shakthimaan.com

Clojure meet

Mon, 30 Aug 2010 18:00:00 GMT

A hands-on workshop on Clojure was organized in TwinCLinGs' August months' meet at Rhythm & Hues Studios Pvt. Ltd, Hitech City, Hyderabad, India by Bhaishampayan Ghose, co-founder and chief geek at Infinitely Beta. A picture of the attendees:

The slides are available. You can install clojure on Fedora using:

  $ sudo yum install clojure

A clojure programming book is also available at http://en.wikibooks.org/wiki/Clojure to get started! Thanks to volunteers who sponsored for Bhaishampayan Ghoses' travel, to and from Pune, India.

KMR Foundation

Sun, 22 Aug 2010 06:00:00 GMT

Visited KMRF who needed assistance in installation, troubleshooting, and use of the XO laptops. I had a chance to visit the Government school in Aziznagar, Ranga Reddy district, Andhra Pradesh, India, where they have their XO laptop deployment. Most of the students can speak only in Telugu. They have a chart in the classroom for English-Telugu reference.

Tuxmath was installed, and they enjoy using it a lot:

nesC

Tue, 17 Aug 2010 03:30:00 GMT

nesC is now available for Fedora. It is an extension to the C programming language designed for use with TinyOS, which is used in wireless sensor networks. Install it using:

  $ sudo yum --enablerepo=updates-testing update nesc

It could not be shipped with Fedora earlier because it used the now deprecated Intel Open Source license. Thanks to David Gay and Philip Levis, it has now been updated with dual BSD/GPL license. There is also support for GNU Emacs with the emacs-nesc package.

  $ sudo yum --enablerepo=updates-testing update emacs-nesc

Here is a screenshot of GNU Emacs with syntax highlighting in nesc-mode:

Teal

Mon, 02 Aug 2010 19:00:00 GMT

Teal, the popular verification utility and connection library is now available for Fedora:

  $ sudo yum install teal

It is a C++ multithreaded library to verify verilog designs. It deals with simulation logging, error reporting, threading, memory model management. It basically provides all the low level building blocks needed to start a verification environment. A simple example:

#include 
using namespace teal;
int verification_top ()
{
  vreg clock (“testbench.clk”);
  vout log (“Chapter 4- Example 1”);
  dictionary::start (“simple_clock_test.txt”);
  uint number_of_periods (dictionary::find (“number_of_clocks”,20));
  for (int i(0); i < number_of_periods; ++i)  {
    log << note << “i is “ << i << clock is << clock << endm;
  }
  dictionary::stop ();
  vlog::get (expected) << “test completed” << endl;
}

It is released under the Trusster open source license, but, that is incompatible with the GPL. But, thanks to the founders of Trusster.com, Mike Mintz and Robert Ekendahl, who agreed to release the same under the LGPLv2+ and GPLv2+ license for Fedora!

Computational Fluid Dynamics General Notation System

Tue, 20 Jul 2010 13:00:00 GMT

The Computational Fluid Dynamics General Notation System (CGNS) library is now available in Fedora under the zlib license. Install it using:

  $ yum install cgnslib

It provides a general, portable, and extensible standard for the storage and retrieval of computational fluid dynamics (CFD) analysis data. It consists of a collection of conventions, and free and open software implementing those conventions. It is self-descriptive, machine-independent, well-documented, and administered by an international Steering Committee.

Chalmers Lava2000

Thu, 01 Jul 2010 11:00:00 GMT

Chalmers Lava2000, a hardware description library in Haskell is now available for Fedora. Thanks to Emil Axelsson and Jens Peterson for their feedback, and package review. You can install the same using:

$ sudo yum install ghc-chalmers-lava2000       \
                   ghc-chalmers-lava2000-devel \
                   ghc-chalmers-lava2000-doc

To illustrate a half adder example with the use of the Lava library, create a Test.hs file:

import Lava

halfAdd (a, b) = (sum, carry)
  where
    sum   = xor2 (a, b)
    carry = and2 (a, b)

Load it with ghci (Glasgow Haskell Compiler):

$ ghci Test.hs

GHCi, version 6.12.2: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Loading package ffi-1.0 ... linking ... done.
[1 of 1] Compiling Main             ( Test.hs, interpreted )
Ok, modules loaded: Main.

Test half adder with low, high inputs using:

*Main> simulate halfAdd(low, high)
Loading package syb-0.1.0.2 ... linking ... done.
Loading package base-3.0.3.2 ... linking ... done.
Loading package array-0.3.0.0 ... linking ... done.
Loading package filepath-1.1.0.3 ... linking ... done.
Loading package old-locale-1.0.0.2 ... linking ... done.
Loading package old-time-1.0.0.3 ... linking ... done.
Loading package unix-2.4.0.0 ... linking ... done.
Loading package directory-1.0.1.0 ... linking ... done.
Loading package process-1.0.1.2 ... linking ... done.
Loading package time-1.1.4 ... linking ... done.
Loading package random-1.0.0.2 ... linking ... done.
Loading package haskell98 ... linking ... done.
Loading package chalmers-lava2000-1.1.1 ... linking ... done.
(high,low)
*Main>

Testing half adder with high, high inputs gives:

*Main> simulate halfAdd(high, high)
(low,high)

You can also generate vhdl file using:

*Main> writeVhdl "halfAdd" halfAdd

Loading package syb-0.1.0.2 ... linking ... done.
Loading package base-3.0.3.2 ... linking ... done.
Loading package array-0.3.0.0 ... linking ... done.
Loading package filepath-1.1.0.4 ... linking ... done.
Loading package old-locale-1.0.0.2 ... linking ... done.
Loading package old-time-1.0.0.4 ... linking ... done.
Loading package unix-2.4.0.1 ... linking ... done.
Loading package directory-1.0.1.1 ... linking ... done.
Loading package process-1.0.1.2 ... linking ... done.
Loading package time-1.1.4 ... linking ... done.
Loading package random-1.0.0.2 ... linking ... done.
Loading package haskell98 ... linking ... done.
Loading package chalmers-lava2000-1.1.1 ... linking ... done.
Writing to file "halfAdd.vhd" ... Done.

Copy /usr/share/chalmers-lava2000-1.1.1/Vhdl/lava.vhd to your project directory, and you can verify the generated halfAdd.vhd with it using ghdl:

$ ghdl -a lava.vhd
$ ghdl -a halfAdd.vhd 
$

You are encouraged to read the "Slightly Revised Tutorial on Lava" by Koen Claessen, and Mary Sheeran for more detailed documentation on using the library.

Hardware Complexity Tool

Fri, 18 Jun 2010 23:00:00 GMT

Hardware Complexity Tool (hct) is now available for Fedora. It generates scores that represent the complexity of the modules of integrated circuit design projects. It uses McCabes' cyclomatic complexity for understanding branch complexity. You can run hct on verilog, vhdl, cdl (computer design language) files or directories that contain these files. For example:

$ hct verilog
Directory: /tmp/verilog

verilog, 18 file(s)
+--------------------+--------------+------+-------+----------+--------+
| FILENAME           | MODULE       | IO   | NET   | MCCABE   | TIME   |
+--------------------+--------------+------+-------+----------+--------+
| Case.v                              0      0       18         0.1504 |
|                      case           0      0       18                |
+----------------------------------------------------------------------+
| modules.v                           1      0       2          0.0137 |
|                      m1             1      0       1                 |
|                      m2             0      0       1                 |
+----------------------------------------------------------------------+
| RAM.v                               7      0       4          0.1653 |
|                      RAM            7      0       4                 |
+----------------------------------------------------------------------+
| hello_world.v                       0      0       1          0.0113 |
|                      hello_world    0      0       1                 |
+----------------------------------------------------------------------+
| one_day2.v                          0      0       2          0.0423 |
|                      one_day2       0      0       2                 |
+----------------------------------------------------------------------+
| S430.v                              13     4       1          0.2438 |
|                      S430           13     4       1                 |
+----------------------------------------------------------------------+
| one_day3.v                          0      0       4          0.0305 |
|                      one_day3       0      0       4                 |
+----------------------------------------------------------------------+
| first_counter.v                     4      3       3          0.0765 |
|                      first_~unter   4      3       3                 |
+----------------------------------------------------------------------+
| Multiplier.v                        7      4       1          0.1646 |
|                      Multiplier     7      4       1                 |
+----------------------------------------------------------------------+
| Sys430.v                            10     12      9          0.5017 |
|                      Sys430         3      12      5                 |
|                      LEDTest        7      0       4                 |
+----------------------------------------------------------------------+
| first_counter_tb.v                  0      1       1          0.0279 |
|                      first_~er_tb   0      1       1                 |
+----------------------------------------------------------------------+
| longtest.v                          9      5       12         2.1130 |
|                      RAMB16_S9      9      5       12                |
+----------------------------------------------------------------------+
| GPR.v                               8      0       3          0.1039 |
|                      GPR            8      0       3                 |
+----------------------------------------------------------------------+
| encoder_u~g_case.v                  3      0       16         0.1384 |
|                      encode~_case   3      0       16                |
+----------------------------------------------------------------------+
| RAMB16_S9.v                         9      5       12         2.0922 |
|                      RAMB16_S9      9      5       12                |
+----------------------------------------------------------------------+
| comment.v                           0      0       1          0.0264 |
|                      comment        0      0       1                 |
+----------------------------------------------------------------------+
| encoder_using_if.v                  3      0       17         0.1941 |
|                      encode~ng_if   3      0       17                |
+----------------------------------------------------------------------+
| MUX2.v                              0      0       1          0.0035 |
|                      INV            0      0       1                 |
+----------------------------------------------------------------------+

First blog post after marriage!

Wed, 16 Jun 2010 14:00:00 GMT

First blog post after marriage! Have updated my Dell Vostro 1310 to Fedora rawhide. The relevant configuration outputs are now made available:
/sbin/lspci
/sbin/lsmod
/boot/grub/menu.lst
dmesg

Updating tcl to tcl-8.5.8-2.fc14 solves 540296. One can now do:

$ tclsh
% package require Tk

Running "mcu8051ide --check-libraries" should now be clean on Fedora:

Checking libraries...
	1/9 Checking for library BWidget
		Library present	... YES
		Version 1.7	... YES
	2/9 Checking for library Itcl
		Library present	... YES
		Version 3.4	... YES
	3/9 Checking for library Tcl
		Library present	... YES
		Version 8.2	... YES
	4/9 Checking for library md5
		Library present	... YES
		Version 2.0	... YES
	5/9 Checking for library crc16
		Library present	... YES
		Version 1.1	... YES
	6/9 Checking for library Tk
		Library present	... YES
		Version 8.5	... YES
	7/9 Checking for library img::png
		Library present	... YES
		Version 1.3	... YES
	8/9 Checking for library tdom
		Library present	... YES
		Version 0.8	... YES
	9/9 Checking for library Tclx
		Library present	... YES
		Version 8.0	... YES
RESULTS:
	Number of fails: 0
	Everything seems ok

Pushed recent mcu8051ide 1.3.7 and vrq 1.0.76 to Fedora repository.

Blender meet, Hyderabad

Mon, 17 May 2010 14:30:00 GMT

Attended May months' Hyderabad user group meeting on Sunday, May 16, 2010 at:

Rhythm & Hues Studios India Pvt. Ltd.
The V, Vega Block, 11th Floor,
Left Wing, Plot No - 17, Software Units Layout
HITEC City, Madhapur, 
Hyderabad 500 081
India

Satish "iloveblender" Goda gave a very informative talk about the history of the Blender project, animation movies created using the Blender software, pipelines involved in animation movie production, and on how the blender community functions in producing open animation movies with the guidance of Ton Roosendaal.

Their open animation movie projects are code named after names of fruits. One interesting aspect is that before starting on a new movie project, one can pay and pre-order the DVD, and your name is added to the credits when the movie is released. This funding also helps the team in producing the movie!

Thanks to the Management of Rhythm & Hues Studios India Pvt. Ltd. for hosting our user group meet at their auditorium. Special thanks to "cheedhu" and "iloveblender" for initiating the effort. We hope to have more sessions of blender and other F/OSS sessions at this venue.

A photo taken at the end of the session:

KMR Foundation

Sat, 08 May 2010 21:00:00 GMT

Visited Sreenidhi International School and members of the KMR Foundation today, Saturday, May 8, 2010 in Hyderabad. They have OLPC XOs that they are using for class(grade) IV students in a school near their premises at Aziznagar, Ranga Reddy district, Andhra Pradesh, India. They require support for Telugu language and use of XO software for the school students. Here is a screenshot of one of the XOs:

perl-Sys-CPU

Fri, 07 May 2010 01:00:00 GMT

Pushed perl-Sys-CPU to Fedora repository. You can use it like:

use Sys::CPU;
  
$number_of_cpus = Sys::CPU::cpu_count();
printf("I have %d CPU's\n", $number_of_cpus);

print "  Speed : ", Sys::CPU::cpu_clock(), "\n";
print "  Type  : ", Sys::CPU::cpu_type(), "\n";

\newcommand macro substitution

Wed, 21 Apr 2010 00:22:00 GMT

Used \newcommand to abstract the four actor names in di-git-ally managing love letters presentation:

\newcommand{\oneactor}{pretty-zinta}
\newcommand{\twoactor}{raaani-mukerji}
\newcommand{\threeactor}{nayantaaara}
\newcommand{\fouractor}{aishvarya-ray}

You can now get the sources from gitorious, and replace the above names to your liking, and rebuild the presentation by invoking make from the sources directory.

mcu8051ide 1.3.5

Tue, 13 Apr 2010 00:11:00 GMT

Pushed recent mcu8051ide 1.3.5 package to Fedora repository that has bug fixes.

Fedora Summer Coding 2010, DGC GTK+ GUI

Mon, 12 Apr 2010 00:10:00 GMT

Inviting prospective students for Digital Gate Compiler (DGC) GTK+ GUI implementation for Fedora Summer Coding 2010. More details are available at Summer Coding 2010 - DGC GTK GUI.

vrq 1.0.74

Mon, 05 Apr 2010 00:22:30 GMT

Pushed recent VRQ (Verilog Parser) 1.0.74 package to Fedora repository.