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14152 discussions

What is a Memory Barrier
by Shirish Chandra Pal 22 Apr '02

22 Apr '02

Hi, Can anybody explain what is a memory barrier? I was scanning through some of the sample code of module implementation. In many places author has called a macro 'mb()'. Without any detail comments author has said 'a memeory barrier is required...'. I found that mb is defined as 'do{;} while(0)' ----- Shirish(a)antara.net

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Re: [ILUG-BOM] Promoting Linux
by Tahir Hashmi 21 Apr '02

21 Apr '02

On Fri, 19 Apr 2002 23:41:09 aaaaarrrgghhh wrote: >If i'm a company like Infosys/SAP, then I'm designing software to make >companies more productive.. There's a catch here - you've got to distinguish between products and services. A Word Processor is a software that can be used by n number of people without any changes done to the underlying source. OTOH, what Infosys/SAP would do is develop systems that apply to one specific customer and using the same techniques in another environment would again involve a lot of analysis and what-have-you for deployment. There are two pieces to this solution now - the Concept and the Software. You can't keep the Concept under wraps. The SEs at the client location have to know how your system works. The Software may be closed source but it won't make much of a difference if another party lifted your Software and Concept and tried to deploy it at another location because the analysis will have to be redone, the implementation will have to be redesigned to fit the other client and the software itself will have to be tweaked. Infosys charges according to man-hours spent on a project. Anyone who has been thru a complete development cycle knows that analysis, design, maintenance and support take far more man-hours than coding. So if I'm a Free Software counterpart of Infosys, I still earn a lot for my man-hours in other aspects. Where products are concerned, I follow the concept of one contributor to Free Software (regretfully, I forgot his name) - it makes a lot of economic sense to me if I give one app away in exchange of an entire OS and so many more apps for free. Perhaps, now you'd understand Philip's concept of "Cost per User". --- Tahir Hashmi (VSE, NCST) http://www.ncst.ernet.in/~tahir tahir AT ncst DOT ernet DOT in __________________________________ We, the rest of humanity, wish GNU luck and Godspeed See Dave Matthews Band live or win a signed guitar http://r.lycos.com/r/bmgfly_mail_dmb/http://win.ipromotions.com/lycos_02020…

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US Dept of Energy to run Linux
by |= n I y A N T =| 21 Apr '02

21 Apr '02

hi, here's a relevant news-story ... since vr having this thread about govt promoting / adopting linux ... ppl involved in this initiative might find it useful ... ny ============================================= The U.S. Department of Energy (DOE) Pacific Northwest National Laboratory (PNNL) has ordered a $24.5 million supercomputer running the Linux operating system for its facility in Richland, Washington, it announced Tuesday. http://www.cnn.com/2002/TECH/industry/04/18/doe.linux.idg/index.html

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Re: [ILUG-BOM] Qmail books
by Amol Hatwar 21 Apr '02

21 Apr '02

On Sat, 20 Apr 2002 Shankar Ramchandran wrote : >Dear all > >I need to set up an email server for my network. I would like to >know if >there are any good books that will explain installation, >configuration, and >tuning of qmail that you may recommend. Why not search amazon.com? :P _________________________________________________________ Click below to visit monsterindia.com and review jobs in India or Abroad http://monsterindia.rediff.com/jobs

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Re: Re: [ILUG-BOM] Problem with Cookies support
by Amol Hatwar 21 Apr '02

21 Apr '02

On Fri, 19 Apr 2002 Trevor Warren wrote : > >--- Amol Hatwar <amolhatwar(a)rediffmail.com> wrote: > > And as far as I know cookies have > > always been a > > problem when using proxies. >[snip] > my dear pal... > not necessarily.....usin transparent >proxyin...MASQ....SQUID....is the best soln. My own [snip :) ] I thought I was replying in apache's context :D. Amol Hatwar. _________________________________________________________ Click below to visit monsterindia.com and review jobs in India or Abroad http://monsterindia.rediff.com/jobs

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Promoting Linux
by Keyur Shroff 20 Apr '02

20 Apr '02

Hi Friends, A good news is that our central government is also taking deep interest in promoting Linux in all area. Government wants various agencies to give some feedback on the information related to Linux. They have sent a draft to NCST also. I think this mailing list is the best place where I can post the questions and get answers so that I can forward the information to our government. Please give as much input as you can. I am directing the revised information/feedback format on "Linux India Initiatives" for your kind consideration and input. The format is as follows : "Linux India Initiatives" Information may kindly be furnised under the following heads : 1. Linux - The need; 2. Demand profile segments - such as Home, Education, Research, Govt, Defence, Business, Embedded systems etc. 3. Present scenario (International) vs competing products 4. Issues to resolve : (i) Indian Language Support (ii) Security (iii) Awareness/education (iv) Certification (v) Standardisation (vi) Service Model vs product model (vii) Identification of minimal set of application 5. Transition strategy - Unix to Linux, legacy port 6. Consortium for linux based collaborative Development? The Li18nux, OSDL, LSB...? 7. Action Plan Kindly send your views/comments as soon as possible. Thanks, Keyur

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Re: [ILUG-BOM] Problem with Cookies support
by Amol Hatwar 19 Apr '02

19 Apr '02

>Hi, Yea hi ><VirtualHost 192.9.200.203> > >ServerName 192.9.200.203 > >RewriteEngine On > ..... Ok you are using Apache as a proxy >Now the problem here is this particular website has made cookies >support manditory and this has created a lot of problem because >every time the user connect and a cookies is sent to this user >the cookies is sent with company.com. Since the cookies doesnt >get registered every hit of his to this website keeps sending him >new cookies. OK... You should try reading the docs that come with the software fisrt. You'll get all your answers in the apache documentation for the proxy module. And as far as I know cookies have always been a problem when using proxies. Regards, Amol Hatwar.

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Its all in the head!
by Amol Hatwar 19 Apr '02

19 Apr '02

Hi, I have been following the pieces on convincing the Govt. to use GNU/Linux very closely. First, the factor of spending US$ is a logical one. Second, use GNU/Linux for most of my work and the learning curve has been steep-but I enjoy it. Ideally the Govt. should use GNU/Linux. But I wonder if the point just ends there. Leave training the babus apart, someone or some pressure has to be put for learning things. Who'll do this? Perhaps we could make a easier to use interface for the babus to use. But many people still doubt the capabilities of loosely connected programmers using the Net to develop real life programs. Linux itself has been through this stage. Its my general observation that many people who do use Linux and related technologies in the ring mainly do so because of the sense of adventure of trying something out thats cheaper, powerful, open and scaleable. Also there is a huge amount of self-motivation involved. On the other hand people generally get attracted to Windoze because of the eye-candy. They say it's more productive. Still, I see people around me in offices and big firms with a Compaq or an MNC brand desktop catching dust (*Kya karu Amol seekhne ko time nahi milta*). I see training camps that are arranged for people to get on to the new electronic system-happy smiles during the lunch and after a day or two everyone snaps back to the old method of work, the lunch digested well. Sometimes its just the other way. Firms think their new software is rancid (*grrr... Amol I can't even enter a mobile number in it*). They go for a new system with guarantees of SLAs and a thousand pages of Requirement Specs and a dozen of prototypes are tested. The thing ships. Somehow people are just not enthusiastic about it anymore. They know deep inside that there's been a mistake somewhere but they refuse to accept it. They still get the work done somehow with a Chandu from the Software Devloper's on permanent deputation in the firm. I have seen most of the projects on Windoze come to this. So I think the issue is far from convincing here. It's more about motivation and taking interest. If we can make the babus feel motivated to make the decision, there will be no reason why they wouldn't make it. Of course, someone will have to make the applications for them probably without any of the above glitches and deliver it in time. Maybe making and supporting applications for a sum will be a place where the almost undoable babu-hunger can be satisfied in someway. I feel this area is a bit more sensitive. Probably because our Govt. can take the responsibilities and shove it on to other peoples backs. The Armed forces have suuferred a plenty because of the glitches higher up. But here, the babus themselves will have to use the things they pay and decide for. No matter what the platform-who will save the babus if they are not motivated? Amol Hatwar.

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Re: [ILUG-BOM] Promoting Linux.....let the babus use it 1st..;)
by Dinesh Shah 19 Apr '02

19 Apr '02

Hi, On Thu, 18 Apr 2002, Trevor Warren wrote: > can i suggest 1 thing pliss...;) > "A satisfied Customer is the BEST Advertising tool > any enterprise can hire...."...not tru in all cases > tho...;) > > Dude..letz get the babus to use it 1st and DEMO to > them that all their daily server/desktop needs can b > done using Free SOftware.....The industry behind the > services perspective will alwayz b there......ANd > believe me dude... And how do you plan to make them use any thing? > once the Govt sees that Support/Service is > available.....all the aprehensions will be drawn away. > So lets aske for a dept to start Gnu-linuxing ASAP. > The rest we can plan out.... Have you approached any department? > Trevor Warren With regards, -- --Dinesh Shah :-) Shah Micro System dinesh(a)indiamail.com http://dineshah.tripod.com Mobile: 98213-11906

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Problem with Cookies support
by volu gina 19 Apr '02

19 Apr '02

Hi, Every person in the my organisation does not have internet connectivity provided for them. To allow access to certain websites we have an apache configured which helps us do it. Here is one such configuration for accessing one particular website. When any user needs to access this website he keys his url as http://192.9.200.203 and accesses the website without even knowing that he is accessing the website on the internet since the url will always show up as http://192.9.200.203/xxxx. Below is the config for the same. <VirtualHost 192.9.200.203> ServerName 192.9.200.203 RewriteEngine On RewriteRule ^(.*) http://www.company.com$1 [P,L] ProxyPass / http://www.company.com/ ProxyPassReverse / http://www.company.com/ ProxyRemote http://www.company.com/ http://192.9.200.34:80 </VirtualHost> Now the problem here is this particular website has made cookies support manditory and this has created a lot of problem because every time the user connect and a cookies is sent to this user the cookies is sent with company.com. Since the cookies doesnt get registered every hit of his to this website keeps sending him new cookies. I cannot create a dummy dns entry like local.company.com instead of the ip address 192.9.200.203 because I do not have a local dns server put in place here. Any suggestions as to how can I enable .company.com cookies to work on such a setup. Thanks in Advance. Cheers, Volly. --------------------------------- Download Yahoo! Score Tracker for live cricket scores on your desktop

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