ns3::SeedManager Class Reference

List of all members.

Static Public Member Functions
static void	SetSeed (uint32_t seed)
	set the seed it will duplicate the seed value 6 times
static uint32_t	GetSeed ()
	Get the seed value.
static void	SetRun (uint32_t run)
	Set the run number of simulation.
static uint32_t	GetRun (void)
static bool	CheckSeed (uint32_t seed)
	Check if seed value is valid if wanted to be used as seed.

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Member Function Documentation

static bool ns3::SeedManager::CheckSeed

(

uint32_t

seed

)

[static]

Check if seed value is valid if wanted to be used as seed.

Returns:

true if valid and false if invalid

static uint32_t ns3::SeedManager::GetRun

(

void

)

[static]

Returns:

the current run number

See also:

SetRun

static uint32_t ns3::SeedManager::GetSeed

(

)

[static]

Get the seed value.

Returns:

the seed value

Note: returns the first of the six seed values used in the underlying RNG

static void ns3::SeedManager::SetRun

(

uint32_t

run

)

[static]

Set the run number of simulation.

 SeedManager::SetSeed(12);
 int N = atol(argv[1]); //read in run number from command line
 SeedManager::SetRun(N);
 UniformVariable x(0,10);
 ExponentialVariable y(2902);

In this example, N could successivly be equal to 1,2,3, etc. and the user would continue to get independent runs out of the single simulation. For this simple example, the following might work:

 ./simulation 0
 ...Results for run 0:...

 ./simulation 1
 ...Results for run 1:...

static void ns3::SeedManager::SetSeed

(

uint32_t

seed

)

[static]

set the seed it will duplicate the seed value 6 times

 SeedManger::SetSeed(15);
 UniformVariable x(2,3);     //these will give the same output everytime
 ExponentialVariable y(120); //as long as the seed stays the same

Parameters:

seed

Note, while the underlying RNG takes six integer values as a seed; it is sufficient to set these all to the same integer, so we provide a simpler interface here that just takes one integer.

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The documentation for this class was generated from the following file:

• src/core/random-variable.h