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Tuesday, October 12th 2021
17:00-18:00 BST / 18:00-19:00 CEST
Title: Feedback Directed Optimization for OCaml
Speaker: Greta Yorsh

Overview:
OCamlFDO is a tool that uses information about frequently-executed program parts to guide compile-time optimization decisions. Code layout optimization is a classic example of why this information is useful, how hardware and compilers interact, and how (not to) measure performance. In this talk, we will explore the design of OCamlFDO and how it was influenced by practical needs to fit in with different built systems, developers' workflows, and the open-source compiler itself.

Speaker Bio:
Greta Yorsh works on OCaml compiler here at Jane Street, having previously worked on GCC compiler at ARM. She is passionate about low-level optimizations that present the combined challenges of ensuring correctness and achieving the best possible performance on modern hardware. She studied Computer Science at Tel Aviv University and has been involved in several academic and industrial research projects in the areas of software verification, program synthesis, and superoptimization.

Thursday, October 14th 2021
17:00-18:00 BST / 18:00-19:00 CEST
Title: Algorithmic challenges in build systems and incremental computation
Speaker: Andrey Mokhov

Overview:
Build systems are used by every software developer on the planet, but they are far from being a solved problem. For years the venerable Make dominated, but more recently the challenges of scale have driven large software firms to develop their own build systems, such as Google's Bazel or Facebook's Buck. Jane Street is not as large, but we are not in exception; in fact, we developed not one, but two build systems! In this talk, you'll learn about the build system called Dune and about the incremental computation library that powers it. As an example of a tricky algorithmic problem that we recently needed to solve, we'll look at concurrent cycle detection in build graphs comprising millions of nodes.

Speaker bio:
Andrey Mokhov works in Jane Street's build systems team, trying to keep our build times under control despite the rapidly growing population of software developers. Before joining Jane Street, he was an academic researcher at Newcastle University (UK), working on asynchronous circuits, functional programming, and build systems.

Please RSVP to either, or both of these talks using the link below by Sunday 10th October at 23:59.
Final information including dial in details will be sent on Monday 11th October.

Jane Street is currently actively recruiting for our 2022 Summer Internship in Software Engineering. To find out more and apply click here.

For any questions please contact Beth Gorman (bgorman@janestreet.com)

Hi! The introduction period has come to an end and we still have some backpacks left. These will therefore be distributed free of charge to all F-guild members, as long as we have stock. Distribution will take place in MH during lunch on Wednesday, Thursday and Friday.
You are welcome to pick up backpacks for your friends (max 3, must also be members of the F-guild). If you intend to do this we ask that the friends who you are picking up backpacks for fill in the following form:
https://docs.google.com/forms/d/e/1FAIpQLSebBdYfHz-VfmxNtC4iI8z_f92TeYKqM0Xpi3ya6Hsyyi1qeA/viewform?usp=sf_link

See you at the backpack distribution!
Sincerely/
Head of Corporate Relations

Registration has now opened for CellaVision's lunch lecture next week (30/9)! The first 100 who sign up will receive a free Hilbert sandwich! 🥳

CellaVision is the F-guild's main partner and on Thursday next week, Adam Morell, development manager at the company and old F-student from 1998, will talk about how CellaVision's systems work, and how they use image analysis and neural networks to simplify and improve healthcare.

Registration is via the app or website:
https://fsektionen.se/evenemang/1106

Hi!

Tomorrow (Monday) at lunch 12:15-13:00 in Hilbertkorridoren payment is made for the Elk Trip.

Sincerely,
Reiseleiteriet

Jane Street will be hosting a virtual ESTIMATHON!
Tuesday 5th October 2021 - 17:30-19:00 BST

Hosted via Zoom

Register as an individual* here by Thursday September 30th 23:59 BST.

The Estimathon! is a mind bending mixture of math and trivia. In teams, you'll attempt 13 Fermi problems in 30 minutes, ranging from totally trivial to positively Putnamesque. Be prepared to come up with the best set of confidence intervals! Sample problems include:

How many stop signs are in New York City?
How many babies were born in 1900?
How many Social Security Numbers are prime?

We will also have time at the end of the Estimathon for a live Q&A session with Jane Street Traders, Software Engineers and Recruiters.

Typically when we come to campus, we bring swag. Since we can't meet in-person, we will provide guests access to order one of our 2020 t-shirts! More details will follow on this after the event :)

*Estimathon is a team-based competition. All participants will register as individuals and be placed on a team. But due to the logistics associated with running the event virtually, you cannot sign-up as a team.

During the period 28 September to 7 October, students at Lund University will have opportunities to get vaccinated against Covid-19 at different campus locations in Lund.

Find more information about the locations and dates:
https://www.lunduniversity.lu.se/coronavirus-covid-19-information-students

Hi all guild members!

The extra election for the Representative to the International Affairs Committee of TLTH (Riac) and the election for Representative for the Exchange Students is now open again, because the previous candidate canceled their application. However, a new candidate for the Representative for the Exchange Students has already been found so this particular election will close again on Saturday night.

Kind regards the Students' Educational Council.

We in the LTH Equality Board from F, W and M have worked day and night to organise an inspiring and relevant guest-lecture during the introduction period!!
And the result is nothing short of amazing: The 28th of September, Peter Rung is coming to the kåraula to talk about macho-culture and norms, with a focus on university-life and young adults. Bring your friends and learn something new about something super important!
NOTE: THIS EVENT WILL BE HELD IN SWEDISH - SORRY!! 🙁
You can ofcourse anyway come if you want: Link to registration form

Detta inlägg är bara på engelska då det främst berör utbytesstudenter.
This post will only be in English since it mainly concerns exchange students.

Hi all guild members!

The Students’ Educational Council is back again with yet another election this time it is the election for Representative for the Exchange Students. Everybody at the guild can apply for this position, but it is strongly recommended that you are an exchange student yourself.

The Representative for the Exchange Students is to make sure that the Students’ Educational Council takes the special study conditions of the exchange students into consideration. The representative also takes part in discussions regarding matters relating to exchange students at the guild and is the contact person between the Students’ Educational Council and the exchange students. The term of this position is one semester. At the moment we have already received a candidate so the election will close in one week.

So if you are interested in the position, hurry up and apply to it by emailing um@fsektionen.se.

Kind regards Students´ Educational Council.

Heyo!

Tomorrow during lunch (12:15-13:00 Thursday 9/9) you must pay for the Toga sitting in the Hilbert Corridor in Mattehuset, so don't miss paying if you want to attend the sitting.

We prefer if one person from each group pays for their entire group, so we avoid crowding.

Happy greetings,
Minister for Culture and Reiseleiteriet