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  • career advice for PhD scientist seeking to program?

    - by C SD
    I'm largely a self-taught programmer. In fact, I first started programming about half way through biophysics grad school, and even though I think I've done some pretty nice work, I've never worked as part of a 'serious' development team that had more than one or two other developers (and I wouldn't hesitate to call them equally inexperienced in software development as a profession). After finishing my PhD I applied to Google, on a lark, since I had some confidence in my abilities, if not necessarily my experience, and I was hoping to maybe slip in and absorb all the experience and talent I'd be surrounded with and become productive enough, quickly enough, that they wouldn't immediately regret their decision. I was excited to actually get invited to interview up at Mountain View (this was ~ mid 2008). Overall, my memory of the interview was very positive, but after close to a three month wait (is that normal?) they ended up turning me down. I wasn't too surprised or disappointed (aside from the uncomfortably long wait) given my unusual background and admitted lack of experience. I decided to continue as a postdoc, but focus on improving my skills rather than doing research. I've done about three years of that, and my honest assessment is that I've learned a ton more, but I really need more of a peer group to maintain or accelerate my growth. Google invited me to interview again about eight months ago, and the interview process went even better than the first time around (I thought), though they again declined to give me an offer. I have to admit this second rejection was much more discouraging. They had insisted I interview even after I mentioned to them that a move on my part was unlikely given that I had bought a house, gotten married, etc. since the first interview. I guess I was hoping they'd at least give me an offer that I could parlay into a more conventional, but still interesting, programming position close to home. So here I am, going on my third year out of grad school, a glorified postdoc and I'm starting to get pretty discouraged. Even though I could technically get 'back-on-track' for a career in science, I have been focusing the vast majority of this time on gaining programming experience rather than on research and publications. The problem is, whenever I look, most job listings have requirements that seem impossibly grandiose and I hesitate to apply. That, or the job/project seems incredibly dull. Ironically, applying to Google struck me as less intimidating. I suspect that either most people are just a lot less realistic than I am when it comes to assessing how long it will take for them to get up to speed, or they don't care; my fear is that I'm just woefully unqualified for any interesting, well paying work. IE: I'm confident I could switch fully back into C++ mode with a couple weeks work (I mostly use C,Python,C# daily) but I don't list myself as being 'proficient' in C++ on my CV, or applying for jobs that 'require' such knowledge. The few applications for which I did feel I was a legitimately good match have not elicited a response. I suspect the following things are potential problems with my application/CV and I would like feedback on: I don't have a CS degree. My BS was in biochemistry and molecular biology, my PhD in biophysics. I took a undergrad and grad level CS course at UCSD and completely killed them, but I don't know how to translate that to my CV effectively. I have a PhD, but it's not in CS... I've been debating if I should remove it from my CV, and wether or not it would then be misleading to list at least some of those years as some kind of 'programming' job (in many respects it was). I think there are sometimes strong stigmas associated with 'self-taught' programmers. I am certainly one of those. I even recognize that some of those stigmas hold a hint of truth, but I really do want to be an asset to a team. How do I communicate that even though I have been largely self-directing for ~8 years I can still take marching orders when needed? Do I just say so outright? Should I just become a lot less scrupulous about the whole process? anecdote: I have a friend who applied for positions where he completely fudged his qualifications to get past the first culling. He was much more honest and forthcoming about his actual qualifications when contacted and he still managed to get invited to a couple of interviews and even got some offers. His balls are larger than mine though.

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  • Can you recommend a robust OpenAPI 2.0 provider?

    - by larsks
    Help me find a robust OpenID 2.0 provider! We're looking at various SSO solutions for our organization, and I would like to suggest OpenID as a viable option, since (a) there is good consumer support in a number of web applications, and (b) it's simpler to implement than Shibboleth, which is the alternative technology. However, this requires that we find a robust OpenID provider, ideally one meeting the 2.0 specification. The only solutions I've come across so far are: Atlassian Crowd This looks great, although the $4000 price tag may make it a tough sell. Community-ID This looks like an interesting idea, but I'm not sure the project quality is at a suitable level (yet). In particular, it's not clear if LDAP support actually works (which will be a requirement in our environment). Have you implemented OpenID in your environment? What are you using? Have you selected an alternative SSO technology?

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  • Running own DNS Server for learning purpose

    - by sundar22in
    I would like to run my own DNS server in my laptop for learning purpose. I recently used Google Public DNS and liked it. I wanted to build some thing similar and small for my web browsing. What I vaguely dream of is to use my own DNS server as Primary DNS server and Google public DNS as secondary DNS server. I would like to build my own DNS server gradually by editing the configuration files (If it can be automated it will be great, but have no clues there). Sometimes it sounds like a stupid idea to me, but I am fine with editing config file for each site I want to add to my DNS server. Any pointers/suggestion is welcome.

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  • Problems compiling with Quickly

    - by espectalll123
    Welcome to another of my questions about compiling! :P So, after days of stress trying to compile my app, first manually, after porting the project to Quickly, I decided to create the project from scratch using this time Quickly. Now I've finished the app, it works great using quickly run and I haven't added any new file, just removed, replaced or modified. But it can't be compiled using quickly package --verbose --extras... why, if there doesn't seems to be errors related with my project? The fail happens because python-mkdebian doesn't haves enough parameters to work. The terminal output (in Spanish): running install_egg_info Writing /tmp/tmpsT6Pms/virtuam-0.1.egg-info WARNING: the following files are not recognized by DistUtilsExtra.auto: help/C/figures/icon.png help/C/index.page help/C/preferences.page help/C/topic1.page virtuam.desktop.in Traceback (most recent call last): File "/usr/bin/python-mkdebian", line 368, in <module> egg = get_egg_info() File "/usr/bin/python-mkdebian", line 35, in get_egg_info k, v = l.strip().split(': ', 1) ValueError: need more than 1 value to unpack Ha ocurrido un error al crear el paquete Debian ERROR: no se puede crear o actualizar paquete ubuntu Error: la orden package ha fallado Cancelando

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  • How do I apply WinHTTP proxy settings domain-wide?

    - by Oliver Salzburg
    We're already configuring Internet Explorer proxy settings through group policy and it works great. Sadly, I've recently run into multiple issues where those settings are ignored by certain services. I realized that these service have one thing in common. They use WinHTTP, which has its own proxy settings. Now I'm asking myself how to apply those across the whole domain. I realize that I could create a logon script and simply run netsh winhttp import proxy source=ie, but, from experience I know that these settings require a reboot to take effect. So this wouldn't help me at all in a logon script. So, how can I do it?

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  • How to prevent a URL in an email I send from being auto-linked by the recipient's email client?

    - by gilly3
    When I type a URL into an email in Outlook, it automatically converts it to a hyperlink. I can, of course, remove the hyperlink from the context menu: But, then when the email is received and when I view it in my Sent Items folder, the urls are again converted to hyperlinks. How can I prevent this? Embedded images are no good because the URL must be copy and pasteable (among numerous other reasons that this approach is not great). And it must retain the formatting applied when I send it. This answer on stackoverflow shows a good trick for preventing auto linked urls when sending an email programmatically, but I'm looking for a way to do this from the UI. Perhaps there a way to edit the HTML of the message before it is sent? If not, I guess I'm off to write an Outlook Add-in.

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  • What is the correlation between programming language and experience/skills of their users?

    - by Petr Pudlák
    I'm sure there is such a correlation, because experience and skill leads good programmers to picking languages that are better for them, in which they're more productive, and working in a language forms how programmers think and influences their methods and skills. Is there any research or some statistical data of this phenomenon? Perhaps this is not a purely academic question. For example, if someone is starting a new project, it could be worth considering a language (among other criteria of course) for which there is a higher chance of finding or attracting experienced programmers. Update: Please don't fixate on the last paragraph. It's not my intention to choose a language based on this criterion, and I know there are other far more important ones. My interested is mostly academic. It comes from the (subjective) observation and I wonder if someone has researched it a bit. Also, I'm talking about a correlation, not about a rule. Sure there are both great and terrible programmers in every language. Just that in general it seems to me there is a correlation.

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  • Exalytics Increases Customer Revenue, and Saves Time, Risk & Cost

    - by Mike.Hallett(at)Oracle-BI&EPM
    We are getting some great proof point stories now from our customers who are succeeding with the Exalytics in-memory system for OBI and Essbase.  See below for some recent testimony: San Diego Unified School District Harnesses Attendance, Procurement, and Operational Data with Oracle Exalytics, Generating $4.4 Million in Savings: according to independent assessment by Mainstay Salire, the district is on track to achieve substantial benefits from the Oracle Exalytics solution, including an $8.25 million increase in attendance revenue, $75,000 a year savings in operational efficiencies, and $1 million in hardware cost avoidance. NilsonGroup chooses Oracle Exalytics In-Memory Machine as their solution to access critical data to keep its stores competitive with real-time Mobile BI: it took only “3 days to get up and running” with Exalytics.  Video Nykredit, in the Danish Financial Sector, describes their experiences from testing the Exalytics Business Intelligence Machine: “it was up and running within 4 days” with “more intuitive dashboards” and “up to 70x better performance” and “cheaper maintenance and lower total cost of ownership”. Video Sodexo chose Oracle Exalytics as their business analytics platform; accelerating Essbase “more than 8x” performance for more than 2,000 Excel-addin users, “significantly changing how people in information management now deal with data”.  Video Polk, Savvis, Nykredit, and Key Energy describe testing of the Oracle Exalytics In-Memory Machine: to “reach more users than we ever have before”, “to fly through the data without impeding the analytic process”, “drive our enterprise groups into this tool instead of having departmental solutions”, and the “advanced visualisation this product enables”.  Video

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  • links for 2010-06-16

    - by Bob Rhubart
    Automating Enterprise Reporting with SOA and Oracle Business Intelligence Publisher In the latest article in the Enterprise Solution Cookbook series, authors John Chung and Harish Gaur take you step-by-step through the development of an automated reporting platform using Oracle's SOA Suite, WebCenter, and Business Intelligence Publisher. (tags: soa enterprise2.0 architect entarch bpm oracle otn) @ORACLENERD: Job: Infrastructure Technical Architect Oracle ACE Chet "ORACLENERD" Justice shares the 411 on a great new gig for the right architect.  (tags: jobs employment infrastructure architect oracleace) Andrew Ness: Building a training environment for RAC, ASM and Dataguard on OEL 5.4 "In all the environments I've worked in where Oracle DBAs are involved, " says Ness, "they would have chewed my arm off to have this level of control over where their data lives." (tags: oracle grid database dba) Chris Quenelle: Virtualization terms UNIXy Goodness blogger Chris Quenelle dives into Wikipedia to compile this short but valuable glossary of virtualization terms.  (tags: solaris hypervisor virtualization) William Vambenepe: CMDB in the Cloud: not your father's CMDB "Most [customers] will be dealing with a mix of old-style and Cloud applications and they’ll be looking for a unified management approach. This helps CMDB incumbents. If you doubt the power to continuity, take a minute to realize that the entire value proposition of hypervisor-style virtualization is centered around it." -- William Vambenepe (tags: oracle otn cloud virtualization) Merv Adrian: Oracle Exadata: a Data Management Tipping Point "In this second version of its newest platform, Oracle not only provides the latest technology in each part of the data-management architecture, but also integrates them under the full control of one vendor, with a unified approach to leveraging the full stack." -- Merv Adrian (tags: oracle exadata database)

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  • Oracle Solaris at OpenWorld Tokyo 2012

    - by Markus Weber
    Oracle OpenWorld Tokyo will open its doors on Wednesday, April 4 2012, until Friday, April 6 2012, in Roppongi.I've you been in Tokyo as a Gaijin, or foreigner, you know exactly where that it. Many of Oracle's top executives will be there, including Larry Ellison, Mark Hurd, and John Fowler. The keynotes that they are covering will be very interesting, for sure. Now, whether you will actually be there, or not, you might still find it interesting that several great Solaris-related sessions will be held there, especially as part of the "Oracle Develop" track, such as: "Oracle Solaris 11 - Developers Need To Know" "How to build high performance and high security Oracle Database environment with Oracle SPARC/Solaris" "Oracle Solaris Tuning Contest" "IT Assets preservation and constructive migration with Oracle Solaris virtualization" And of course John Fowler's keynote "Server and Storage Systems Strategy".The complete schedule in English can be found here. We hope you can make it. If not, there will always be the San Francisco one.

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  • Here Is Official GMail App For iPhones & iPads

    - by Gopinath
    Its a great day for GMail users! Few hours ago Google pushed a new GMail web user interface to all the users and now they released GMail iOS App[iTunes Link]. After delaying several years Google at last released a native GMail application of iPhone, iPad & iPod touch. In a blog post, Google says We’ve combined your favorite features from the Gmail mobile web app and iOS into one app so you can be more productive on the go.It’s designed to be fast, efficient and take full advantage of the touchscreen and notification capabilities of your device. The iOS App includes almost all the features that are found on Android version of GMail app -  users can star, label, archive, access the Priority Inbox and push notifications for new mail alerts. It also includes standard touchscreen commands like pull down to refresh and swipe to scroll emails. Go and grab the GMail App from iTunes This article titled,Here Is Official GMail App For iPhones & iPads, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • Using IIS7 as a reverse proxy

    - by Jon
    Hi All, My question is pretty much identical to the question listed but they did not get an answer as they ended up using Linux as the reverse proxy. http://serverfault.com/questions/55309/using-iis7-as-a-reverse-proxy I need to have IIS the main site and linux (Apache) being the proxied site(s). so I have site1.com (IIS7) site2.com (Linux Apache) they have subdomains of sub1.site1.com sub2.site1.com sub3.site2.com I want all traffic to go to site1.com and to say anything that is site2.com should be proxied to linux box on internal network, (believe ARR can do this but not sure how). I can not have it running as Apache doing the proxying as I need IIS exposed directly. any and all advice would be great. Thanks

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  • Skanska Builds Global Workforce Insight with Cloud-Based HCM System

    - by HCM-Oracle
    By David Baum - Originally posted on Profit Peter Bjork grew up building things. He started his work life learning all sorts of trades at his father’s construction company in the northern part of Sweden. So in college, it was natural for him to pursue a bachelor’s degree in construction engineering—but he broke new ground when he added a master’s degree in finance to his curriculum vitae. Written on a traditional résumé, Bjork’s current title (vice president of information systems strategies) doesn’t reveal the diversity of his experience—that he’s adept with hammer and nails as well as rows and columns. But a big part of his current job is to work with his counterparts in human resources (HR) designing, building, and deploying the systems needed to get a complete view of the skills and potential of Skanska’s 22,000-strong white-collar workforce. And Bjork believes that complete view is essential to Skanska’s success. “Our business is really all about people,” says Bjork, who has worked with Skanska for 16 years. “You can have equipment and financial resources, but to truly succeed in a business like ours you need to have the right people in the right places. That’s what this system is helping us accomplish.” In a global HR environment that suffers from a paradox of high unemployment and a scarcity of skilled labor, managers need to have a complete understanding of workforce capabilities to develop management skills, recruit for open positions, ensure that staff is getting the training they need, and reduce attrition. Skanska’s human capital management (HCM) systems, based on Oracle Talent Management Cloud, play a critical role delivering that understanding. “Skanska’s philosophy of having great people, encouraging their development, and giving them the chance to move across business units has nurtured a culture of collaboration, but managing a diverse workforce spread across the globe is a monumental challenge,” says Annika Lindholm, global human resources system owner in the HR department at Skanska’s headquarters just outside of Stockholm, Sweden. “We depend heavily on Oracle’s cloud technology to support our HCM function.” Construction, Workers For Skanska’s more than 60,000 employees and contractors, managing huge construction projects is an everyday job. Beyond erecting signature buildings, management’s goal is to build a corporate culture where valuable talent can be sought out and developed, bringing in the right mix of people to support and grow the business. “Of all the companies in our space, Skanska is probably one of the strongest ones, with a laser focus on people and people development,” notes Tom Crane, chief HR and communications officer for Skanska in the United States. “Our business looks like equipment and material, but all we really have at the end of the day are people and their intellectual capital. Without them, second only to clients, of course, you really can’t achieve great things in the high-profile environment in which we work.” During the 1990s, Skanska entered an expansive growth phase. A string of successful acquisitions paved the way for the company’s transformation into a global enterprise. “Today the company’s focus is on profitable growth,” continues Crane. “But you can’t really achieve growth unless you are doing a very good job of developing your people and having the right people in the right places and driving a culture of growth.” In the United States alone, Skanska has more than 8,000 employees in four distinct business units: Skanska USA Building, also known as the Construction Manager, builds everything at ground level and above—hospitals, educational facilities, stadiums, airport terminals, and other massive projects. Skanska USA Civil does everything at ground level and below, such as light rail, water treatment facilities, power plants or power industry facilities, highways, and bridges. Skanska Infrastructure Development develops public-private partnerships—projects in which Skanska adds equity and also arranges for outside financing. Skanska Commercial Development acts like a commercial real estate developer, acquiring land and building offices on spec or build-to-suit for its clients. Skanska's international portfolio includes construction of the new Meadowlands Stadium. Getting the various units to operate collaboratatively helps Skanska deliver high value to clients and shareholders. “When we have this collaboration among units, it allows us to enrich each of the business units and, at the same time, develop our future leaders to be more facile in operating across business units—more accepting of a ‘one Skanska’ approach,” explains Crane. Workforce Worldwide But HR needs processes and tools to support managers who face such business dynamics. Oracle Talent Management Cloud is helping Skanska implement world-class recruiting strategies and generate the insights needed to drive quality hiring practices, internal mobility, and a proactive approach to building talent pipelines. With their new cloud system in place, Skanska HR leaders can manage everything from recruiting, compensation, and goal and performance management to employee learning and talent review—all as part of a single, cohesive software-as-a-service (SaaS) environment. Skanska has successfully implemented two modules from Oracle Talent Management Cloud—the recruiting and performance management modules—and is in the process of implementing the learn module. Internally, they call the systems Skanska Recruit, Skanska Talent, and Skanska Learn. The timing is apropos. With high rates of unemployment in recent years, there have been many job candidates on the market. However, talent scarcity continues to frustrate recruiters. Oracle Taleo Recruiting Cloud Service, one of the applications in the Oracle Talent Management cloud portfolio, enables Skanska managers to create more-intelligent recruiting strategies, pulling high-performer profile statistics to create new candidate profiles and using multitiered screening and assessments to ensure that only the best-suited candidate applications make it to the recruiter’s desk. Tools such as applicant tracking, interview management, and requisition management help recruiters and hiring managers streamline the hiring process. Oracle’s cloud-based software system automates and streamlines many other HR processes for Skanska’s multinational organization and delivers insight into the success of recruiting and talent-management efforts. “The Oracle system is definitely helping us to construct global HR processes,” adds Bjork. “It is really important that we have a business model that is decentralized, so we can effectively serve our local markets, and interact with our global ERP [enterprise resource planning] systems as well. We would not be able to do this without a really good, well-integrated HCM system that could support these efforts.” A key piece of this effort is something Skanska has developed internally called the Skanska Leadership Profile. Core competencies, on which all employees are measured, are used in performance reviews to determine weak areas but also to discover talent, such as those who will be promoted or need succession plans. This global profiling system brings consistency to the way HR professionals evaluate and review talent across the company, with a consistent set of ratings and a consistent definition of competencies. All salaried employees in Skanska are tied to a talent management process that gives opportunity for midyear and year-end reviews. Using the performance management module, managers can align individual goals with corporate goals; provide clear visibility into how each employee contributes to the success of the organization; and drive a strategic, end-to-end talent management strategy with a single, integrated system for all talent-related activities. This is critical to a company that is highly focused on ensuring that every employee has a development plan linked to his or her succession potential. “Our approach all along has been to deploy software applications that are seamless to end users,” says Crane. “The beauty of a cloud-based system is that much of the functionality takes place behind the scenes so we can focus on making sure users can access the data when they need it. This model greatly improves their efficiency.” The employee profile not only sets a competency baseline for new employees but is also integrated with Skanska’s other back-office Oracle systems to ensure consistency in the way information is used to support other business functions. “Since we have about a dozen different HR systems that are providing us with information, we built a master database that collects all the information,” explains Lindholm. “That data is sent not only to Oracle Talent Management Cloud, but also to other systems that are dependent on this information.” Collaboration to Scale Skanska is poised to launch a new Oracle module to link employee learning plans to the review process and recruitment assessments. According to Crane, connecting these processes allows Skanska managers to see employees’ progress and produce an updated learning program. For example, as employees take classes, supervisors can consult the Oracle Talent Management Cloud portal to monitor progress and align it to each individual’s training and development plan. “That’s a pretty compelling solution for an organization that wants to manage its talent on a real-time basis and see how the training is working,” Crane says. Rolling out Oracle Talent Management Cloud was a joint effort among HR, IT, and a global group that oversaw the worldwide implementation. Skanska deployed the solution quickly across all markets at once. In the United States, for example, more than 35 offices quickly got up to speed on the new system via webinars for employees and face-to-face training for the HR group. “With any migration, there are moments when you hold your breath, but in this case, we had very few problems getting the system up and running,” says Crane. Lindholm adds, “There has been very little resistance to the system as users recognize its potential. Customizations are easy, and a lasting partnership has developed between Skanska and Oracle when help is needed. They listen to us.” Bjork elaborates on the implementation process from an IT perspective. “Deploying a SaaS system removes a lot of the complexity,” he says. “You can downsize the IT part and focus on the business part, which increases the probability of a successful implementation. If you want to scale the system, you make a quick phone call. That’s all it took recently when we added 4,000 users. We didn’t have to think about resizing the servers or hiring more IT people. Oracle does that for us, and they have provided very good support.” As a result, Skanska has been able to implement a single, cost-effective talent management solution across the organization to support its strategy to recruit and develop a world-class staff. Stakeholders are confident that they are providing the most efficient recruitment system possible for competent personnel at all levels within the company—from skilled workers at construction sites to top management at headquarters. And Skanska can retain skilled employees and ensure that they receive the development opportunities they need to grow and advance.

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  • Using a Mac to share a VPN connection

    - by Luis Novo
    I am using an iMac to share a wired network connection with other devices in my house. I am using Apple's built-in sharing functionality which works very well. I have also been using Tunnelblick as an OpenVPN client. The two technologies work great when they are not used together. The moment I connect to my VPN, sharing stops working on all other devices; the whole point of this setup was for me to share my VPN connection. Is there a way to make Internet connection sharing and OpenVPN work together on the Mac? I am using Snow Leopard.

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  • How to disconnect a running bash job from the shell in Linux?

    - by raven
    I have a script that starts a server on a remote VM. All works great until I close the shell where I executed the script. When the shell closes, so does the server. After some looking around I found the following: & will send the job to the background when executed with the symbol disown -h will disconnect the job from the shell and allow it to run regardless of the shell. The command I used is: ./startServer.sh nasb_wxscat160_catalog-4.1.6 1.0.8 > catalog-log.txt & disown -h When I closed the shell and checked using ps -ef | grep java to see if the job is still working I did see it in the list. However when I tried to connect to the server it was unresponsive. On deeper inspection, the log file was filled just until I closed the shell and using the ps -m flag I say the process jobs were not working. Has any one encountered some thing of this sort?

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  • Our New Website Header (& Other Tweaks)

    - by justin.kestelyn
    Last week, the Oracle Technology Network Website went fixed-width. There are several reasons for this, most relating to providing a consistent user experience, easier management of Website content, etc. Furthermore, it's fairly standard for developer portals these days - java.sun.com, MSDN, and IBM DeveloperWorks are also all fixed-width sites. (My apologies to everyone who is unhappy about this change, but it really is an overall positive one.) Today, we have rolled out a brand-new header, the first step in what we call the "Mosaic" project - which is an effort to make the user experience across all Oracle Websites more consistent. To summarize the impact: The "pull-down" menus on the OTN site disappear; most of them move into a "flyout" button in the header. You can access the OTN flyout from any page on Oracle.com or the OTN site. Great for our page views. :) You also have direct access to the Downloads index from anywhere on Oracle.com. If you so desire, you can directly access product overviews, Oracle University and Support info, Oracle Store, etc etc from the OTN site now. Due to limited space in the flyout we cannot accommodate *all* the pull-down items, but they are all no more than 1 or 2 clicks away. This approach has been validated in extensive user testing over the last few months; I welcome your feedback now in comments. There are many other changes in train, with the next one being: A major homepage redesign, the first in 4 or 5 years.

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  • mysql connection is slow (5seconds)

    - by acidzombie24
    After building my webapp on a first boot i create 2 connections to mysql on debian then 1-2 (r/w) for every page after that. The connection consistently take 5.2 seconds to connect. Debian is in a VM running in my OS. Why is the connection taking this long? At times it will take < 0.1 seconds which is great but 5.2 x2-3 on every run is to much. Has anyone experience this problem? how do i solve it? note: I am using .NET to connect. Not that it matters. and its mysql v5

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  • OT: Fixing choppy video playback on OS X

    - by terrencebarr
    This is a bit off-topic but I wanted to share because it seems a lot of people are running into issues with choppy video playback and stutter on Mac OS X. I am using a Mac Mini with Snow Leopard (10.6.8) as a home media center and it has worked great in the past, playing back music and videos from multiple sources (web, quicktime, VLC, EyeTV). A few weeks ago the video playback from all my sources started to become choppy, to stutter, and often the picture would hang for seconds at a time. Totally unusable. Drove me nuts for two weeks. After much research and trial-and-error it turns out the problem was an outdated Flash Player which seems to have messed up the video pipeline for the entire system. The short is, I updated the Flash Player to version 11 directly from the Adobe web site, rebooted the Mac Mini, and all is well again! Judging from the various posts across the web, video playback appears to be a fairly widespread problem for Mac users and I hope this helps some of you out there! And I can’t wait to get rid of Flash altogether – I can’t remember the times it has crashed my browser, hung my system, and screwed up things. Thanks Adobe ;-( Cheers, – Terrence Filed under: Uncategorized Tagged: Adobe Flash, Mac OS X

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  • OpenGL CPU vs. GPU

    - by Nitrex88
    So I've always been under the impression that doing work on the GPU is always faster than on the CPU. Because of this, in OpenGL, I usually try to do intensive tasks in shaders so they get the speed boost from the GPU. However, now I'm starting to realize that some things simply work better on the CPU and actually perform worse on the GPU (particularly when a geometry shader is involved). For example, in a recent project I did involving procedurally generated terrain, I tried passing a grid of single triangles into a geometry shader, and tesselated each of these triangles into quads with 400 vertices whose height was determined by a noise function. This worked fine, and looked great, but easily maxed out the GPU with only 25 base triangles and caused a very slow framerate. I then discovered that tesselating on the CPU instead, and setting the height (using noise function) in the vertex shader was actually faster! This prompted me to question the benefits of using the GPU as much as possible... So, I was wondering if someone could describe the general pros and cons of using the GPU vs CPU for intensive graphics tasks. I know this mainly comes down to what your trying to achieve, so if necessary, use the above scenario to discuss why the "CPU + vertex shader" was actually faster than doing everything in the geometry shader on the GPU. It's possible my hardware (newest macbook pro) isn't optomized well for the geometry shader (thus causing the slow framerate). Also, I read that the vertex shader is very good with parallelism, and would love a quick explanation of how this may have played a role in speeding up my procedural terrain. Any info/advice about CPU/GPU/shaders would be awesome!

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  • The Joy Of Hex

    - by Jim Giercyk
    While working on a mainframe integration project, it occurred to me that some basic computer concepts are slipping into obscurity. For example, just about anyone can tell you that a 64-bit processor is faster than a 32-bit processer. A grade school child could tell you that a computer “speaks” in ‘1’s and ‘0’s. Some people can even tell you that there are 8 bits in a byte. However, I have found that even the most seasoned developers often can’t explain the theory behind those statements. That is not a knock on programmers; in the age of IntelliSense, what reason do we have to work with data at the bit level? Many computer theory classes treat bit-level programming as a thing of the past, no longer necessary now that storage space is plentiful. The trouble with that mindset is that the world is full of legacy systems that run programs written in the 1970’s.  Today our jobs require us to extract data from those systems, regardless of the format, and that often involves low-level programming. Because it seems knowledge of the low-level concepts is waning in recent times, I thought a review would be in order.       CHARACTER: See Spot Run HEX: 53 65 65 20 53 70 6F 74 20 52 75 6E DECIMAL: 83 101 101 32 83 112 111 116 32 82 117 110 BINARY: 01010011 01100101 01100101 00100000 01010011 01110000 01101111 01110100 00100000 01010010 01110101 01101110 In this example, I have broken down the words “See Spot Run” to a level computers can understand – machine language.     CHARACTER:  The character level is what is rendered by the computer.  A “Character Set” or “Code Page” contains 256 characters, both printable and unprintable.  Each character represents 1 BYTE of data.  For example, the character string “See Spot Run” is 12 Bytes long, exclusive of the quotation marks.  Remember, a SPACE is an unprintable character, but it still requires a byte.  In the example I have used the default Windows character set, ASCII, which you can see here:  http://www.asciitable.com/ HEX:  Hex is short for hexadecimal, or Base 16.  Humans are comfortable thinking in base ten, perhaps because they have 10 fingers and 10 toes; fingers and toes are called digits, so it’s not much of a stretch.  Computers think in Base 16, with numeric values ranging from zero to fifteen, or 0 – F.  Each decimal place has a possible 16 values as opposed to a possible 10 values in base 10.  Therefore, the number 10 in Hex is equal to the number 16 in Decimal.  DECIMAL:  The Decimal conversion is strictly for us humans to use for calculations and conversions.  It is much easier for us humans to calculate that [30 – 10 = 20] in decimal than it is for us to calculate [1E – A = 14] in Hex.  In the old days, an error in a program could be found by determining the displacement from the entry point of a module.  Since those values were dumped from the computers head, they were in hex. A programmer needed to convert them to decimal, do the equation and convert back to hex.  This gets into relative and absolute addressing, a topic for another day.  BINARY:  Binary, or machine code, is where any value can be expressed in 1s and 0s.  It is really Base 2, because each decimal place can have a possibility of only 2 characters, a 1 or a 0.  In Binary, the number 10 is equal to the number 2 in decimal. Why only 1s and 0s?  Very simply, computers are made up of lots and lots of transistors which at any given moment can be ON ( 1 ) or OFF ( 0 ).  Each transistor is a bit, and the order that the transistors fire (or not fire) is what distinguishes one value from  another in the computers head (or CPU).  Consider 32 bit vs 64 bit processing…..a 64 bit processor has the capability to read 64 transistors at a time.  A 32 bit processor can only read half as many at a time, so in theory the 64 bit processor should be much faster.  There are many more factors involved in CPU performance, but that is the fundamental difference.    DECIMAL HEX BINARY 0 0 0000 1 1 0001 2 2 0010 3 3 0011 4 4 0100 5 5 0101 6 6 0110 7 7 0111 8 8 1000 9 9 1001 10 A 1010 11 B 1011 12 C 1100 13 D 1101 14 E 1110 15 F 1111   Remember that each character is a BYTE, there are 2 HEX characters in a byte (called nibbles) and 8 BITS in a byte.  I hope you enjoyed reading about the theory of data processing.  This is just a high-level explanation, and there is much more to be learned.  It is safe to say that, no matter how advanced our programming languages and visual studios become, they are nothing more than a way to interpret bits and bytes.  There is nothing like the joy of hex to get the mind racing.

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  • Implementing an automatic navigation mesh generation for 2d top down map?

    - by J2V
    I am currently in the middle of implementing an A* pathfinding for enemies. In order to implement the actual A* logic, I need a navigation mesh for my map. I am working on a 2D top down rpg map. The world is static, meaning there is no requirement for dynamic runtime mesh generation. My world objects are pixel based, not tile based and have associated data with them such as scale, rotation, origin etc. I will obviously need some vertex data being generated from my world objects, maybe create a polygon generation from color data? I could create a colormap with objects for my whole map, but I have no idea how to begin creating nav mesh polygons. How would an actual navigation mesh generation look like with this kind of available information? Can anyone maybe point to some great resources? I have looked into some 3D nav mesh tools, but they seem kind of overly complex for my situation and also have a lot of their req data available from models. Thanks a lot in advance! I have been trying to get my head around it for some time now.

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  • NodeJS Supervisord Hashlib

    - by enedebe
    I have an problem with my NodeJS app. The problem is the include of the library Hashlib I've followed more than 10 times the instructions to install. Get a clone of the repo, do make and make install. NodeJS is installed in default path, and that's the tricky point: When I launch node app.js it works, perfectly. The problem starts when I configured my Supervisord to run with the same user, with the same config file as I have in other systems working, and I get that NodeJS can't find hashlib. module.js:337 throw new Error("Cannot find module '" + request + "'"); ^ Error: Cannot find module 'hashlib' I'm getting crazy, what can I do?! Why my user launching node from the console works great, but not the supervisord? Thanks!

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  • How common is prototyping as the first stage of development?

    - by EpsilonVector
    I've been taking some software design courses in the past few semesters, and while I see the benefit in a lot of the formalism, I still feel like it doesn't tell me anything about the program itself. You can't tell how the program is going to operate from the Use Case spec, even though it discusses what the program can do, and you can't tell anything about the user experience from the requirements document, even though it can include QA requirements. ...sequence diagrams are as good a description of how the software works as the call stack, in other words- very limited, highly partial view of the overall system, and a class diagram is great for describing how the system is built, but is utterly useless in helping you figure out what the software needs to be. Where in all this formalism is the bottom line- how the program looks, operates, and what experience it gives? Doesn't it make more sense to design off of that? Isn't it better to figure out how the program should work via a prototype and strive to implement it for real? I know that I'm probably suffering from being taught engineering by theoreticians, but I got to ask, do they do this in the industry? How do people figure out what the program actually is, not what it should conform to? Do people prototype a lot? ...or do they mostly use the formal tools like UML and I just didn't get the hang of using them yet?

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  • Empty /var/log after running cron bash script

    - by Ortix92
    I wrote a little bash script and all of a sudden my /var/log folder is completely empty except for the log I created for the bash script. This is the script I'm running every hour with cron: #!/bin/bash STL_DIR=/path/to/some/folder/i/hid LOGFILE=/var/log/stl_upload.log now=`date` echo "----------Start of Transmission----------" 2>&1 | tee -a $LOGFILE echo "Starting transfer at $now" 2>&1 | tee -a $LOGFILE rsync -av -e ssh $STL_DIR [email protected]:/users/path/folder 2>&1 | tee -a $LOGFILE echo "----------End of transmission----------" 2>&1 | tee -a $LOGFILE printf "\n" 2>&1 | tee -a $LOGFILE I want to be clear that I'm not 100% certain this is related to the empty logs folder. So if anyone could give me a pointer as to what could be going on about the reason why my log folder is empty, that'd be great.

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  • How do I learn IPSec VPN implementation on FreeBSD from pfSense

    - by Lang Hai
    I've been trying to figure out a complete working solution for IPSec VPN implementation on FreeBSD but with no luck till now. pfSense seems did a fantastic job on supporting IPSec and even for mobile clients, so I downloaded and installed pfSense hoping to figure out how it works, or at least see some configuration examples, but I couldn't find anything interesting maybe because I'm not familiar with pfSense, so I'd like to ask for help. How pfSense implements IPSec, what tools are used? Where does pfSense store all its configuration files? And since pfSense has its own kernel mods and acts as a different OS, there's no way for us to install it on top of an existing FreeBSD box, and plus that it is such a great project combining those fantastic features, so my question can kinda be extended as: How do we learn from pfSense, and implement its features on top of a regular FreeBSD server?

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