IT이야기2015. 3. 14. 10:05

요즘 웹 기술은 너무 많이 변해서 HTML 에다가 PHP + MySQL + Apache 만으로 모든것을 하던 10년전과 너무 바뀐것 같다. 이젠 내가 읽어도 뭔말인지 모를 내용이 너무 많다. 머리가 안돌아가는지 세상이 너무 빠른건지...


스포카 서버의 구조

http://spoqa.github.io/2011/12/24/about-spoqa-server-stack.html


빠른 프로토타이핑을 위한 도구 소개

http://spoqa.github.io/2012/01/30/rapid-prototyping.html


eventlet을 활용한 비동기 I/O 프로그래밍

http://spoqa.github.io/2012/02/13/concurrency-and-eventlet.html


파이썬 코딩 컨벤션

http://spoqa.github.io/2012/08/03/about-python-coding-convention.html


Python 기반의 웹서비스 개발 환경 구축 방법

http://spoqa.github.io/2013/02/20/python-development-environment.html






Posted by 쁘레드
IT이야기2015. 3. 14. 05:57

저도 Drupal을 많이 이용하긴 했는데, Raspberry Pi를 cluster로 묵어 가방속에 들어가는 data center를 만든 사람이 있네요.

http://www.midwesternmac.com/blogs/jeff-geerling/introducing-dramble-raspberry

https://github.com/geerlingguy/raspberry-pi-dramble

Raspberry Pi Dramble

A cluster (Bramble) of Raspberry Pis on which Drupal will be deployed using Ansible.

Raspberry Pi Dramble - Hero Image

Read the rest of this README and the official Dramble Wiki for more information about the Dramble.

Why

I'm doing presentations on Ansible, and how easy it makes infrastructure configuration, even for high-performance/high-availability Drupal sites. WiFi/Internet access is spotty at most conferences, so deploying to AWS, DigitalOcean, or other live public cloud instances that require a stable Internet connection is a Bad Idea™.

Deploying to VMs on my own presentation laptop is an option (and I've done this in the past), but it's not quite as impactful as deploying to real, live, 'in-the-flesh' servers. Especially if you can say you're carrying around a datacenter in your bag!

A cluster of servers, in my hand, at the presentation. With blinking LEDs!

Specs

  • 24 ARMv7 CPU Cores
  • 5.4 GHz combined compute power
  • 6 GB RAM
  • 96 GB microSD flash-based storage
  • 1 Gbps private network

Getting the Pis (and other accessories)

Many people have asked for a basic list of components used in constructing the Dramble, or where I found particular parts. In the Wiki, I've added pages listing the following:

---------------------------------

삼성 전무출신의 김규호씨도 Iphone과 Raspberry Pi로 엄청난 물건을 만드셨네요. 진정한 난방열사이신듯.

http://www.slideshare.net/KyuhoKim/

kkh_2_800

김규호 씨가 아파트 난방 밸브에 설치한 ‘라즈베리파이’ 보드와 온도 센서, 무선인터넷 장비.

kkh_1_800

집 안 난방용 온수의 온도를 웹브라우저에서 실시간으로 볼 수 있도록 했다.


----------------------------------

퀄컴도 값비싼 dragon를 계속 공급하고 있습니다.

http://www.pcworld.com/article/2896332/qualcomms-raspberry-pilike-computer-has-wireless-capabilities.html


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Posted by 쁘레드
IT이야기2015. 3. 14. 01:57

타이어에서 생기는 마찰열을 다시 에너지로 바꿀수 있을까? 좀 sci-fi 같은데... 이런 뉴스를 계속 흘려야 광고가 되겠지요. 중저가 타이어중에서는 GT가 전 젤 좋다고 생각하고 있습니다.


---------------------

Goodyear's working on an energy-harvesting tire

It's a fundamental principle of physics that when you use energy, say to run an electric car, some of it is lost. Companies have tried to overcome this by installing hardware that harvests this lost heat, most famously in regenerative breakingGoodyear is hoping to do a similar thing with tyres, dreaming up a product that could, theoretically, convert the heat generated from the friction of movement back into power for the battery.

The romantically named BHO3 would work in one of two ways. Either, the company would add in thermoelectric materials that could absorb heat as the rubber rolls along the road. Alternatively, it could use a piezoelectric substance that would generate power when compressed. Unfortunately, such technology only resides in the imagination of Goodyear's design team and isn't expected to exist for another 15 years. Hopefully, before then, Elon Musk will have gotten laser-powered hover vehicles to the point where we can all buy one.







Today’s Trading

Previous close25.47
Today’s open25.34
Day’s range25.05 - 25.62
Volume726,187
Average volume (3 months)3,799,324
Market cap$6.8B
Dividend yield0.96%
Data as of 12:45pm ET, 03/13/2015

Growth & Valuation

Earnings growth (last year)+285.09%
Earnings growth (this year)+3.14%
Earnings growth (next 5 years)+11.03%
Revenue growth (last year)-7.18%
P/E ratio2.9
Price/Sales0.42
Price/Book1.87

Competitors

 Today’s
change
Today’s
% change
CTBCooper Tire & Rubber...-0.19-0.49%
TWITitan International ...-0.26-2.55%
--Pirelli & C SpA+3.76+40.60%
Data as of 12:57pm ET, 03/13/2015

Financials

Next reporting dateApril 24, 2015
EPS forecast (this quarter)$0.45
Annual revenue (last year)$18.1B
Annual profit (last year)$2.5B
Net profit margin13.52%

Profile

Sector
Consumer Durables
Industry
Automotive Aftermarket
Chairman, President &
Chief Executive Officer
Richard J. Kramer
Senior Vice President-
Global Operations
Gregory L. Smith
Corporate headquarters
Akron, Ohio

Forecasts


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Posted by 쁘레드
IT이야기2015. 3. 14. 01:49

한국만큼 시험으로 사람을 판단하고 관리하려는 사회가 있을듯 싶다. 이런것으로 지표를 메기면 Top10안에는 한국이 들듯. 시험이 나쁜건 아니지만, 결국 암기위주의 교육으로 갈것이 뻔하고, 시험 시스템를 공정하게 관리할수 있을것이냐는 의문도 생기도.


한국에서 회사다닐때 한국은 SW회사가 거의없기때문에 SW엔지니어(+프로그래머)의 역량을 평가하는 잣대를 생각하느라 매니저들이 고민이 많았죠. 어떤이는 매주 codeline을 계산하기도 하고, 어떤이는 출퇴근시간, 어떤이는 문서개수, 어떤이는 CR의 개수... 다 의미는 있지만 주요한 factor는 아닌것인데. 그래서야 한국 공대기피현상이 낳아지겠냐는


가장 좋은방법은 교육 program을 많이 만들고 업무시간에 스스로 원하는 교육을 듣게하고 그 교육속에서 교육내용으로 평가하고, 원하는 프로젝트도 스스로 선택해서 일하게 하면 빠르게 변하진 않아도 점점 좋아질텐데. 단순반복 노가다를 장기간 시키면서 SW역량이 부족하다고 말하는 것은 뭔가 모순이다는 것을 왜 모를까. 


이런 뉴스보면 어린애들은 SW했다가 50살에도 시험보고 있어야 겠구나 생각할테니 이공대 기피현상은 더 심해질텐데. 이런 식으로 SW인력을 관리하겠다고 정해진다면 이것은 삼성 뿐만아니라 한국 SW의 위기입니다.


클리앙 댓글이 재밌네요.

http://clien.net/cs2/bbs/board.php?bo_table=news&wr_id=1954069


---------------

[아시아경제 손선희 기자]삼성전자가 소프트웨어 개발 업무를 담당하는 S직군 직원을 대상으로 개발 역량을 평가하는 한편 부족할 경우 승진에서 제외시키고 더 나아가 타 직군으로 옮기는 강도 높은 인적 쇄신에 나섰다.

13일 삼성 내부 문건에 따르면 삼성전자는 지난해부터 S직군을 대상으로 'SW자격검정'을 실시하며, 올해 내 미취득자에 대해서는 타 직군으로의 전환을 검토할 뿐 아니라 승격에서도 제외할 방침이다. 

올해 1월 기준으로 총 2만9000여명의 국내 S직군 인력 중 약 80%가 자격 취득을 완료했다. 남은 20%의 직원은 기한 내에 검정시험을 통과하지 못하면 '퇴출'을 피하기 어려울 것으로 보여 결과에 따라 많게는 수천 명 단위의 인력 조정이 예상된다.

S직군에 대한 삼성전자의 이 같은 조치는 주력 사업부 중 하나인 무선사업부 소속 직원들을 대상으로 '1등 DNA'를 유지하려는 기조와도 일맥상통한다. 무선사업부는 매년 인력 일부를 타 사업부 혹은 아예 IM(ITㆍ모바일)부문 밖으로 순환 재배치해 왔다. 회사 측에서는 "무선 사업부의 1등 DNA를 타 사업부에 전파하자는 취지"라고 설명하지만 직원들 내부에서는 "낮은 고과를 받자마자 무선사업부에서 쫓겨났다"는 하소연이 뒤따른다.

이번 S직군 대상 SW자격검정은 삼성전자 직원 교육을 담당하는 사내 조직인 인재개발센터 첨단기술연수소가 제공하는 'SW기술역량 검정 툴'을 활용해 진행됐다. 복합적인 조건의 개발 상황이 제시된 한 개의 문항을 세 시간동안 푸는 형태로, 소프트웨어 개발의 기본인 알고리즘에 대한 이해와 기초적인 코딩을 얼마나 해낼 수 있느냐에 초점이 맞춰져 있다. 

S직군은 2011년 10월 SW 강화를 목적으로 신설된 직군으로 삼성전자가 제조하는 기기에 탑재될 소프트웨어 개발을 담당해 왔다.

손선희 기자 sheeson@asiae.co.kr

Posted by 쁘레드
IT이야기2015. 3. 13. 03:04
QCOM에게는 안좋은 소식이네요. MSM은 삼성에게 까이고, Modem은 Apple에게 까이면 주요 매출 소스가 없어지게 됩니다.
Intel도 매출은 늘릴수 있지만 순익은 별로 없을거라고 하고, 최고 승자는 역시 경쟁붙여서 좋은 가격으로 납품받는 슈퍼갑 Apple이 되겠네요.
Intel은 modem만으로 끝내지 않고 AP도 같이 팔려고 할꺼라는데, Apple것이 너무 좋아 쉽게 넘어가지는 않을것 같고, 다만 Apple칩을 Intel Fab에서 생산하는것은 가능할지 모르겠네요. 삼성 견제도 되고요.

기사에 포함된 supplier 그래픽이 너무 좋네요.



Source : http://seekingalpha.com/article/2995886-apple-selects-an-intel-modem-a-glimpse-of-the-future


Summary

  • The report that Apple has chosen an Intel modem for use in a future iPhone has encouraged Intel supporters.
  • However, modem sales do not represent a “foot in the door” for Intel to sell mobile SOCs to Apple.
  • Instead, it's an example of commodity chipmakers fighting for second tier supplier status to a major mobile device maker.

Venture Beat's report on March 10 that an Intel (NASDAQ:INTC) modem had been selected by Apple (NASDAQ:AAPL) for an upcoming iPhone targeted at emerging markets had Intel bulls salivating, but the celebration was short lived, after Intel lowered its guidance for the March quarter. The modem selection, if it goes through, does offer a glimpse of the future for Intel and Apple, but perhaps not the future Intel bulls have in mind.

Commodity Mentality

One of the things I've noticed in writing for SA for the past almost two years is that fans of Intel also tend to be fans of other large chipmakers, especially Qualcomm (NASDAQ:QCOM) and Nvidia (NASDAQ:NVDA). It's understandable in retrospect, since they share a common business model as commodity IC manufacturers. Writing in 2013, it struck me as odd, since it was apparent to me that the companies were on a collision course with business objectives that were ultimately mutually exclusive.

With the news that Apple had selected an Intel LTE modem rather than going with its long-time modem supplier Qualcomm, we witnessed just the sort of collision I had in mind. But the ramifications are greater than just the competition between Intel and Qualcomm.

The manufacture of systems on chip (SOCs) for mobile devices continues to shift from the commodity paradigm (Intel, Qualcomm, Nvidia) to the custom paradigm pioneered by Apple in the A4 SOC for the first iPad. More importantly for the commodity processor makers, consumer interest has continued to shift away from commodity PCs in favor of mobile devices. Intel's revised guidance for the March quarter was due primarily to declining PC sales, which Intel attributed to slower than expected business and XP refresh sales.

But PC sales have suffered for some time as a result of competition from mobile devices, and the increasing capability of mobile devices has many consumers and businesses thinking outside of the PC box. At the same time, Apple's success with the latest iPhone 6 and 6 Plus has made the custom paradigm dominant in the mobile device world. This has exerted a Darwinian survival pressure on commodity IC makers in general, and the industry has evolved in order to try to adapt to the new paradigm.

One of the features of this evolution has been considerable consolidation in the industry, with the Freescale/NPX merger being only the most recent. This was proudly highlighted in a chart by Intel CFO Stacy Smith for their annual Investor Meeting:

(click to enlarge)

Intel's naiveté about what the chart truly portends is almost touching. One of the very important survival strategies for the commodity IC makers is to become a preferred supplier of one of the big mobile device makers such as Apple. Here, commodity ICs still have a role to play by supplying functionality that hasn't been incorporated into the SOC.

But it's a role that must get smaller with time, as more and more functionality becomes integrated into the SOC. Thus the decline in the number of suppliers highlighted in the Intel chart.

The shrinking role for secondary commodity ICs has been masked by a number of near-term effects, not the least of which is the sheer growth in the mobile device business since the advent of the iPhone. Another effect has been the incorporation of greater functionality into smartphones themselves, which has often mandated accessory ICs for things such as motion sensors and communications devices such as the NFC radios incorporated into iPhone 6 to support Apple Pay.

The potential loss by Qualcomm of Apple's modem business brings into focus the ongoing pressure on commodity IC makers. The debut of Samsung's (OTC:SSNLF) Galaxy S6, which will use a Samsung custom SOC rather than a Qualcomm SOC provided the confirmation of the forward guidance provided by Qualcomm management in their fiscal 2015 Q1 earnings release:

Looking ahead, we have lowered our revenue outlook for our semiconductor business for the second half of the fiscal year and lowered our EPS expectations.

These changes are largely driven by the effects of:

  • A shift in share among OEMs at the premium tier, which has reduced our near-term opportunity for sales of our integrated Snapdragon processors and has skewed our product mix towards more modem chipsets in this tier (Apple iPhone 6 impact)

  • Expectations that our Snapdragon 810 processor will not be in the upcoming design cycle of a large customer's flagship device(Samsung Galaxy S6 impact)

  • Heightened competition in China (MediaTek, Rockchip, Spreadtrum, Intel)

Comments in bold parentheses are mine.

Qualcomm guided to effectively flat revenue for its fiscal 2015, based on the above listed effects. As the progenitor of the custom SOC paradigm shift, and the most successful, Apple has pushed Qualcomm into second-tier status as an accessory IC supplier, and forced the competition with Intel. This is not a big win for Intel. Intel wants to be the SOC supplier for the mobile devices of the world, just as it has been the CPU supplier for the PCs of the world. This is the Intel business model that so many still believe in.

Winning on Performance and Cost?

Those who believe in the continuing viability of this business model must assume that Apple will eventually choose Intel for its mobile devices for the same reasons it chose Intel for its personal computers: superiority in performance and cost.

This is an argument by analogy that doesn't hold up under close scrutiny. The superiority in performance and cost of x86 over PowerPC was a direct consequence of the small scale of PowerPC production. The revenue generated by PowerPC was never large enough to allow the manufacturers, IBM (NYSE:IBM) and Motorola, to keep up with Intel either in processor design or in manufacturing.

Apple had entered into the PowerPC alliance in the hope of developing a superior processing architecture to Intel. When it became clear that the PowerPC alliance had failed in that key objective, Apple had no choice but to switch to Intel.

In Intel vs. ARM, the tables have been turned, with the benefits of economies of scale favoring ARM architecture devices. Furthermore, the fabless model prevalent in the ARM world demonstrates that it's not necessary for fabless semiconductor makers to own the means of production. The ARM foundries can spread the benefits of production scale across multiple customers.

The success of the fabless model has enabled Apple to produce its own SOCs without significant cost penalty relative to commodity makers such as Qualcomm or even Intel. Although not everyone has accepted my assertionthat Intel Architecture is significantly cost-disadvantaged relative to ARM, I've not seen anyone assert that Intel can offer a cost advantage without some form of marketing subsidy.

So if Intel cannot offer a cost advantage to Apple, can it at least offer a performance advantage? I wouldn't completely rule this out, since it depends on the resourcefulness and creativity of the systems designers at Intel, which I wouldn't want to minimize. However, I think this is a low probability shot, for a number of reasons.

Intel's performance advantage as a result of manufacturing is likely to be short lived. Certainly, Apple's A8x has been demonstrated to be superior to Bay Trail fabricated on Intel's 22 nm process. Even as Intel began fabricating Cherry Trail (now Atom X5, X7) on its more advanced 14 nm process, Samsung was in production on its own Exynos SOCs, and probably Apple's next generation A-series, on 14 nm FinFET as well.

On the processor design front, Apple has demonstrated that it has a very talented design staff, along with the advantage of using a more modern and efficient CPU architecture in ARM. I doubt that there is any design advantage that Intel can achieve that Apple will not match with its own innovations.

Even if Intel could show some marginal performance advantage for Atom X5-7 compared to Apple's next A-series, Apple would still be reluctant to make a switch. The final advantage that Apple derives from its custom SOCs is that they're... custom. Customization allows Apple to tailor the SOC to the needs of the device. The better integration and efficiency afforded by SOC customization is part of what makes Apple mobile devices work so well. This is perhaps the most important consideration. Apple's custom SOCs give it an important discriminator in the highly competitive mobile device market.

Regardless of whom Apple chooses for its modem supplier, the winner will not be Intel, or Qualcomm, but Apple. Apple will get the best possible product at the lowest possible price, with suppliers falling all over themselves to get and keep Apple's business.

Posted by 쁘레드
IT이야기2015. 3. 8. 06:47

캠코더를 업그레이드 할까해서 좀 지난것도 괜찮고. 적당한 가격과 좋은 화질로 찾다보니 결국 마지막에 머무른곳은... Sony 4K Camcorder.

3/22 부터 판다는데 보너스 받으면 이거 하나 사야하는걸까? ㅋㅋㅋ


Sony 4K HD Video Recording FDRAX33 Handycam Camcorder

http://www.amazon.com/Sony-Recording-FDRAX33-Handycam-Camcorder/dp/B00R5LH9G0/ref=sr_1_1?s=electronics&ie=UTF8&qid=1425764269&sr=1-1&keywords=Sony+4K+HD+FDRAX33


Modelsensor sizeWIFIXAVCvalueComment
Sony 4K HD FDRAX33 1/2.33 inyesyes$9994K support. Best quality, best value
Panasonic HC-X9201/2.33 inyesno6503 MOS, 2012 model
Sony Handycam HDR-PJ8101/3.95 inyesno$800The 2014 Sony HDR-PJ810b is an update to the 2013 HDR-PJ650
Panasonic HC-V7201/2.33 inyesno$500best entry camcorder



------------------

2015/4/10 추가

1인치 센서, 4K 비디오, 16배줌, 5축 손떨방, 가격까지 생각하면

Panasonic FZ1000이 짱이네요. 요즘 $700 정도까지 내려왔네요.






Posted by 쁘레드
IT이야기2015. 3. 4. 07:31

아시는 분이 주변에 막연히 미국으로 가서 일하고 싶다는 분이 있어서 보낸 메일.


-------------------

우선 가장 현실적인 방법은 (하고 계실거라 생각되는데) 한국에 있는 외국계회사부터 지원하시는게 좋겠습니다. 외국계 기업에서 일하게되면 본사가 있는곳이나 다른 site로 갈수 있는 확률이 높아집니다. 미국회사라면 L비자=주재원비자로 쉽게 비자를 해결해줍니다.


미국에 있는 회사에 지원하는 것은
xx전자 연구원 정도면 미국에서 엄청 탐내할것이 분명한데, 미국진출의 가장 큰 문제는 VISA에요. H1B가 취업비자인데, 4월1일부터 신청을 받거든요. 다닐 회사가 스폰서를 해서 신청해서 받게되면 10월 1일부터 일할수가 있고요. 미리 스폰서해줄(다닐회사)를 찾아서 신청해야하거든요. 요즘 경기가 좋아서 신청후 2-3일이면 쿼타 끝나요.그래서 미국회사에 지원하는 젤 좋은 시기는 년초에 구직을해보는 거구요. 그것도 확률이 낮아요. 뽑아줄 회사가 10/1부터 일할사람을 원하지 않거든요.

회사가 특별하게 E비자를 알아봐주는 경우가 있습니다. 좋은 학위나 특허등 아주 특별난 사람은 그렇게해주고요.

일할수 없는 비자없이는 인터뷰얻을 확률은 낮지만, 우선 미국회사중 아시는 큰 회사에 이력서를 인터넷으로 넣어보세요. 운좋게 전화인터뷰라도 잡히면 인터뷰전에 전화로 제가 약간의 조언을 드릴수는 있습니다. 미국에 넣는 이력서는 생년월일은 지우시는게 좋습니다. 성별/나이/종교/정치 등 알필요없는 것을 쓰는 저의에 대해서 좋게보진 않습니다.(그런것으로 뭘 해보려는 듯 보여 오히려 불이익)

그리고 미국에 정말로 진출하고 싶으시다면, 영어공부도 꾸준히 하시고, 이미 석사는 있으시지만 석서과정(master) 진학계획을 세우셔도 좋습니다. 비용과 시간은 있지만, 이 경우는 job찾을 확률이 90%가 넘어요.미국내에서 잡을 찾는것과 밖에서 찾는것은 틀리고요, master후에는 1년간 일할수 있는 자격이 주어져서 비자문제도 우선 자유로워집니다. master는 2년, 빠르면 1.5년에도 끝낼수 있습니다.

Resume에 대해서
간단하고 잘 쓰셨는데, 경력분야는 저랑 달라서 minor한 조언만 드리면
  1. 생년월일은 지우시고
  2. 전화번호는 international하게
  3. 경력의 첫째줄을 장식하는 VS860, LG-P860 등 모델번호를 나열하는것은 impact가 없어보입니다. review는 짧게작성해도 다 읽질않아요.
  4. Training도 최신것으 맨 위로, 일관성이 있게.
감사합니다. 좋은 소식이 많으시길~
Fred



미국 진출을 준비하시는 사람들, 미국으로 오신 분들이 자주 들어가는 사이트입니다. 여기에 비슷한 고민을 하는 한국분들이 많이 계시고 그에 대한 답변도 들을수 있습니다. 가입이 필요없어 익명성이 있어 모든 내용을 신뢰할수는 없겠지만요. 대부분 tech쪽 종사자가 많아 차분히 읽어보시면 도움이 되실겁니다.


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