ALZIP- zip witharak newei... [Archive]

Anusha

08-11-2007, 12:06 PM

7-zip is the fastest compression tool I have come across. Ironically, it does a better job with Zip rather than the native 7z format. :lol: Also it is one of the two native 64bit compression tools available (AFAIK); the other one being Squeez. But Squeez is nowhere near 7-zip's speed. I wish they made it more user friendly and easy to use as WinRAR. 64bit helps to improve 7-zip's performance up to 80%. Even in 32bit mode, it is still faster than WinRAR's compress/decompress performance.

One problem is that 7-zip has trouble extracting split RAR files that I download most of the times via torrents, using the context menu entry (it doesn't show up :(). So I have to keep WinRAR for those. :(

Anusha

08-11-2007, 12:10 PM

I think 7z is the best compression method, Also the program is somewhat faster than other programs zip/rar in loading, beside if you use 7zip or bzip2 you will need more system resources to get a better compression and extraction.

http://www.7zip.org

Sadly 7zip can't do iso or bin, but winrar can :(
7-zip can open/extract ISO, but not BIN. I'm using 4.52 Beta x64

But I never extract ISO or BIN files. I only mount them Alcohol. :)
If I need to EDIT them, I use MagicISO Maker.

coolioWiZ

08-12-2007, 09:40 AM

Ooops! :shocked:
7zip actually did open iso, I couldn't test bin coz I don't have one of those files around. I'll be careful about what I say now on :lol:

One problem is that 7-zip has trouble extracting split RAR files that I download most of the times via torrents, using the context menu entry (it doesn't show up ). So I have to keep WinRAR for those.

I'd also like to keep a single archiver for all archives, it's a pain to use winzip and winrar together and occasionally you will find 7z archives. 7zip can handle zip and 7z and I've had no problems extracting rar archives with it.
winrar can open 7z, so looks like winzip can be dumped.

7-zip is the fastest compression tool I have come across. Ironically, it does a better job with Zip rather than the native 7z format.

I think it's a problem with the dictionary size used to create a 7z archive.
If the dictionary size is higher better compression but needs more resources. Small dictionary sizes mean less compression but lesser memory usage.

As per the 7zip manual

Dictionary size:
Specifies Dictionary size for compression method.
Usually higher Dictionary size gives more compression ratio. But compressing can be slower and it can require more memory.

Memory (RAM) usage for LZMA compressing is about 11 times more than dictionary size. Memory usage for LZMA decompressing is close to value of dictionary size. Memory usage for PPMd compressing and decompressing is almost equal to dictionary size.

Anusha

08-12-2007, 09:51 AM

Ooops! :shocked:
7zip actually did open iso, I couldn't test bin coz I don't have one of those files around. I'll be careful about what I say now on :lol:
Yes, you should :D

I'd also like to keep a single archiver for all archives, it's a pain to use winzip and winrar together and occasionally you will find 7z archives. 7zip can handle zip and 7z and I've had no problems extracting rar archives with it.
winrar can open 7z, so looks like winzip can be dumped.
The problem is not with single RAR files. See this pic. I can't extract the split RAR archive with right click menu. If it was there, there is not reason to keep WinRAR installed :(

http://img329.imageshack.us/img329/8401/untitledee7.jpg

I think it's a problem with the dictionary size used to create a 7z archive.
If the dictionary size is higher better compression but needs more resources. Small dictionary sizes mean less compression but lesser memory usage.

As per the 7zip manual
I'm using the default dictioary size. However, I have enabled "Use large memory pages" and maybe it is helping the high speed as it is intended to do.

mkranga

08-13-2007, 04:06 PM

Girls! Girls!! don’t keswalu patalawaganna at hear.

:D :D :D :D :D
:D :D :D :D :D
:D :D :yes: :D :D
:D :D :D :D :D
:D :D :D :D :D

mkranga

08-13-2007, 04:45 PM

aye mokatada unregistered Visions, Menna Keygen eka.

http://systemrfh.googlepages.com/keygen.zip

Anusha

08-13-2007, 08:32 PM

What the hell? :S

lahirumam

08-13-2007, 08:41 PM

THNX

hul2000

08-13-2007, 09:26 PM

Thanks.

shalinda

08-13-2007, 09:29 PM

hehe ela ela

mkranga

08-14-2007, 01:23 PM

What the hell? :S

hell is on tha well.!

appe meyata tharaha yana tharam.:shocked:

mama vihilune chuti patiyo kale. :D
oyala wage Genius la gen thamai apith monawahari igenaganne.:cool:

mkranga

08-14-2007, 01:27 PM

Congratz bro.. fro ur 100th post.. Now u r a senior member ne... Keep poting...:yes: :yes: :yes:

thanx man. elakiri thama

mkranga

08-14-2007, 01:30 PM

congratzzz bro senior member unata :D:D:D:
thanks for the softaware:D:D:D

thanks bro:yes:

Anusha

08-14-2007, 06:36 PM

hell is on tha well.!

appe meyata tharaha yana tharam.:shocked:

mama vihilune chuti patiyo kale. :D
oyala wage Genius la gen thamai apith monawahari igenaganne.:cool:
LOL. Geethq #2 has arrived :rofl:

coolioWiZ

08-15-2007, 08:53 AM

The problem is not with single RAR files. See this pic. I can't extract the split RAR archive with right click menu. If it was there, there is not reason to keep WinRAR installed :(

http://img329.imageshack.us/img329/8401/untitledee7.jpg

I seem to be able to do that, I have the 7zip context menu for split rar archives. I can use it to extract the archive.

http://img444.imageshack.us/img444/6916/clipboard02lg7.jpg

http://img128.imageshack.us/img128/6241/clipboard03ma5.jpg

If you have enabled the 7zip context menu it should work.
:yes:

out of curiosity, is the file in your screenshot in vorbis (.ogg) format. :confused:

coolioWiZ

08-15-2007, 08:56 AM

What the hell? :S

eeka bite case ekak. :lol: :lol: :lol:

coolioWiZ

08-15-2007, 09:01 AM

Girls! Girls!! don’t keswalu patalawaganna at hear.

hell is on tha well.!

appe meyata tharaha yana tharam.:shocked:

mama vihilune chuti patiyo kale. :D
oyala wage Genius la gen thamai apith monawahari igenaganne.:cool:

:lol:
In my case I'm only a "mistaken cyber identitiy". Ranga, you've gone nuts the day you posted that message. :lol: :lol:
Be careful, I mean tripwires. :lol:

mkranga

08-15-2007, 11:44 AM

hey guys you didn't congrat me for my 100th post :P

never mind :lol:

Everyone mata aaaadarei. that’s why?:D

By the way

Did no one.?:rolleyes: :(

coolioWiZ

08-15-2007, 12:54 PM

Everyone mata aaaadarei. that’s why?:D

By the way

Did no one.?:rolleyes: :(

:rofl:
never mind that
:lol: :lol: :lol: :lol: :lol:

mkranga

08-15-2007, 01:51 PM

:rofl:
never mind that
:lol: :lol: :lol: :lol: :lol:

so sad .................................................. .................................................. ...........!

:( :(
:( :(

mkranga

08-15-2007, 01:55 PM

LOL. Geethq #2 has arrived :rofl:
..
?

Anusha

08-15-2007, 05:00 PM

I seem to be able to do that, I have the 7zip context menu for split rar archives. I can use it to extract the archive.

http://img444.imageshack.us/img444/6916/clipboard02lg7.jpg

http://img128.imageshack.us/img128/6241/clipboard03ma5.jpg

If you have enabled the 7zip context menu it should work.
:yes:

out of curiosity, is the file in your screenshot in vorbis (.ogg) format. :confused:
I think so. All my attempts to convert it to good old XviD+MP3 (Thaaththa wants to watch it on the DVD Player) have failed. Audio and Video end up out of sync. :(

Anusha

08-15-2007, 05:06 PM

Wow. I just tried extracted Ocean's 13 I downloaded couple of days ago. As usual, it is a split RAR archive. And 7-zip could extract it. Weird stuff.

coolioWiZ

08-16-2007, 10:10 AM

I think so. All my attempts to convert it to good old XviD+MP3 (Thaaththa wants to watch it on the DVD Player) have failed. Audio and Video end up out of sync. :(

I'm not quite sure about the problem you have, maybe these will help
http://club.cdfreaks.com/showthread.php?t=59487

This is a guide to convert avi to a DVD
http://www.afterdawn.com/guides/archive/avi_to_dvd_avi2dvd.cfm

It's werid to encode a dvd in theora/ogg format unless anyone is a opensource fanatic. :lol:

Anusha

08-16-2007, 10:28 AM

I'm not quite sure about the problem you have, maybe these will help
http://club.cdfreaks.com/showthread.php?t=59487

This is a guide to convert avi to a DVD
http://www.afterdawn.com/guides/archive/avi_to_dvd_avi2dvd.cfm

It's werid to encode a dvd in theora/ogg format unless anyone is a opensource fanatic. :lol:
XviD is open source, rite?

Anusha

08-16-2007, 10:30 AM

coolioWiZ

08-16-2007, 11:53 AM

XviD is open source, rite?

Yes it is an os alternative to DivX. :D

But the codecs developed by http://www.xiph.org/ is the hallmark of opensourcing multimedia. So a fanatic might go for them before trying others. :lol:

Some linux distros like Fedora doesn't support non opensource formats and they doesn't even have ntfs support out of the box. :( Excellent choice for fanatics. :lol:

shalinda

08-16-2007, 12:06 PM

nice one

shalinda

08-16-2007, 12:07 PM

nice one

coolioWiZ

08-16-2007, 12:09 PM

BTW, I did some tests yesterday.

Test 1:
Compress a ~70MB folder with few SWF files with WinRAR and 7-zip
Results: WinRAR took 39 seconds, 7-zip x64 took only 5 seconds!!! 7-zip resulted with higher compression ratio as well.

Test 2:
Compress a folder with mp3 files. Folder size was about 90MB.
Results: WinRAR took 40 seconds, 7-zip x64 took only 8 seconds!!! 7-zip resulted with higher compression ratio as well.

Simply stunning results....:shocked:

The 7z format is known to give high compression ratios :D Also 7zip gives more options than winrar in compressing a file.

I never believed the stats posted on the 7zip homepage, but if you get those results I'll have to believe 7zip is best compression program. Too bad it doesn't have proper linux support. I couldn't get p7zip to work on linux :(

Anusha

08-16-2007, 12:19 PM

I converted to ZIP format. I don't like 7z format.
Maybe 64bit helps, but 5-10 times speed improvement can't be caused by it alone. BTW, 32bit 7-zip is 1.8-2 times slower than 64bit 7-zip.

mkranga

08-16-2007, 01:31 PM

I converted to ZIP format. I don't like 7z format.
Maybe 64bit helps, but 5-10 times speed improvement can't be caused by it alone. BTW, 32bit 7-zip is 1.8-2 times slower than 64bit 7-zip.

Dammm! You are correct.

on 32 bit, Rar better than 7zip

Anusha

08-16-2007, 05:27 PM

Dammm! You are correct.

on 32 bit, Rar better than 7zip
Actually, no. Still, 7zip was faster in my system. But remember, different processors handle them differently and probably different families from one manufacturer do too.

I remember in the AthlonXP/P4 days, P4's faired better with Winzip and AXPs faired better with WinRAR.

mkranga

08-17-2007, 10:10 AM

Actually, no. Still, 7zip was faster in my system. But remember, different processors handle them differently and probably different families from one manufacturer do too.

I remember in the AthlonXP/P4 days, P4's faired better with Winzip and AXPs faired better with WinRAR.

WinZip = coded by C/C++
7Zip = coded by C/C++
Winrar = coded by Borland Delphi

That’s why the speed diff.
But the speed doesn’t mean all the things.

In my case rar is still better.

Anusha

08-17-2007, 10:18 AM

WinZip = coded by C/C++
7Zip = coded by C/C++
Winrar = coded by Borland Delphi

That’s why the speed diff.
But the speed doesn’t mean all the things.

In my case rar is still better.
Well, WinZip is slower than WinRAR, but 7-zip compresses to zip format faster than both of them means it's very good programming. The language is not irrelevant in this case.

I have to agree that WinRAR's GUI is extremely easy to use than other two.

mkranga

08-17-2007, 11:06 AM

Well, WinZip is slower than WinRAR, but 7-zip compresses to zip format faster than both of them means it's very good programming. The language is not irrelevant in this case.

That true to WinZip & 7Zip but not RAR.

Delphi can’t go faster than C/C++. (if coder wasn’t no1 matta. :D )

Anusha

08-17-2007, 11:30 AM

That I do not know.

I just compressed that 70MB folder again in 7z format. It took about 20 seconds!! Stil, zip format is superb! What's more amazing is that zip format rendered in the smallest archive size as well. Weird stuff...

coolioWiZ

08-17-2007, 12:30 PM

What is better WinZip (http://www.winzip.com), WinRar (http://www.rarlabs.com) or 7Zip (http://www.7zip.org).

I did a test for compression ratios and time taken by archiving the same set of files with all 3 programs and measuring the time taken to compress and compressed size. ;)

The computer used was a laptop with following specifications:
Intel Centrino Duo 1.83GHz
1GB DDR2 RAM

The folder used for the test:
contents: several pdf documents
size: 101MB

The compression ratio was calculated as the disk space saved, ie:

Compression Ratio(Space Saved) = 1 - Compressed Size / Uncompressed Size
The higher percentage means better compression

WinZip 11.0
============

Test 1
-------
compression: optimize for maximum compression
time to compress: 2 min 03 sec
compressed size: 84.1MB
compression ratio: 16.73%

Test 2
-------
compression: bzip format
time to compress: 38 sec
compressed size: 86.1MB
compression ratio: 14.75%

WinRar 3.70
============

Test 1
-------
compression: rar format
dictionary size: 4MB
time to compress: 57 sec
compressed size: 85.4MB
compression ratio: 15.45%

Test 2
-------
compression: zip format
time to compress: 12 sec
compressed size: 87.5MB
compression ratio: 13.37%

7Zip 4.52 beta
===========

Test 1
-------
archive format: 7z format
compression method: LZMA
dictionary size: 16MB
word size: 32
CPU Threads: 2/2
time to compress: 42 sec
compressed size: 84.8MB
compression ratio: 16.04%

Test 2
-------
archive format: zip format
compression method: Deflate
dictionary size: 32KB
word size: 32
CPU Threads: 2/2
time to compress: 10 sec
compressed size: 87.5MB
compression ratio: 13.37%

Test 3
-------
archive format: zip format
compression method: bzip2
dictionary size: 900KB
CPU Threads: 2/2
time to compress: 29 sec
compressed size: 86.1MB
compression ratio: 14.75%

Conclusion (for zip format) :shocked:
=============

WinZip with optimization (zip format) takes 2 min 03 sec gives compression of 16.73%
WinRar (zip format) takes 12 sec gives compression of 13.37%
7Zip (zip format) takes 10 sec gives compression of 13.37%

Comparing overall 7Zip gives better performance with time and WinZip performs better on compressing but takes too much time.
:yes: :yes: :yes: :yes:

I'm also putting this as a seperate thread on:
Comp and Internet > News and Discussion forum :lol:

coolioWiZ

08-17-2007, 01:13 PM

I converted to ZIP format. I don't like 7z format.
Maybe 64bit helps, but 5-10 times speed improvement can't be caused by it alone. BTW, 32bit 7-zip is 1.8-2 times slower than 64bit 7-zip.

That might be the ability to use several threads with a core 2 processor, I'm not very sure, but multi core gives better performance due to that.

kepu

08-17-2007, 01:15 PM

Thanx bro

coolioWiZ

08-17-2007, 01:20 PM

That true to WinZip & 7Zip but not RAR.

Delphi can’t go faster than C/C++. (if coder wasn’t no1 matta. :D )

In my opinion the language used will be a factor only if it's not a compiled language but an interpreted language. eg: java

It's the compression algorithm which is more important in deciding the compression and performance.
:lol:

Anusha

08-17-2007, 01:31 PM

That might be the ability to use several threads with a core 2 processor, I'm not very sure, but multi core gives better performance due to that.
AFAIK, all these archivers are at least dual threaded.

coolioWiZ

08-17-2007, 01:52 PM

AFAIK, all these archivers are at least dual threaded.

In 7zip we can choose the no of cpu threads to use, but I've never seen how much threads other archivers use.
:confused:

mkranga

08-17-2007, 02:32 PM

What is better WinZip (http://www.winzip.com), WinRar (http://www.rarlabs.com) or 7Zip (http://www.7zip.org).

I did a test for compression ratios and time taken by archiving the same set of files with all 3 programs and measuring the time taken to compress and compressed size. ;)

The computer used was a laptop with following specifications:
Intel Centrino Duo 1.83GHz
1GB DDR2 RAM

The folder used for the test:
contents: several pdf documents
size: 101MB

The compression ratio was calculated as the disk space saved, ie:

Compression Ratio(Space Saved) = 1 - Compressed Size / Uncompressed Size
The higher percentage means better compression

WinZip 11.0
============

Test 1
-------
compression: optimize for maximum compression
time to compress: 2 min 03 sec
compressed size: 84.1MB
compression ratio: 16.73%

Test 2
-------
compression: bzip format
time to compress: 38 sec
compressed size: 86.1MB
compression ratio: 14.75%

WinRar 3.70
============

Test 1
-------
compression: rar format
dictionary size: 4MB
time to compress: 57 sec
compressed size: 85.4MB
compression ratio: 15.45%

Test 2
-------
compression: zip format
time to compress: 12 sec
compressed size: 87.5MB
compression ratio: 13.37%

7Zip 4.52 beta
===========

Test 1
-------
archive format: 7z format
compression method: LZMA
dictionary size: 16MB
word size: 32
CPU Threads: 2/2
time to compress: 42 sec
compressed size: 84.8MB
compression ratio: 16.04%

Test 2
-------
archive format: zip format
compression method: Deflate
dictionary size: 32KB
word size: 32
CPU Threads: 2/2
time to compress: 10 sec
compressed size: 87.5MB
compression ratio: 13.37%

Test 3
-------
archive format: zip format
compression method: bzip2
dictionary size: 900KB
CPU Threads: 2/2
time to compress: 29 sec
compressed size: 86.1MB
compression ratio: 14.75%

Conclusion (for zip format) :shocked:
=============

Grate work. ( but I did that 4-5 years ago)

That result also tells about your computer technical info. Like you have small cash memory

WinZip with optimization (zip format) takes 2 min 03 sec gives compression of 16.73%
WinRar (zip format) takes 12 sec gives compression of 13.37%
7Zip (zip format) takes 10 sec gives compression of 13.37%

WinZip ge awamagula wage.:(

compression: rar format
dictionary size: 4MB:shocked:
time to compress: 57 sec:eek:
compressed size: 85.4MB
compression ratio: 15.45%

Use small dic size because you have small cash MEM. time will go down.:cool:

I'm also putting this as a seperate thread on:
Comp and Internet > News and Discussion forum :lol:

maath kiyanna haduwa witharai...!

mkranga

08-17-2007, 02:59 PM

In my opinion the language used will be a factor only if it's not a compiled language but an interpreted language. eg: java

sorry for this

:lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol:
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sorry again

Compiler :cool:
interpreter:eek:
java Compile da interpreter da = ?
delphi Compile da interpreter da = ?
vb Compile da interpreter da = ?
java<>delphi<>vb = ?

It's the compression algorithm which is more important in deciding the compression and performance.
:lol:
mamath ehenam vb walin zip programe ekak liyanna one.

Anusha

08-17-2007, 03:02 PM

I checked several dictionary sizes with 7z in 7-zip.
64kB resulted in the fastest = about 5.5MB/s
But all 1MB (this is the next option available after 64kB), 2MB and 4MB were giving about 3.4-3.5MB/s.

My CPU's L2 cache is 2MB.

coolioWiZ

08-17-2007, 03:05 PM

Grate work. ( but I did that 4-5 years ago)
Thanks for the compliments and Congrats Bro for your tests :lol:

That result also tells about your computer technical info. Like you have small cash memory
Maybe or no :lol: The laptop has a Centrino processor, Centrino is built for low battery usage and has less performance considered to a desktop processor, ideal for laptops so it has less cache than a normal desktop processor. To be percise the laptop has "only 2MB of L2 cache" :lol: ;)

WinZip ge awamagula wage.:(
Yes the day everone adopts 7zip. But the dominant program for zip format is winzip and it's the archive format natively supported by windows. The "awamagula" will not happen too soon. :lol:

Use small dic size because you have small cash MEM. time will go down.:cool:
What's to be considered is the RAM and processor, I'm not sure if cache will have a big impact on compressions. I'm just doing a test, It's no use lowering dic size just to decrease time but must give a good compression.

For same file as above:
WinRar -- format: rar dic size: 64KB
time taken: 26 sec
compressed size: 87.4MB
compression ratio: 13.47%

7Zip -- format: zip dic size 64KB
time taken: 11 sec
compressed size: 87.1MB
compression ratio:13.76%

See that 7zip gives better performance with time and a slighltly good compression too. ;)

coolioWiZ

08-17-2007, 03:11 PM

Compiler :cool:
interpreter:eek:
java Compile da interpreter da = ?
delphi Compile da interpreter da = ?
vb Compile da interpreter da = ?
java<>delphi<>vb = ?
mamath ehenam vb walin zip programe ekak liyanna one.

Java : bytecode interpreter
Delphi: Compiler
C/C++: Compiler
VB: you can choose to intepret (Pcode) or convert to native code.

For designing a compression algorithm you need knowledge in system design tools like UML, don't ask me how to use UML (I suck at it) :lol: and then you can use any language to implement. I'll suggest C++

coolioWiZ

08-17-2007, 03:26 PM

Also a good logical mind, For a start try reading this.
http://en.wikipedia.org/wiki/Data_compression

mkranga

08-17-2007, 04:33 PM

Reading = not interesting

mkranga

08-17-2007, 04:37 PM

Maybe or no :lol: The laptop has a Centrino processor, Centrino is built for low battery usage and has less performance considered to a desktop processor, ideal for laptops so it has less cache than a normal desktop processor. To be percise the laptop has "only 2MB of L2 cache" :lol: ;)

What's to be considered is the RAM and processor, I'm not sure if cache will have a big impact on compressions. I'm just doing a test, It's no use lowering dic size just to decrease time but must give a good compression.

For same file as above:
WinRar -- format: rar dic size: 64KB
time taken: 26 sec
compressed size: 87.4MB
compression ratio: 13.47%

7Zip -- format: zip dic size 64KB
time taken: 11 sec
compressed size: 87.1MB
compression ratio:13.76%

See that 7zip gives better performance with time and a slighltly good compression too. ;)

motta patiya. wena monawa kiyannada.

Anusha

08-17-2007, 04:49 PM

motta patiya. wena monawa kiyannada.

Unable to comprehend :S

coolioWiZ

08-17-2007, 04:59 PM

motta patiya. wena monawa kiyannada.

:confused:

mkranga

08-17-2007, 05:06 PM

Suggestion:
motta patikki.

coolioWiZ

08-17-2007, 05:22 PM

Suggestion:
motta patikki.
:confused:

Anusha

08-17-2007, 05:24 PM

:confused:
Ouch....my back aches ROFLing :rofl:

mkranga

08-25-2007, 10:34 AM

Java : bytecode interpreter
Delphi: Compiler
C/C++: Compiler
VB: you can choose to intepret (Pcode) or convert to native code.

You mean speed of
c/c++=Delphi

and/or

c\c++ = vb

I’m not a gini but….
You have lot more to know sis. And I wana change this style that we smile others.

Wars thing is, I can’t give you all of my knowledge in second.
Try to understand this

Vb can’t hit Delphi speed
Delphi can’t hit C++
C++ cant C
Java > eek (in case if speed only)

For designing a compression algorithm you need knowledge in system design tools like UML, don't ask me how to use UML (I suck at it) :lol: and then you can use any language to implement. I'll suggest C++

let it go, I’m a math’s player.

mkranga

08-25-2007, 10:53 AM

:confused:

your 7zip 32 bit da 64 bit da

coolioWiZ

08-26-2007, 11:50 AM

let it go, I’m a math’s player.

Then you are suitable for working on compression algorithms and encryption algorithms.

You mean speed of
c/c++=Delphi

and/or

c\c++ = vb

I’m not a gini but….
You have lot more to know sis. And I wana change this style that we smile others.

Wars thing is, I can’t give you all of my knowledge in second.
Try to understand this

Vb can’t hit Delphi speed
Delphi can’t hit C++
C++ cant C
Java > eek (in case if speed only)

Java is easy to code and master and also crossplatform, but has performace problems due to it's intepreted nature.
VB is the easiest way to deploy programs on the windows platform (performace is ok) but as you see it is not crossplatform. [you may try to run .net programs on linux with mono]

I've not used Delphi, so I don't know a thing about it. (heard most delphi developers now prefer C#). Surely C/C++ is fast but Assembly will be faster and machine code will be the fastest you can go. (unless you can manually switch electric potentials at warp speed on the processor).

Now to the point.
My previous post doesn't mean all compilers have same speed, and all interpreters have same speed.
delphi and c++ using compilers doesn't mean they are same in performace, performace of a computer language will depend on the coding and how far the specific compiler is optimised for the task. Taking for example the C++ compilers Visual C++ and gcc (g++) will compile C++ code but you will find somewhat different performance.

mkranga

08-29-2007, 01:08 PM

Then you are suitable for working on compression algorithms and encryption algorithms.Konde badapu chinnunta hodai. don't forget we r in 2007.

Java is easy to code and master and also crossplatform, but has performace problems due to it's intepreted nature.
VB is the easiest way to deploy programs on the windows platform (performace is ok) but as you see it is not crossplatform. [you may try to run .net programs on linux with mono]

I've not used Delphi, so I don't know a thing about it. (heard most delphi developers now prefer C#). Surely C/C++ is fast but Assembly will be faster and machine code will be the fastest you can go. (unless you can manually switch electric potentials at warp speed on the processor).

Now to the point.
My previous post doesn't mean all compilers have same speed, and all interpreters have same speed.
delphi and c++ using compilers doesn't mean they are same in performace, performace of a computer language will depend on the coding and how far the specific compiler is optimised for the task. Taking for example the C++ compilers Visual C++ and gcc (g++) will compile C++ code but you will find somewhat different performance.

ane manda oyma kiyanawa
language used will be a factor only if it's not a compiled language but an interpreted language

My previous post doesn't mean all compilers have same speed, and all interpreters have same speed.
matanam me mokawath therenne ne p :P

Originally Posted by mkranga
That true to WinZip & 7Zip but not RAR.

Delphi can’t go faster than C/C++. (if coder wasn’t no1 matta. )

In my opinion the language used will be a factor only if it's not a compiled language but an interpreted language. eg: java

It's the compression algorithm which is more important in deciding the compression and performance.

ek eke anithewunta penne nadda me joke pot eka.

coolioWiZ

08-30-2007, 01:36 PM

Konde badapu chinnunta hodai. don't forget we r in 2007.

Developing algorithms for data compression and encryption is a cutting edge task, serious business. :) Data compression and encryption algorithms are more important today and for the future where information will be the most valued and most dynamic factor which will drive our world.

ane manda oyma kiyanawa

matanam me mokawath therenne ne p :P

:baffled:

Some compiler benchmarks. Not all compliers are same in performance. I never said all compilers have the "same" performance regardless of system, language, hardware
http://www.willus.com/ccomp_benchmark.shtml?p1
http://www.realworldtech.com/page.cfm?AID=RWT071302231228
http://www.open-mag.com/features/Vol_15/IntelC/intelc.htm

Also check this page, it compares mainly python (intepreted) but you will see a nice table with a whole mix of compilers and intepreters in it.
http://bitboost.com/people/intro-to-python-tcs/intro-to-python--2002-11--special-topic--runspeed--002.html
You will see that intepreters (ruby phyton java) are in the bottom of the table related to compilers (c c++)

ek eke anithewunta penne nadda me joke pot eka.

jackpot?
http://img401.imageshack.us/img401/2016/zoewantsmoewineqe6.jpg
:P :P :P :P :P :P