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AWS 提供 Windows 上的 Deep Learning AMI

有一些 Windows 上的東西就可以直接開起來跑了:「Announcing New AWS Deep Learning AMI for Microsoft Windows」。

目前支援 2012 R2 與 2016:

Amazon Web Services now offers an AWS Deep Learning AMI for Microsoft Windows Server 2012 R2 and 2016.

然後 driver 與常用的東西都包進去了:

The AMIs also include popular deep learning frameworks such as Apache MXNet, Caffe and Tensorflow, as well as packages that enable easy integration with AWS, including launch configuration tools and many popular AWS libraries and tools. The AMIs come prepackaged with Nvidia CUDA 9, cuDNN 7, and Nvidia 385.54 drivers, and contain the Anaconda platform (supports Python versions 2.7 and 3.5).

Mark Callaghan 講最近的 MySQL 的行銷活動...

Mark Callaghan 這篇倒是沒提到什麼技術的東西,主要是講最近 MySQL 的兩大 conference,一個是 OracleOracle Open World,另外一個是 PerconaPercona Live Amsterdam 2016,然後用了 benchmarketing 這個酸酸的詞 XDDD:「Peak benchmarketing season for MySQL」。

裡面有些也很有趣的東西:

My joke is that each of these makes a different group happy: performance -> marketing, usability -> developers, manageability -> operations, availability -> end users, efficiency -> management.

另外提到了 RocksDB 建出來的 MyRocks 在 memory fit 時可能會比 InnoDB 還要好:

One last disclaimer. If you care about read-mostly/in-memory workloads then InnoDB is probably an excellent choice. MyRocks can still be faster than InnoDB for in-memory workloads. That is more likely when the bottleneck for InnoDB is page write-back performance. So write-heavy/in-memory can still be a winner for MyRocks.

這就有趣了,找個時間來測試看看...

Stack Overflow 公開 2016 的架構

Stack Overflow 公開了 2016 年現在的系統架構:「Stack Overflow: The Architecture - 2016 Edition」。

Stack Overflow 的重要性可以從前陣子 Twitter 上流傳的一張讓大家笑的很開心的圖看出來:

身為目前「程序猿」(!) 最重要的 debug (!!) 資料來源,而且是目前少數用 ASP.NETMicrosoft SQL Server 作為網站與資料庫的架構,並且是放在傳統 IDC 機房而非 Cloud Service 的知名網站,大家也很好奇他們是怎麼堆出來的。

上次公開 Stack Overflow 的系統架構是 2013 年年底了 (參考當時寫的「Stack Overflow 的現況...」這篇),這份更新距離上次兩年多了,也有很多可以交叉比較的事情。

比較有趣的是效能的提昇的說明,本來以為會是說因為我們改善程式碼的效率或是其他類似的理由,結果居然直接說是因為買新機器了 XDDD:

You may be wondering about the drastic ASP.Net reduction in processing time compared to 2013 (which was 757 hours) despite 61 million more requests a day. That’s due to both a hardware upgrade in early 2015 as well as a lot of performance tuning inside the applications themselves.

另外覺得比較有趣的是 CiscoASR-1001ASR-1001-x,不知道是什麼理由選擇這個系列,改天找 Cisco 的朋友問問看好了...

另外他們的 Websockets 也拿來做有趣的事情:

We use websockets to push real-time updates to users such as notifications in the top bar, vote counts, new nav counts, new answers and comments, and a few other bits.

另外他們也發現有些瀏覽器連線已經連 18 個月了 (喂喂),也許應該去看一下人是不是還活著:

Fun fact: some of those browsers have been open for over 18 months. We’re not sure why. Someone should go check if those developers are still alive.

我猜是 production server 上開瀏覽器查資料後沒關掉,就一直連著...

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