Hi Friends
I am writing a program in c where i am sorting more than 3 GB of data (data is in a file , Input from a file) , i am using the sort command provided by unix . I am running the program in Fedora Core 5.
But the Sort Command is not sorting this enormous amount of data (Greater than 3 GB) .
First it was giving Error " Insufficient Space Left on Device "
Then i freed some space, but again sort failed after creating intermediate files of big size .
So i need help from you all.
Thank You in Advance
2  1410  Savage 1,764
Recognized Expert Top Contributor
Hi,
Did you try to break data on smaller packages and then sort it?
Savage.
JosAH 11,448
Recognized Expert MVP
That reminds me of the GOD (Good Old Days (tm)) of a lack of memory, slow
devices and even slower processors ;-)
If your file has a size of 3GB you need at least another 3GB of free diskspace
to do the following:
1) read chunks of that file, the chunk size is, say 128MB; you can sort such
a chunk internally. Write each chunk to a temporary file, say t_0, t_1 ... t_23.
2) throw away your original file.
3) open each file t_i and merge them together (that's easy and it doesn't take
much internal memory). Write the result to the new sorted file.
4) close everything and throw away the temp files t_0, t_1 ... t_23
kind regards,
Jos
Sign in to post your reply or Sign up for a free account.
Similar topics | |
by: tsirman |
last post by:
hello i have the above code and i can't sort my data in the second
column.
if someone did not understood i want to say that i have splitted my
data in two columns so now i want these data to be sorted.
------------------------------------
<?xml version="1.0"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:template match="code">
|
by: Kent |
last post by:
Hi!
I want to store data (of enemys in a game) as a linked list, each node will
look something like the following:
struct node
{
double x,y; // x and y position coordinates
struct enemy *enemydata; // Holds information about an enemy (in a game)
// Its a double linked list node
|
by: Frank King |
last post by:
Hi,
I am using CArray and quick sort funciton to sort an array
of double type of data points. I found an article in MSDN
HOWTO: Quick Sorting Using MFC CArray-Derived Classes
ID: Q216858
The article works well with CStringArray. But when I wrote
the following code about double type. It does not work for
|
by: irishdudeinusa |
last post by:
Hello Everyone,
I have been working a webservice where I can use it in other
applications that I am working on. However, I am running into a problem
with the data returned and I was wondering if someone could help.
This is the code for the method that I call
<WebMethod()Public Function GetZipCodes(ByVal iZipCode As Integer,
ByVal iMiles As Integer) As String
|
by: ajc308 |
last post by:
I have an XML document that looks like the following:
<root name="PlanRepository">
<directory name="connoraj">
<directory name="single_run1">
<file>insidebox.txt</file>
<file>outsidebox.txt</file>
<directory name="SAFE_Input">
<file>leapseconds.txt</file>
| | |
by: Brit |
last post by:
I have an ASP file that retrieves names from an Access database for 4 different categories of membership, which the visitor to the page selects (corporate, institutional, regular, or student). The DNS name is "cati", the names are specified in the "Last_names" field, and the categories are in the "categories" field.
l want the results sorted in alphabetic order by last name. However, the results appear to be in a totally random,...
|
by: jeremit0 |
last post by:
I'm trying to sort a vector<complex<double and can't figure it
out. I recognize the problem is that there isn't a default operator<
for complex data types. I have written my own operator and can use
it, but std::sort doesn't seem to find it. I have copied a very
simple example below. Everything compiles just fine when the line
with std::sort function is commented out, but with that line included
a whole slew of errors are given like:
...
|
by: Gestorm |
last post by:
Suppose we have an array a, the idea is: build another array, int
next, for each 0<i<N, next = next position of a in the sorted
array, if a is the max, then next is undefined. For example, let
the unsorted array is
a = {5, 4, 2, 1, 3};
then
next
would be
{undefined, 0, 4, 2, 1}
after sorted.
|
by: aRTx |
last post by:
I have try a couple of time but does not work for me
My files everytime are sortet by NAME.
I want to Sort my files by Date-desc.
Can anyone help me to do it?
The Script
<?
/*
ORIGJINALI
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
| | |
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
| | |
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| |
