ON AIR

Git on Windows behind proxy

2010-09-15T06:52:00.000-07:00

I am working begind proxy at work and at home. So setting up some tools could be somewhat tricky especially at work due to very strict filtering policy.

To use git@github I've tried to use git on windows and finally ended up using Ubuntu inside VirtualBox with shared folder to commit and push to github. This is crazy setup =)

Today, finally had some time to getting things running at home using https protocol to github. Project I am working on initially developed with NetBeans and use GuiBuilder, so I've installed nbgit for NB 6.9 (http://code.google.com/p/nbgit/). It has very limited set of git commands. I tried TortoiseGit in addition, but it failed to push for unreported reason. If you have same issue you could try following solution(works for me=))

Install git for windows from http://code.google.com/p/msysgit/. Git-1.7.2.3-preview20100911 in my case
Launch Git Bash and go to your git repo folder.

Set https proxy.

export https_proxy=https://host:port
or 
git config --global http.proxy http://host:port

Update global git config to fix ssl verification error.

error: error setting certificate verify locations:
CAfile: /bin/curl-ca-bundle.crt
CApath: none

Fix for this:

git config --global http.sslverify false 
or 
git config --system http.sslcainfo \bin\curl-ca-bundle.crt

Now you can push you changes to origin
```
git push origin master
```

Studio for kdb+ v 3.23 released

2010-01-10T03:30:00.000-08:00

We've made some enhancements to Studio for kdb+ and v3.23 2010.01.09
is now available for download from

https://code.kx.com/trac/browser/contrib/cskelton/studio/releases/studio.zip

Changes include:

Support of Timestamp and Timespan types
Support of compressed data(kdb v2.6). Saw 4-10 times less data transferred
Migrated to Java 6
Jfreechart library was upgraded, all other libs dropped
Frame title tweaks. Now displayed as 'filename@server_name'
Last execution time(full cycle) for last query
Decimal format now can be specified in config: DecimalFormat=#.######
Look and feel can be specified in config: lookandfeel='lookandfeel class name'. This fix exceptions when using remote desktop on Windows with different theme settings
Builtin help has been remove. Please use code.kx.com as documentation source.
Excel export change to handle escaping text containing substring <IND>
Other small fixes...

Please contact me if you have any questions, bug reports.

For the moment the distribution is packaged as a zip file only - maybe
we will package as .exe too later. To use, download from the above
link, unzip retaining folder structure, and invoke via

java -jar studio.jar

The config file is automatically generated in
$HOME/.studioforkdb/studio.properties

Installing Go programming language story

2009-11-12T04:12:00.000-08:00

Few days ago google released 'go' programming language - very fast, compiling and many-many other features. Official site for this http://golang.org. Also you can view presentation on YouTube.

I've tried it on my Windows desktop under cygwin using http://golang.org/doc/install.html and failed with an error:

%%%% making lib9 %%%%

quietgcc -ggdb -I/cygdrive/c/work/go/include -O2 -fno-inline -c /cygdrive/c/work/go/src/lib9/_p9dir.c

quietgcc -ggdb -I/cygdrive/c/work/go/include -O2 -fno-inline -c /cygdrive/c/work/go/src/lib9/_exits.c

quietgcc -ggdb -I/cygdrive/c/work/go/include -O2 -fno-inline -c /cygdrive/c/work/go/src/lib9/argv0.c

quietgcc -ggdb -I/cygdrive/c/work/go/include -O2 -fno-inline -c /cygdrive/c/work/go/src/lib9/atoi.c

/cygdrive/c/work/go/src/lib9/_p9dir.c:245: error: 'struct stat' has no member named 'st_gen'

make: *** [_p9dir.o] Error 1

make: *** Waiting for unfinished jobs....

Next, I've installed latest version 3.0.10 of VirtualBox and Ubuntu 9.10 x64 on my Windows XP 32bit desktop.
Having installed all required dependencies and trying to clone repo:

svidyuk@svidyuk-desktop:~$ hg clone -r release https://go.googlecode.com/hg/ /home/svidyuk/go
abort: error: _ssl.c:480: error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol

Googleing for this error found on launchpad that https not supported behind proxy... So, I've simply typed:

svidyuk@svidyuk-desktop:~$ hg clone -r release http://go.googlecode.com/hg/ /home/svidyuk/go
requesting all changes
adding changesets
adding manifests
adding file changes
added 3976 changesets with 16799 changes to 2931 files
updating working directory
1640 files updated, 0 files merged, 0 files removed, 0 files unresolved

And... in few minutes I've faced issue similar to 53. So I've added http to NOTEST in pkg/Makefile, then it hangs on testing net then added net to NOTEST and go!

./8.out
hello, world

And now... go,go,go! Install it and try. BTW does native client support means that we can script Chrome with go?

How-to: Running q/kdb+ as service on Windows

2009-09-15T01:52:00.000-07:00

When simply running q on windows from command line you will end with many q instances running consuming space on you taskbar and so on. If you spend some time and setup all your q dev/prod instances like services on Windows this will save you huge amount of time. BTW if you don't have q right now you can download it for free from KX Systems site:http://kx.com/Developers/FREE-DOWNLOAD.php

There are many tools for Windows to wrap any executable as service, but I will use free tool from Microsoft - SRVANY.
SrvAny is a tool found in the Windows NT Resource Kit that is used for running Windows NT applications as services. You can download it from Microsoft site:ftp://ftp.microsoft.com/bussys/winnt/winnt-public/reskit/nt40/i386/srvany_x86.exe .

To create a Windows service, perform the following steps:

1.Copy srvany.exe to c:\q

2. At command prompt(cmd.exe), type

instsrv.exe q5010 c:\q\srvany.exe

This will create service named q5010. We will use it to run q on port 5010(tickerplant)

3.Prepare Windows registry file to setup parameters for q5010 service:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\q5010\Parameters]
"Application"="c:\\q\\w32\\q.exe"
"AppParameters"="-p 5010 -q"
"AppDirectory"="c:\\q"

4. Now you can use q5010 service as usual windows service:

To start: sc start q5010 or net start q5010
To stop: sc stop q5010 or net stop q5010

If you want setup several instances repeat steps 2-3 for different service names and ports. If you run tickerplant, realtime and historical database you will have 3 services at minimum, q5010, q5011, q5012. To start in appropriate order you can setup dependencies between q5011 and q5010

sc.exe q5011 depend= q5010

Note that sign '=' must be immediately after word depend and space before service name.

In this way you can setup on windows complete kdb setup that starts and stops in right way.

Additional features:

Output redirect:
Also if you need to do redirect of output you must modify application using following reg file.

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\q5010\Parameters]
"Application"="c:\\WINDOWS\\system32\\cmd.exe"
"AppParameters"="/c c:\\q\\w32\\q.exe -p 5010 -q >c:\\q\\logs\\q.5010.log"
"AppDirectory"="c:\\q"

Environment setup:

1.Start regedit and go to following subkey:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\q5010\Parameters]
2. Add Value with name AppEnvironment with type REG_MULTI_SZ
3. In the Multi-String Editor, enter environment variables using the syntax =.

TZ=GMT
QHOME=c:\q

Do not forget to add a new line after the last line, or the value will be ignored.

Related articles:
How To Create a User-Defined Service:http://support.microsoft.com/kb/137890
Troubleshooting SrvAny Using Cmd.exe:http://support.microsoft.com/kb/152460
Passing Environment Variables to Applications Started by SRVANY:http://support.microsoft.com/kb/197178

How-to: Package single jar with netbeans

2009-08-24T20:31:00.000-07:00

For desktop application it's quite usefull to package it as single jar and launch as java -jar ...
or wrap it with launch4j and make executable file for you platform(for windows now but also will try for OS X).
The story is short actually - Just add following section into your build.xml file.

<target name="-post-jar">
<jar update="true" destfile="${dist.jar}">
<zipfileset src="${dist.dir}/lib/lib1.jar"/>
<zipfileset src="${dist.dir}/lib/lib2.jar"/>
<zipfileset src="${dist.dir}/lib/lib3.jar"/>
</jar>
</target>

Also some libraries rely on content of MANIFEST.MF file, so actually you need to merge file with same names from all jar in META-INF folder. Will update on solution to this =)

UPD: Article on this topic was published on java.sun.com: http://java.sun.com/developer/technicalArticles/java_warehouse/single_jar/ . No solution for merging MANIFEST.MF files proposed =(

UPD2: You can use exclude tag inside zipfileset to exclude manifest update: META-INF/MANIFEST.MF

Необычное вокруг #1

2009-07-26T10:33:00.000-07:00

"Космомясо"

Туборг ГРИН Черной и Туборг ГРИН Лимон

Оказывается женскую гигиену можно просто купить

Новый сайт с использованием служб Google

2009-07-25T16:17:00.000-07:00

Вчера открыли в публичный доступ новый сайт - Паркет Premium (http://www.parketpremium.ru ). Сайт целиком и полностью был сделан с использованием Google Apps, разве что кроме автоматической регистрации домена(зона .ru) сейчас не поддерживается.
Интересно что все из того что может понадобится для сайта небольшой компании имеется в наличии, а именно:

Формы обратной связи и опросники(также возможно за несколько минут создать любую другую форму с автоматическим сохранением результатов в spreadsheets). Это делается на основе Google docs for apps. Также очень понравилась возможность элементарного встраивания формы в тело страницы в любом месте.
Большой выбор стандартных тем для сайта с очень большими возможностями настройки фона/размеров/шрифтов.
Интеграция с Google Analytics и Webmasters. Возможность автоматической интеграции с Яндекс.Вебмастер отсутствует, так что пришлось подтвержать с помощью загрузки файла(Управление сайтом - Приложения - Добавить) yandex_xxxxxxxxxxxxxx.txt в корень сайта. Обратите внимание на то что пустой файл загрузить не дает.
Автоматическая генерация дерева сайта и возможность гибкой настройки меню.
Удобные макеты для организации структуры каждой отдельной страницы(1,2,3 колонки с/без header/footer)

Загадки для детей из мурзилки 30-летней давности

2009-07-24T14:36:00.000-07:00

1. Чтобы спереди погладить, нужно сзади полизать. (Почтовая марка)

2. Кругом волоса, посредине колбаса. (Кукуруза)

3. Сверху черно внутри красно, как засунешь так прекрасно. (Галоши)

4. Волос на волос, тело на тело и начинается темное дело. (Веки)

5. То холодный - то горячий, то висячий - то стоячий. (Душ)

6. Туда - сюда - обратно, тебе и мне приятно. (Качели)

7. Что ты смотришь на меня? Раздевайся я твоя! (Кровать)

8. Волосатая головка за щеку заходит ловко. (Зубная щетка)

9. Мы - ребята удалые лазим в щели половые! (Веник)

10. Лежит на спине - никому не нужна. Прислони к стене - пригодится она. (Лестница)

11. В темной комнате, на белой простыне 2 часа удовольствия.(Кино)

12. Ты помни его немножко, станет твердым как картошка. (Снежок)

13. Возьму его в руки, Сожму его крепко - Он станет упругим и твердым, как репка. (Снежок)

14. Красная головка в дырку лезет ловко (Дятел)

15. Если б не бабушкины лохматушки - мерзли бы дедушкины колотушки.(Варежки)

16. Не хрен, не морковка - красная головка. (Пионер в пилотке)
(еще имеются тут)

Слух 1:
Загадка была опубликована в годы московской олимпиады(1980 если кто не помнит).
Слух 2:
В конце 80х годов, за публикацию этих загадок, какие-то люди лишились своих мест в редакции журнала мурзилка

Расскажите какие впечатления после прочтения этих загадок =)

QSpec: rspec for q

2009-07-13T03:58:00.001-07:00

RSpec is great tool - and it's spreading to new languages.

Setting up CUDA project

2009-04-13T05:58:00.001-07:00

Any developer sooner or later returns to 'first high level language' - C. Java developer with realy great IDEs or very dynamic Rubyist may be confused with all that 'old' stuff. Linux kernel developer will ask why he need an IDE if there is vim or emacs editors =)

When starting developing with new framework, we always spend some time especially on Windows to setup appropriate paths, tools etc.

So I've decided to write down some check list to setup Visual Studio 2008 express edition to develop with CUDA.

1. Download and install Visual Studio Express 2008 for C++. From here: http://www.microsoft.com/express/vc/

2. Install latest drivers from NVidia. From here: http://www.nvidia.com/Download/index.aspx?lang=en-us

3. Download and install Cuda Toolkit and CUDA SDK. From here:http://www.nvidia.com/object/cuda_get.html

4. Set CUDA_INC_PATH,CUDA_LIB_PATH in windows environment variables

5. Copy project folder to $CUDA_SDK_HOME\projects\

6. Use instructions from $CUDA_SDK_HOME\doc\syntax_highlighting to enable syntax highlighting for .cu files

7. cppIntegration project from CUDA SDK have very helpful build rules for .cu file. So just add additional xml sections to you .vcproj file. Don't know if there is standard way to do this, so I've done this by hand.

Add ToolFile to ToolFiles section:

<ToolFiles> <ToolFile RelativePath="..\..\common\Cuda.rules" /> </ToolFiles>

Add additional build rule to all of your Configurations:

<Tool Name="CUDA Build Rule" Include="$(CUDA_INC_PATH);$(CUDA_SDK_INC)" />

After that from properties of .cu file you can tell Visual studio to build that file with nvcc just by specifying build rule as 'CUDA Build Rule"

Go GPU, Go!

Can't install Google Chrome while behind proxy?

2009-01-22T13:08:00.000-08:00

I had quickly moved to chrome after release on my home computer and want to do the same on laptop. But faced issue with infinite installation :(

Suggestions to install one from google pack without updates not for me- no dev builds! =)

So you can try to make easy two steps to fix this:

1) Uncheck Control Panel->Internet Properties->Connections->LAN Settings->Automatically detect settings.

2) Install in a normal way from google.com/chrome

Алфавит 2008 по версии Google.ru

2008-08-31T21:58:00.000-07:00

Алфавит по версии версии google suggest:

а=анекдоты
б=билайн
в= в контакте
г=гороскоп
д=дом 2
е=евросеть
ё=ёж
ж=жди меня
з=зайцев нет
и=игры
й=йога
к=контакт
л=любовные смс
м=музыка
н=новости
о=одноклассники
п=погода
р=работа
с=сонник
т=техносила
у=укрзалізниця
ф=фото
х=хонда
ц=цитаты
ч=чат
ш=шкода
щ=щитовидная железа
ь=ьнызфсу(myspace)
ы=ыьщекш(smotri.com)
ъ=ъж
э=эльдорадо
ю=южная осетия
я=яндекс

Интересно то, что алфавит для .ru и для .com немного отличаются.

rorbench on github now!

2008-06-26T09:30:00.000-07:00

Current source just uploaded into github.com.
You can clone it , test it and report bugs! =)
http://github.com/sv/rorbench/tree/master

JRuby improves performance with minor versions!

2008-06-22T13:10:00.001-07:00

I've done some simple benchmarking with typo bloging engine and here is some graphs on this.
Benchmark was done on jruby and mri with untuned versions of ruby and openjdk 6.0 for jruby.

It's really awesome improvements! But we have a lot more room for further improvements!

Cygwin git-svn doesn't work

2008-06-07T12:02:00.000-07:00

All JRuby maintainers use git-svn for managing their versioning. But jruby on github supported manually.
I've also try to use git-svn on my Windows machine and encounter an error:

fatal error - unable to remap cygdb-4.2.dll to same address as parent

After some googling I've found similar problem for python on cygwin(git-svn uses perl).
Again 2-step solution:

Exit all Cygwin processes and stop all Cygwin services.Execute ash from Start/Run... or a cmd or command window. In my case that was ssh,init, svn services and cygwin terminal.
/bin/rebaseall

Shell on windows

2008-06-05T13:18:00.000-07:00

As you all know, command prompt on Windows * very poor. There is simple 2-step solution to this problem!
1)Setup local ssh server(instructions)
2) Use putty to connect (putty)

That's all =)

Beautiful Coding on road!

2008-05-21T00:38:00.000-07:00

Finally! Almost one week sooner than Fedex expected they do this- book in my hands.
With tips and tricks from leading programmers this Summer of Code will be definitely Beautiful =)

Benchmark Suite development plan

2008-05-10T15:21:00.000-07:00

It's only draft version, any suggestions are welcomed!

Breaking application into several pieces help to make ease of use and modification each part, so lets break:
1)'Typical' RoR application
An application that can hit performance cases most rails developers runs into. I see such an application as some quick project with most usefull plugins such as will_paginate, etc(any suggestions?). May be we should look into 15 minute projects from rails site(are they need to be updated?)

2)Rake tasks
Automated rake tasks able to pull latest version of rails edge from git and latest jruby(ruby) version build and test. It is suitable for running on server( for example in continiuos building) and locally by developers for introduced regressions =)

3)Baseline
Ruby1.8+latest stable Rails.
Most used for now is MRI 1.8 and JRuby measured against 1.8, so that's the primary metric by which we need to measure.

4) Rating
Provide rates for combinations ruby implementation+rails against baseline. Write all that data into database to make it's usage in rails app.... magic circle =)

5) Visualize results
Write some app that can show pretty statistics for obtained data

UPD: For now we choose typo blog engine as typoical rails webapp. It uses many commoan for modern webapp features:

Uses caching.
Comments
Spam protection
Textile, Markdown
Article categories and tags
Ta-Da List, del.icio.us, Flickr, 43 Things, and Upcoming.org syndication
Ajax based live search and commenting
Ajax based comment moderation
Full text search with live preview
RSS2 and Atom 1.0 syndication feeds as well as feeds for comments and trackbacks

День Победы 63 года назад....

2008-05-10T11:42:00.000-07:00

Что печатали в газетах в мае перед днем победы.

За десять лет ни одной катастрофы, ни одной крупной аварии, ни одного запоздания — вот счастливое следствие бодрой подтянутости и трудовой сосредоточенности подземной Армии метрополитена, перевезшей за десять лет на 4 655 тысячах поездов 2 600 миллионов пассажиров.

Москвичи широко распахнули окна. Многие смотрели с верхних этажей на освещенные улицы. Многие выходили из своих домов, чтобы со стороны посмотреть на свои освещенные квартиры.

Всего не передать....
Статья в БГ

Performance rocks!

2008-05-10T08:01:00.000-07:00

Hi, I'm Sergey Vidyuk from Russia and will work on rails benchmarking this summer.
It's about benchmark suite for Rails for developers to find and fix performance regressions and bottlenecks.
Suite will be able to benchmark full Rails stack and provide useful statistics about request processing in different parts of rails.
As Rails 2.0 become restfull, now it's not enough to test only fast path GET requests as most benchmarks do, and test all of them:POST,GET,PUT,DELETE (CRUD).
Stay tuned =)

Правило РВС

2008-05-02T15:34:00.000-07:00

Недавно на курсе "Инновационный практикум" моей второй половинке рассказали, что есть такое правило РВС(Размер-Время-Стоимость) вокруг которого все инновации и строятся.
Вот например служба хранения вещей. Вещи которые занимают МЕСТО(Размер) длительное ВРЕМЯ, можно куда-нибудь отдать на хранение, например на срок от 3 месяцев, заплатив за это дело соответствующую сумму... но как всегда, любая хорошая идея не нова :(

XML/XSLT не умер!

2008-04-14T05:58:00.000-07:00

А мы его давно используем, значит мы не так уж и устарели!
Но нам совсем не хватает людей которые были бы заинтересованы в оживлении и усовершенствовании Arp.Site
http://habrahabr.ru/blog/about_cms/38034.html

Задача про шнуры

2008-04-14T05:57:00.001-07:00

Простая задачка.

Есть два бикфордовых шнура. Разных. Известно одно: каждый из них полностью сгорает ровно за час. Как при помощи этих шнуров (и зажигалки :) отмерить 45 минут?

Дополн. Как горят шнуры не известно: может равномерно, а может и нет.

Оговорю ещё раз. То что шнур целиком сгорает за час, не значит что половина шнура сгорит за 30 минут.