## +24 ## Hidden Overhead of a Function API ## OLEKSANDR BACHERIKOV ## What we do at Snap with C++  Neural style transfer returned in the EDX:EAX register pair. Larger structures are returned in the EAX register as pointers to hidden return structures... Structures that are not PODs will not be returned in registers. ## General

Go’s Hidden #pragmas GopherChina 2017 ’ alt=‘OCR图片’/> @davecheney Go programmer from Sydney, Australia ’ alt=‘OCR图片’/> But first, a history lesson. Perl use strict; use strict “vars”; use strict “refs”;

THE STATE OF GO What’s New since Go 1.20 白明 Tony Bai 《Go语言精进之路》作者 tonybai.com博主 那段时间错过的Go版本 2022.3 Go 1.18 泛型落地 2022.8 Go 1.19 修订Go内存模型文档、支持Soft memory limit 2023.3 Go 1.20 引入Profile-Guided Optimizations

## RNN Layer使用 主讲人：龙良曲 ## Folded model [batch, feature len]@[hidden len, feature len] $ ^{T} $ +[batch, hidden len]@[hidden len, hidden len] $ ^{T} $ [0,0,0 ... ] $$ x_{t}@w_{xh} + h_{t}@w_{hh} $$ $$ feature $ x_{t} $ : [batch, feature len] x: [seq len, batch, feature len] ## input dim, hidden dim ## ☐ ☐ ☐ In [13]: rnn=nn.RNN(100, 10) In [12]: rnn._parameters.keys() Out[12]: odict_keys ___init___ • input_size – The number of expected features in the input x • hidden_size – The number of features in the hidden state h - num_layers – Number of recurrent layers. E.g., setting num_layers=2

## State of the UI: Leveraging Kubernetes Dashboard and Shaping its Future Spencer Sugarman UX Researcher, Google Dan Romlein UX Designer, Google ## Talk Goals 1. What Dashboard is and why you should support kind/feature lifecycle/frozen #3148 opened on Jul 16 by SerialVelocity Angular Migration: State Management kind/feature lifecycle/frozen #3133 opened on Jul 7 by austbot Support metrics API good

Analytics Spring 2020 2/25: State Management Vasiliki (Vasia) Kalavri vkalavri@bu.edu ## State in dataflow computations Any non-trivial streaming computation maintains state: • rolling aggregations jpg) ## Streaming state ## Unmanaged • No explicit state primitives - Users define state using arbitrary types - The system is unaware of which parts of an operator constitute state ## Managed • Explicit Explicit state primitives including state types and interfaces - The system is aware of state and can transparently checkpoint it, restore it, re-scale it ![Image](/uploads/documents/b/9/f/d/b9fd594d

Elasticity policies and state migration Vasiliki (Vasia) Kalavri vkalavri@bu.edu Streaming applications are long-running • Workload will change • Conditions might change • State is accumulated over time terminate processes • Adjust dataflow channels and network connections • Re-partition and migrate state in a consistent manner • Block and unblock computations to ensure result correctness ## Automatic Re-configuration requires state migration with correctness guarantees. ## State migration ## State migration strategies ## • Stop-and-restart • halt the whole computation, take a state snapshot of all operators

cf30310bdd99235d1d629/p5_1.jpg) ## Passive Standby • Each primary periodically checkpoints its state and sends it to the secondary  ## Snapshotting Protocols A snapshot algorithm attempts to capture a coherent global state of a distributed system We need to retrieve a distributed cut in a system execution that yields a

Client 1 Local Game State  Client 2 Local Game State ## Deterministic simulation Initial state GameSystems::Tick() deb25e9aa12f06fc0/p14_2.jpg) GameSystems::Tick() on Desktop PC Intel Core i7-8700K New state New state With a deterministic simulation, we mostly need to send player inputs! ## Deterministic lock-step [Image](/uploads/documents/8/e/8/b/8e8bf3c37670c50deb25e9aa12f06fc0/p20_3.jpg) New input data Misprediction!!! State is dirty!  ## Doing