jerven

25 ms·

211.
by jerven 9y ago
We use XFS for sparql.uniprot.org (basically columnar database with semantic graph) there we recently retested it by accident. We use 2*4 TB consumer SSD ,ok rich consumer ;) With XFS we have 10-13% faster linear write of one big file (1.3T
212.
by jerven 9y ago
I think Graal and Truffle are really great technologies. With a lot of potential to overcome unneeded silo's between programming language communities. For example the project I work on has a website that has been continuously improved
213.
by jerven 9y ago
You are (like us) most likely too small. Unless you are buying 1,000 machines at a time you don't get there :( Waiting one more quarter for AMD servers to arrive from the major vendors is a good idea. But if your spend is in the milli
214.
by jerven 9y ago
I use both Uber and TaxiPhone app in Geneva Switzerland. The taxi phone app is better because it is more honest, no fake cars in the TaxiPhone app driving "in the middle of lake geneva (along the pedestrian ferry routes)" while th
215.
by jerven 9y ago
Another option is to compare a minimally optimizing compiler with a more optimizing compiler. This one can do in Java land with client/server flags. Client takes for our workload 15% more time to run than server. Now what is that 15% w
216.
by jerven 9y ago
Just as a data point I wanted to see what the benefit of JVM HotSpot is over JVM just interpreting. Code that normally runs in 22 minutes with HotSpot is still running 99minutes later in interpreter only mode! I am starting to think that th
217.
by jerven 9y ago
I love SPARQL, although I often say it causes problems for developers but solves problems for organizations. I know I am not in the average developer sphere, but working as a data provider to the wider public (ok scientific public) SPARQL i
218.
by jerven 9y ago
Difference with the linux kernel one is that this one is rather uncomplete. There are a lot of biological pathways that are just unknown.
219.
by jerven 9y ago
The bug is from 1997, so not up to date with the latest versions of knuth. There are nice new string hash functions like murmur, cutyhash and xxhash that I believe are not covered in the art of computer programming.
220.
by jerven 9y ago
I agree with this, reading it I feel once again the limitations of written communication forms. However, the top level discussion is about is it worth using an optimizing compiler. Or in my example is it worth using TruffleRuby instead of M
221.
by jerven 9y ago
def clamp(num, min, max) [min, num, max].sort[1] end being turned into def clamp(num, min, max) if (num < min) { if (num < max) return num; else r
222.
by jerven 9y ago
If you look at modern JIT compilers such as Truffle-Ruby, then yes it will change algorithms. e.g. changing sort algorithms depending on data size. if the data is small enough it will do a bubblesort on registers, when its big it will do Ti
223.
by jerven 9y ago
I am always impressed by the IGV of graal/truffle to see how code is compiled. Really looking forward to JVM-9/JVMCI general availability so it becomes easier to play with truffle.
224.
by jerven 9y ago
Talking about it is great, but you must document it all. You must get the letter, as it is a rather significant amendment to the employment contract. All kinds of bad stuff can happen when you don't document this well. Employee and emp
225.
by jerven 9y ago
According to a poster I saw once posted in front of my house, the average IT salary is 8700 CHF a month. But expect more depending on the region and for programmers.
226.
by jerven 9y ago
Many people have legal dispute insurance (at least in Norway, Netherlands, and Switzerland[1] this is not uncommon once you make a normal IT salary). It is not that expensive and well worth having. They wont pay for top lawyers, but it will
227.
by jerven 9y ago
I think that shipilev wrote this blog post after seeing that post. He and Gil Tene, of Azul Zing/C4 pauseless GC fame, don't seem to be impressed by the GO team GC claims. Mostly because the GO gc does fragment, which can lead to
228.
by jerven 9y ago
This! and know why you are building what you are building.
229.
by jerven 9y ago
public UniProt.org went from SQL normalized -> SQL primary key/blob to proper K/V (BDBje) to custom K/V in the space of ten years. However, data production is still a mix of batch and sql systems.
230.
by jerven 9y ago
Thanks you are correct, I messed up my numbers.
231.
by jerven 9y ago
Neem OIL is an biological pesticide that is organic approved. Vastly more likely to kill you than roundup use. Neem OIL LD50 = 31.95g/kg Caffeine LD50 = 175 g/kg (150-200 estimate in humans) Glycosate LD50 = > 2000
232.
by jerven 10y ago
Does it scale is a very valid question for Cayley. Running sparql.uniprot.org I know virtuoso scales easily to 27 billion triples. Best benchmark I have seen for Cayley is 21 million RDF triples. RDF and relational are similar but free form
233.
by jerven 10y ago
This is a bit off topic, but I feel that Swagger etc... and actually most API docs are to human centric. You can't auto chain APIs together without a lot of developer intervention. The one thing I saw that allowed that was SADI service
234.
by jerven 10y ago
Its because most of these companies are small and largely family owned. i.e. the owners understand the product, and moving it to china means they would need to move to china as well. In many ways the difference is that headquarters is next
235.
by jerven 10y ago
The checker framework is also nice for helping with thread safety. https://checkerframework.org/ its an extend type system for the Java Language using annotated variables and methods. Its really nice and helped catch quite
236.
by jerven 10y ago
The Azul Zing inbuilt tooling was already very very nice 3 years ago when I got to try it for a bit. Of course in the trial with Zing GC was no longer something to worry about as that just worked :) I couldn't get the budget round and
237.
by jerven 10y ago
10. Go to a few jewelry actions. They are more fun, nicer things. You will always pay the market rate, far below retail. I bought the engagement ring (saphire) retail. But completed it into a complete set of earrings, bracelet and necklace
238.
by jerven 10y ago
Completely agree, as nuclear won't ramp up in the next decade. i.e. if I have 10 billion USD in the bank I can have that all converted in solar panels or wind turbines in 2 years. A nuclear plant would take 10 years just to get build.
239.
by jerven 10y ago
And still is ;) Partly because some key work loads just did not run well on GPU's due to lack of addressable memory. Lots of amdahls getting in the way. Some of the key use cases required stupendous large memory machines (genome assemb
240.
by jerven 10y ago
Also from Switzerland to France, if departing from Geneva. As well as Geneva airport having a dedicated section for flying to france.

More ›