question. From the first paper you cite: The single threaded Handwritten C version is about 45% faster than our best Haskell result, which is achieved with 3 threads. Me
489.
by jedbrown 16y ago
Show me a memory-intensive kernel in which Haskell runs close to the performance model. Sparse and dense matrix kernels would be a good place to start. Our C code for sparse matrix-vector products and sparse triangular solves gets better th
490.
by jedbrown 16y ago
I think Egg (Emacs Got Git) is really slick: https://github.com/byplayer/egg
491.
by jedbrown 16y ago
> that problem would take you hours to solve I don't know, two Newton iterations are enough: *GHCi> let croot f x = x - (x^3 - f) / (3*x^2) in take 5 . iterate (croot 0.0093) $ 0.2 [0.2,0.21083333333333332,0.2102957483409451,0
492.
by jedbrown 16y ago
Need a better way do inline quoting. Gmail insists on top-posting even when I select the part I want to reply to, it's several extra steps to cite and trim properly, especially if you want to reply to more than one part of a message.
493.
by jedbrown 16y ago
That has existed for years.
494.
by jedbrown 16y ago
Sounds like your example user never runs anything on a remote machine except through the browser. Why bother with any other protocols?
495.
by jedbrown 16y ago
The typical thing is to run the X server locally and the client remotely. There are lots of reasons to do this such as the server possessing special hardware, license managers, fast disks with the data you care about, more memory, more core
496.
by jedbrown 16y ago
The prevailing winds are to the NW. Presumably the smaller doses are for towns in other directions, but that would be a rather biased average.
497.
by jedbrown 16y ago
Using CDMA in the US and GSM in the rest of the world would mean different hardware. Were they ever seriously considering that?
498.
by jedbrown 16y ago
Verizon was not a GSM carrier.
499.
by jedbrown 16y ago
I recently wanted a Zurich -> San Francisco -> Buenos Aires -> Zurich ticket. This was either not possible or unreasonably priced so I ended up with two independent tickets, one for the Zurich -> SF round trip and another wi
500.
by jedbrown 16y ago
Some circumstances warrant "there is a theorem stating that what you want is not possible."
501.
by jedbrown 16y ago
What does this story actually show? Did they have some a priori guarantee that one of the batches would sell out? If so, why not do a small amount of research to figure out which one?
502.
by jedbrown 16y ago
Another frequently updated source: http://iaea.org/newscenter/news/tsunamiupdate01.html
503.
by jedbrown 16y ago
In what sense do these lack conditionals?
504.
by jedbrown 16y ago
As a related matter, harsh criticism sometimes makes it easier to distinguish good products/people from those that are not worth your time. I tend to appreciate the opinion of people who do not hold back criticism, certainly their praise is
505.
by jedbrown 16y ago
And a response from the authors of the paper: http://matt.might.net/articles/parsing-with-derivatives/ ( http://news.ycombinator.com/item?id=2001736 )
506.
by jedbrown 16y ago
It's not?
507.
by jedbrown 16y ago
The difference comes when you want to merge that branch back in (retaining history), or cherry-pick part of it.
508.
by jedbrown 16y ago
A permanent switch to Git for GHC and all associated repositories is planned for March 15.
509.
by jedbrown 16y ago
There is a very big difference between "too smart" and "too complicated". I think Haskell is dangerously close to the former category while C++ is firmly in the second. I appreciate "smart" for many tasks, but sometimes the operational sema
510.
by jedbrown 16y ago
I said "at least" instead of giving a more precise number exactly because the WSJ's "primary-care" statistic included "general practitioners, internists, family physicians and pediatricians" and I remembered seeing an older statistic claimi

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