gridsim-users — For general queries and feedbacks

[GridSim-users] question

[malihe s. <mal...@ya...>]

Hello
I’m trying to write some codes to solve my thesis problems. I will use gridsim software for simulation job scheduling Algorithm. May you tell me, which class to be useful for Optimizing the time?
Best Regards

[GridSim-users] data replication

[suguna <sug...@gm...>]

how to write coding for data replication using centralized data replication
algorithm.please help me to write

[GridSim-users] thanks

[malihe s. <mal...@ya...>]

Thank you mr Abdul Zummerwala.

[GridSim-users] question

[malihe s. <mal...@ya...>]

merci.

but I execute gridsim.jar for compile in dos.
I for execute examples of gridsim should they open in the netbeans?
you can tell me how is output?is text?
 
I intend write a scheduling algorithm, but I do not know in which part should be written?
 
For creating user in gridsim i can use from visual modeler?Can be linked?
 

[GridSim-users] question

[malihe s. <mal...@ya...>]

hello
 
When I run GridSim.jar, I have the following error message(I planted netbeans7 and gridsim 5):
 
failed to load main-class manifest attribute from c:\gridsm\jars\gridsim.jar

[GridSim-users] Question

[malihe s. <mal...@ya...>]

hello
 
When I run GridSim.jar, I have the following error message:
 
failed to load main-class manifest attribute from c:\gridsm\jars\gridsim.jar
 

[GridSim-users] Question

[malihe s. <mal...@ya...>]

hello
 
When I run GridSim.jar, I have the following error message:
 
failed to load main-class manifest attribute from c:\gridsm\jars\gridsim.jar
 

[GridSim-users] question on ploting some performance parametrs of gridlets

[SARDOR H. <rod...@ma...>]

Hello everyone. I want to finish my paper as soon as possible. So I need some help on plotting results of performance parameters. Is there any methods or classes for plotting in GridSim. 
Thank you in advance!

[GridSim-users] The main class in GridSim project

[sara s. <sar...@gm...>]

Hi,

I have GridSim5-2, Java 1.6 and MyEclipse 10 on my system. When I run
an example(example 4) of DataGrid in MyEclipse, it gives me this
error:

Could not find the main class: path\to\example\MainClass.java.
Program will exit.

Please give me some points ...

Cheers

[GridSim-users] A missing folder in Readme

[Arindam D. <dar...@gm...>]

I have a Question : In GridSim *Readme* file there's a folder like  /eduni
under the folder /doc like the following :
doc/
     eduni/

which is unfortunately missing. Can anyone explain this?
-- 
Arindam Das.
GridSim User

[GridSim-users] Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: unable to create new native thread -> ERROR

[hadi a. <had...@ya...>]

 Hi,
I'm working on a paper and need to do simulations in Gridsim. But when my nodes are more than about 800, I received this error:

    Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: unable to create new native thread

Would you pleases
 tell me how to overcame to this error.
 
Best Regards.
----------------------------------------------- 
Hadi Adineh .
Faculty member of Payam Noor University, IT Dept.
Web Site : vhadi.com
Administrator, Designer and Strategist of : Hadi Virtual World & pnuvu.ir

[GridSim-users] (no subject)

[Amani G. <ama...@ba...>]

hello

regards example 6 i want to make sure of some details:

1- it has 3 users apply their workload Gridlet into 3 different machines  Resources and we compute the time cost of getting the answer?

2- in my simulation i can change the file input size or the speed of machine or MI ?  to get various results and study the effects ?

3- if the above is right what else do you think i can change to draw in my excel graph?

please i am new to Grid sim i know i must spent more time in it but really i have just week to finish this so any help or advice is highly appreciated

thanks



Amani Goniemat


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[GridSim-users] example 6

[amani <ros...@ya...>]

hi 


i am working on example 6 of gridsim i was able to compile and run it but i don't understand it !!!
what parameter i can change is it just 3 users want to access 3 resources and we want to compute the access time??
the parameters that i can change in my simulation?
any ideas or useful resource help plz

[GridSim-users] submission confirmation to gridsim users

[amani <ros...@ya...>]

hi

i finished downloading gridsim on ubuntu 12.04 and ran ezample 1,2 .. but exaple 6 give me the following error 

Note: example06/Example6.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

why what can i do?
Regards
Amani

[GridSim-users] gridsim error

[Amani G. <ama...@ba...>]

hi

i finished downloading gridsim on ubuntu 12.04 and ran ezample 1,2 .. but exaple 6 give me the following error

Note: example06/Example6.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

why what can i do?
Regards
Amani




This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system.

[GridSim-users] error

[amani <ros...@ya...>]

hi

i finished downloading gridsim on ubuntu 12.04 and ran ezample 1,2 .. but exaple 6 give me the following error 

Note: example06/Example6.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

why what can i do?
Regards
Amani

[GridSim-users] question

[navjot g. <jot...@gm...>]

plz someone tell me what is the procedure of implementing max-min
scheduling algorithm in gridsim. plzzzzzz it would be a great help.

thanx

[GridSim-users] (no subject)

[navjot g. <jot...@gm...>]

hi i am doing my thesis using gridsim. i need to impement grid scheduling
algorithms and analyse their performance using grid sim..plz tell me which
example to follow or do i need to modify some example for my algorithm or
what to do...plz help

[GridSim-users] Question for a network with multiple links

[Nirali N. <nir...@gm...>]

Hello All,

I am quite new to Gridsim and i am trying to set up a fully connected
network where each node is linked to each other node.
Each node has computations to do and parameters to pass to other nodes.
I tried the first example in "network" folder for 2 users. However that
does not accept multiple links for multiple users.
Can someone please help with guidance regarding which example would be apt
for my situation.

-- 
Thanks and Regards,
-------------------------------
Nirali Nanavati
Research Scholar
SVNIT, Surat

[GridSim-users] Want to develop new Back Filling Algorithm

[farah i. <far...@gm...>]

hi,i am doing my mtech project in grid computing in Advance Resource
Reservation and with that i want to combine the new back filling algorithm.
i am done with user,resources and scheduler for communication, and advance
reservation also working too good,but for back filling i want free PE and
time slots from resources. but ARResources should use ARSimpleSpaceShared
policy and this policy not allowed queryFreePE and queryFreeTime,and also
not allowing to process 1 gridlet on more than 1 PE. so please anybody help
me out and tell me what to do? what policy should i use. if i go for
parallelResource so which AllocPolicy allow more than 1 PE for 1 gridlet.
OR
should i need to write down new policy for this?
actually i am working on it but suppose any body have better solution than
this,so please share that with me.

thank you so much in advance.

Have Happy Grid!!!! :-)

-- 
Warm Regards,
Farahnaj Inamdar.
:-)

[GridSim-users] Want to develop new Back Filling Algorithm

[farah i. <far...@gm...>]

hi,i am doing my mtech project in grid computing in Advance Resource
Reservation and with that i want to combine the new back filling algorithm.
i am done with user,resources and scheduler for communication, and advance
reservation also working too good,but for back filling i want free PE and
time slots from resources. but ARResources should use ARSimpleSpaceShared
policy and this policy not allowed queryFreePE and queryFreeTime,and also
not allowing to process 1 gridlet on more than 1 PE. so please anybody help
me out and tell me what to do? what policy should i use. if i go for
parallelResource so which AllocPolicy allow more than 1 PE for 1 gridlet.
OR
should i need to write down new policy for this?
actually i am working on it but suppose any body have better solution than
this,so please share that with me.

thank you so much in advance.

Have Happy Grid!!!! :-)

-- 
Warm Regards,
Farahnaj Inamdar.
:-)

[GridSim-users] Flow network model accuracy issue

[Martin Q. <mar...@lo...>]

Hello,

I was curious about the kind of accuracy that could be expected from
the flow based model, so I decided to run an example that would be
simple enough to be computed by hand, just to see.

I simplified one of the provided examples to get a fully symmetric
backbone, with 2 flows of the same size starting at the same time. 

The expected outcome is that the flows terminate at the same time,
about twice the time to send a single message without contention on
the backbone link.  But instead, only one of the flows seem to share
the bandwidth on the bottleneck link while the other doesn't.

That is to say that sending a single flow takes 83.2 seconds while
when sending 2 flows, one of them takes 83.2 seconds while the other
takes 163.8. 

My question here is to know whether I did something wrong in my test
case (attached to this mail), or whether this, as it seems, a bug in
GridSim. I'm using GridSim v5.2.

If someone has a fix or a workaround to solve my problem, please help. 


Thanks in advance,
Mt.

[GridSim-users] Authentication server

[adinath w. <adi...@gm...>]

how to set up server in the gridsim tool.
there is any classes for the security related then send me link for that
classes.


-- 
A.M.Wade

[GridSim-users] Timming question

[Alexandre S. <al...@ue...>]

Dear GridSim users,

one of my colleagues is using GridSim. She is developing a specific 
broker and has obtained good results so far.
Thanks the development team for GridSim, by the way...

We have now, however, a problem because we want use close-to-real numbers.

In some points we can define time related parameters such as channel 
baud rates, MIPS, and so far... We assumed first that the base time unit 
was "seconds" based on some comments in the Example codes. But, browsing 
SimJava and GridSim documentation we have noticed slightly different 
references regarding time: (abstract) "time units", seconds and 
miliseconds as references.

Here is the specific problem: in some points we have to define delays:

1) super.gridSimHold(20);
==> Are we delaying 20 seconds? 20 milliseconds? or simply 20 time units?

2) super.send(get_id(), 60.0*60.0, GridSimTags.BROKER_TICK);
==> In the line bellow, the event engine will delay 60*60 seconds before 
queuing the event or 60 minutes?

Ok. We can assume an abstract time unit.

But I think that these delays have to be consistent with the other 
parameteres (baud rate, processor MIPS) and this with the size of a 
"Gridlet to be executed in a GridResource (unit: in MI)"... That is, if 
the base time is an abstract time unit, how the time-dependant parameter 
are coherent? I am assuming that all time is based on the SimGrid time 
base (obtained by the clock() method).

Examples:

a) In the AllocationPolicy, inside the checkGridletCompletion method we 
have:

if (gridletInExecList_.size() > 0) {
             super.sendInternalEvent(60.0*60.0);
}

There is a comment about turning the simulation more realistic, if you 
reduce the parameter. But does it affect the actual time span of the 
Gridlet or is it just a granularity problem?

b) In the createGridlet method  (in many examples) there is a int 
runTime parameter that afterwards generates:
int len = runTime * rating;      // calculate a job length for each PE

which is used afterward to greate a Gridlet:
Gridlet gl = new Gridlet(id, len, fileSize, size, vo, user_id,0,id);

==> is "len" a time unit? What time unit?

c) In GridSImCore the constructure can receive a double baudRate 
parameter, whitch is used to invoke the initNetwork method.
I gess the baudRate parameter is always specified using bits per 
seconds... So, shouldn't  all other time-related parameter follow this?


Another question, not time related.

Our broker needs to cancel a Gridlet (actually we cancel it in the 
Resource but our broker maintains a reference to it and resume it 
afterwards sending it again to the Resource ...). We have two ways to do 
this:

we can invoke a method on the AllocationPolicy object attached to the 
Resource or we can send an event asking this.
Ex.: super.scheduler_.gridletCancel(gridletSuspensoID, 
gridletSuspensoUserID);

Question, the difference is only the transporting mechanism, the 
cancellation method is the same, isnt it? And, the cancellation actually 
purges the Gridlet from the Resource? And how about the execution time 
registered in the Gridlet? What happens? There is an inclusion in the 
Gridlet code which deals with this problem (but was coded considering 
the Gridled wouldn't "leave" the Resource... our case is a little bit 
different.

Best regards,
-- Alexandre Sztajnberg

Re: [GridSim-users] Resource discovery

[Jawad A. <ja...@le...>]

Dear,
It uses GridInformationService class to discover resources.
You can modify it according to your requirements.

On 27 Mar 2012, at 19:13, gri...@li... wrote:

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> Message: 1
> Date: Tue, 27 Mar 2012 19:13:42 +0100 (BST)
> From: Khouzami Nesrine <kho...@ya...>
> Subject: [GridSim-users] Question
> To: "Gri...@li..."
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> Good Morning,
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> ?I will use Gridsim for my simulations, and I want to know if Gridsim supports the discovery resources protocol "publish/subsribe".??
> 
> Thank you in advance.
> yours faithfully. 
> 
> Kh.Nesrine? 
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