Intel MKL configuration upgrade for Lubeck, Mir (optim, lapack, blas), cblas
lubeck, mir-optim, mir-lapack, mir-blas: * Eight Intel MKL configurations were added. They are declared in mir-blas's dub.sdl [1]. * The libraries automatically includes default Intel MKL installation directories on Windpows. * Default configuration now equals to mkl-tbb-thread-ilp on Windows. `ilp` - 64 bit indexes on x86_64 target. `tbb-thread` - Intel based multi-threading. Default configuration on Posix systems is `openblas`. lubeck: * fixed unittests for MKL ilp configurations. mir-optim: * memory allocations are aligned now (up to AVX512). This is requirement for reproducible results when Intel MKL is used as back-end. cblas: * Enum declarations were fixed. http://lubeck.dub.pm http://mir-optim.dub.pm http://mir-lapack.dub.pm http://mir-blas.dub.pm http://cblas.dub.pm This work has been sponsored by Symmetry Investments and Kaleidic Associates. https://github.com/kaleidicassociates http://symmetryinvestments.com [1] https://github.com/libmir/mir-blas/blob/master/dub.sdl Best Regards, Ilya Yaroshenko
Re: On D in competitive programming
On 7/28/18 3:51 PM, Ivan Kazmenko wrote: Hey, I wrote a post with my general reflections on using D in competitive programming. Mostly compared to C++, since that's what more than 90% of people use for it. The post is tailored to cover only the competitive programming specifics. http://codeforces.com/blog/entry/60890 (en+ru, the language switch is at the top) Good read. a lifetime ago, I competed using topcoder (and wrote a bunch of problem sets for them too). Topcoder had a "challenge" phase, where you could challenge the solutions of others. Is there anything like that in codeforces, and if so, is D an advantage as a "somewhat obscure" language (i.e. competitors can't always understand your code)? Just curious :) -Steve
Re: On D in competitive programming
On 30.07.2018 21:44, Steven Schveighoffer wrote: On 7/28/18 3:51 PM, Ivan Kazmenko wrote: Hey, I wrote a post with my general reflections on using D in competitive programming. Mostly compared to C++, since that's what more than 90% of people use for it. The post is tailored to cover only the competitive programming specifics. http://codeforces.com/blog/entry/60890 (en+ru, the language switch is at the top) Good read. a lifetime ago, I competed using topcoder (and wrote a bunch of problem sets for them too). Topcoder had a "challenge" phase, where you could challenge the solutions of others. Is there anything like that in codeforces, and if so, is D an advantage as a "somewhat obscure" language (i.e. competitors can't always understand your code)? Just curious :) -Steve On codeforces it's called "hacks", but it happens during the contest. Therefore, if your solution were to be "hacked" it would actually likely be good for you because you get a chance to fix your code before the contest ends.
Re: On D in competitive programming
On Monday, 30 July 2018 at 19:44:32 UTC, Steven Schveighoffer wrote: a lifetime ago, I competed using topcoder (and wrote a bunch of problem sets for them too). Topcoder had a "challenge" phase, where you could challenge the solutions of others. Nice! I just found your profile and problem sets from 2003-2004. I started using TopCoder in 2005, didn't see these earlier. Is there anything like that in codeforces, and if so, is D an advantage as a "somewhat obscure" language (i.e. competitors can't always understand your code)? Yeah, in a way. The challenges are called "hacks", and can happen for the whole duration of the contest. But to hack solutions for a problem, you have to first write your own solution to this problem, pass preliminary tests with it, and lock it so you can't resubmit. The key difference is, when the hacked solution itself was not locked, it still can be fixed and resubmitted (with a score penalty), which is actually a win-win. As for how a different language helps, well, perhaps it does. But, sadly, competitive programming style often goes against readability, to the extent the language allows it. In that regard, somewhat unexpectedly, I find other languages (e.g., Java or Python) more readable than C++ despite the fact that I'm less experienced with them. In C++, most competitive programming code contains a bunch of the author's exclusive #defines for the language shortcomings (or worse, #defines just to save typing). And since #defines are so flexible, everyone has their own version of the language, and some of the resulting code is straight unreadable without a deciphering effort. Ivan Kazmenko.
Re: On D in competitive programming
On Saturday, 28 July 2018 at 19:51:08 UTC, Ivan Kazmenko wrote: Hey, I wrote a post with my general reflections on using D in competitive programming. Mostly compared to C++, since that's what more than 90% of people use for it. The post is tailored to cover only the competitive programming specifics. http://codeforces.com/blog/entry/60890 (en+ru, the language switch is at the top) Ivan Kazmenko. Hi Ivan, Are competitors allowed to use mir-algorithm and mir-random? The libraries can be used for graphs (Tarjan algorithm), matrices/tensors, nd-iteration, RNGs, interpolation, and distributions? It would be nice to have this feature, as mir-algorithm can be a good default library for competitive programming. Plus competitors can add additional graph algorithms. https://github.com/libmir/mir-algorithm https://github.com/libmir/mir-random Best, Ilya Yarosenko
SAoC Updates
I've updated the SAoC page to reflect the decision to accept applications from non-university students. I want to make two things very clear. First, preference will be given to university students who can provide proof of enrollment. That's not to say that their applications will automatically be accepted, but if it comes down to a student and a non-student, each with a strong application, to fill the final slot, the student will be given preference. Second, it is incumbent upon non-student applicants who are currently employed by a software development firm to ensure there are no contractual barriers to participating. We're also still looking for potential mentors, so if you are willing to work in that role, please let me know!
Re: SAoC Updates
On Tuesday, 31 July 2018 at 03:23:41 UTC, Mike Parker wrote: I've updated the SAoC page to reflect the decision to accept applications from non-university students. Great! I think this will open up the pool of applicants considerably.
