[ns] Floating Point exception
Hi Guys:
I am trying to run the following code using ns-2.35 in obuntu 10.04 and it says
Floating Point Exception, any one with a better suggestion:
#Open the NAM trace file
set tf1 [open out.tr w]
$ns trace-all $tf1
set nf1 [open out.nam w]
$ns namtrace-all $nf1
# open the Trace file
#Define a 'finish' procedure
proc finish {} {
global ns tf1 nf1
$ns flush-trace
#Close the NAM trace file
close $tf1
# close the trace file
close $nf1
exit 0
}
#Create Two nodes
set n1 [$ns node]
set n2 [$ns node]
#Create link between the nodes
$ns duplex-link $n1 $n2 1.5Mb 10ms DropTail
#Setup a TCP connection
set tcp [new Agent/TCP]
$ns attach-agent $n1 $tcp
set sink [new Agent/TCPSink]
$ns attach-agent $n2 $sink
$ns connect $tcp $sink
$tcp set fid_ 1
$tcp set packetSize_ 500
#Setup a FTP over TCP connectioncd
set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ns at 1.0 $ftp start
$ns at 50.0 $ftp stop
puts Simulation Starts
$ns run
Regards
[ns] Floating Point exception
Hi All,
When i am trying to run below code, i am getting floating point exception,
Can someone please let me know the reason
# Define options
# ==
set val(chan) Channel/WirelessChannel;# channel type
set val(prop) Propagation/TwoRayGround ;# radio-propagation
model
set val(netif) Phy/WirelessPhy/802_15_4 ;# network interface type
set val(mac)Mac/802_15_4 ;# MAC type
set val(ifq)Queue/DropTail/PriQueue;# interface queue type
set val(ll) LL ;# link layer type
set val(ant)Antenna/OmniAntenna;# antenna model
set val(ifqlen) 50 ;# max packet in ifq
set val(nn) 4 ;# number of mobilenodes
set val(rp) AODV ;# routing protocol
set val(x)1000;# X dimension of topography
set val(y)1000;# Y dimension of topography
set val(finish) 500;# time of simulation end
set val(energymodel)EnergyModel;# Energy Model
set val(initialenergy) 100;# value
# ==
# Main Program
# ==
# Initialize Global Variables
set ns [new Simulator]
set tracefd [open tracefile.tr w]
#set log [open output.tr w]
set namtrace [open out.nam w]
$ns use-newtrace
$ns trace-all $tracefd
$ns namtrace-all-wireless $namtrace $val(x) $val(y)
set dist(5m) 7.69113e-06
set dist(9m) 2.37381e-06
set dist(10m) 1.92278e-06
set dist(11m) 1.58908e-06
set dist(12m) 1.33527e-06
set dist(13m) 1.13774e-06
set dist(14m) 9.81011e-07
set dist(15m) 8.54570e-07
set dist(16m) 7.51087e-07
set dist(20m) 4.80696e-07
set dist(25m) 3.07645e-07
set dist(30m) 2.13643e-07
set dist(35m) 1.56962e-07
set dist(40m) 1.20174e-07
Phy/WirelessPhy set CSThresh_ $dist(20m)
Phy/WirelessPhy set RXThresh_ $dist(20m)
# Set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
# Create God
create-god $val(nn)
#Create channel
set channel1_ [new $val(chan)]
# Configure nodes
$ns node-config -adhocRouting $val(rp) \
-llType $val(ll) \
-macType $val(mac) \
-ifqType $val(ifq) \
-ifqLen $val(ifqlen) \
-antType $val(ant) \
-propType $val(prop) \
-phyType $val(netif) \
-channel $channel1_ \
-topoInstance $topo \
-agentTrace ON \
-routerTrace ON \
-macTrace OFF \
-movementTrace OFF \
-energyModel $val(energymodel) \
-initialEnergy $val(initialenergy) \
-rxPower 35.28e-3 \
-txPower 31.32e-3 \
-idlePower 712e-6 \
-sleepPower 144e-9
for {set i 0} {$i $val(nn) } {incr i} {
set node_($i) [$ns node]
}
# Provide initial (X,Y, for now Z=0) co-ordinates for mobilenodes
$node_(0) set X_ 250.0
$node_(0) set Y_ 250.0
$node_(0) set Z_ 0.0
$node_(1) set X_ 260.0
$node_(1) set Y_ 250.0
$node_(1) set Z_ 0.0
$node_(2) set X_ 270.0
$node_(2) set Y_ 250.0
$node_(2) set Z_ 0.0
$node_(3) set X_ 280.0
$node_(3) set Y_ 250.0
$node_(3) set Z_ 0.0
$ns at 5.0 $node_(1) setdest 270.0 250.0 0.83
$ns at 19.0 $node_(1) setdest 280.0 250.0 0.83
# Setup traffic flow between nodes
# UDP connections from node_(1) and node_(0)
set udp_(0) [new Agent/UDP]
$ns attach-agent $node_(1) $udp_(0)
set null_(0) [new Agent/Null]
$ns attach-agent $node_(0) $null_(0)
set cbr_(0) [new Application/Traffic/CBR]
$cbr_(0) set type_ CBR
$cbr_(0) set packetSize_ 32
$cbr_(0) set interval_ 0.2
$cbr_(0) attach-agent $udp_(0)
$ns connect $udp_(0) $null_(0)
$ns at 0.2 $cbr_(0) start
$ns at 487 $cbr_(0) stop
# Setup traffic flow between nodes
# UDP connections from node_(2) and node_(1)
set udp_(1) [new Agent/UDP]
$ns attach-agent $node_(2) $udp_(1)
set null_(1) [new Agent/Null]
$ns attach-agent $node_(1) $null_(1)
set cbr_(1) [new Application/Traffic/CBR]
$cbr_(1) set type_ CBR
$cbr_(1) set packetSize_ 32
$cbr_(1) set interval_ 0.2
$cbr_(1) attach-agent $udp_(1)
$ns connect $udp_(1) $null_(1)
$ns at 18 $cbr_(1) start
#$ns at 487 $cbr_(1) stop
# Define node initial position in nam
for { set i 0 } { $i $val(nn) } { incr i } {
$ns initial_node_pos $node_($i) 5
}
# Telling nodes when the simulation ends
for {set i 0 } {$i $val(nn) } {incr i} {
$ns at $val(finish) $node_($i) reset;
}
# Ending nam and the simulation
$ns at $val(finish) $ns nam-end-wireless $val(finish)
$ns at $val(finish) finish
$ns at 490 puts \ns EXITING...\ ; $ns halt
puts Starting Simulation...
# Define a 'finish' procedure
proc finish {} {
[ns] Floating Point Exception
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[ns] floating point exception
Hello, I got the error message Floating point exception (core dumped) when I run my simulator on the TCL file. Is there any why to determine where is the problem is the TCL code??! Any help would be appreciated -- Motaz K. Saad
Re: [ns] floating point exception
Thanks for reply. Yes, it is divide by zero error (the dumb file is below). I am trying to anticipate what I wrote in the tcl code that lead to divide by zero operation. ion: STATUS_FLOAT_DIVIDE_BY_ZERO at eip=00532A23 eax=00CF5B10 ebx=00CF7998 ecx=00CF5BA8 edx=00CF5B00 esi=0022B310 edi=0022B370 ebp=0022B0C8 esp=0022B0C4 program=C:\cygwin\home\motaz\ns-2\ns-allinone-2.32\ns-2.32\ns.exe, pid 3764, thread main cs=001B ds=0023 es=0023 fs=003B gs= ss=0023 Stack trace: Frame Function Args 0022B0C8 00532A23 (00CF5B00, , 412E8480, ) 0022B0E8 0053030F (00CF5A78, 007A4137, , 0209) 0022B108 004087C4 (00CF5A78, 0002, 0022B31C, 004087C4) 0022B128 0040C5E5 (00CF5A78, 0002, 0022B31C, 0040C5E5) 0022B158 00531A49 (00CF5A78, 0002, 0022B31C, 0022B1D8) 0022B178 0053326F (00CF5A78, 0002, 0022B31C, 0003) 0022B198 005B3086 (00CF5A78, 00A82090, 0005, 0022B310) 0022B348 005B67D2 (00CF2768, 00A82090, 0003, 0022B370) 0022B3D8 005C2537 (00CF2820, 00A82090, 0003, 00A844A4) 0022B428 005C353F (00A82090, 0003, 00A844A4, ) 0022B5F8 005EA2A5 (00A82090, 00D0F7D8, 0022B628, 005D20B7) 0022B628 005E997C (00A82090, 00D0D098, 0005, ) 0022B7F8 005EA37E (00A82090, 00B39C08, 0022B828, 005D8386) 0022B828 005E997C (00A82090, 00A8B528, 00A8AC18, 0001) 0022BB48 005D67E5 (00A965B8, 00A82090, 0005, 0022BB70) 0022BBD8 005D630D (00A965B8, 00A82090, 0005, 0022BC90) End of stack trace (more stack frames may be present) On Tue, May 6, 2008 at 6:27 PM, Bethel Mutanga [EMAIL PROTECTED] wrote: I dont think the error is coming from TRCL but its coming C++ code of your protocol... (if you have implemented your own protocol). I think its a rin time error coming from some calculations that are done during simulation. One example could be division by zero... On 5/6/08, Motaz K. Saad [EMAIL PROTECTED] wrote: Hello, I got the error message Floating point exception (core dumped) when I run my simulator on the TCL file. Is there any why to determine where is the problem is the TCL code??! Any help would be appreciated -- Motaz K. Saad -- Bethel Mutanga Centre for Mobile e-services Cell: +27722657439 Tel: +27359026706 --- My grandfather once told me that there are two kinds of people: those who work and those who take the credit. He told me to try to be in the first group; there was less competition there. -- Motaz K. Saad
[ns] Floating Point Exception when using Shadowing radio propagation model
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[ns] Floating point exception error
Hi friends, I have modified an existing MANET protocol, its compiled successfully but when I am running a tcl script after loading scenario file upto 70 nodes it gives Floating point exception error. I do not able to get the reason for the error. It's not a C++ code error becuase it's not giving a single warning and compiled successfully. Please guide thank you. -- Rupesh Kumar M.Tech(CSE)
Re: [ns] floating point exception error (Elahe Alipour)
I think you should check your code and find the part of calculation which having divide by zero value cause of floating point exception .
[ns] floating point exception error
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[ns] Floating point exception error
hi all ns list, when i run tcl scripts i have this error message Floating point exception! what does it mean what should i do? thanks
Re: [ns] Floating point exception error
This error can be caused by 'division by zero'. Have a look through your code for any possible divisions by zero (consider worst cases). Hope it helps! Vindya - Original Message - From: Bilel Romdhani [EMAIL PROTECTED] To: Ns-users@ISI.EDU Sent: Wednesday, October 18, 2006 2:48 PM Subject: [ns] Floating point exception error hi all ns list, when i run tcl scripts i have this error message Floating point exception! what does it mean what should i do? thanks
[ns] Floating point exception
Hi, I'm writing a new routing protocol for mobile ad hoc networks. This new protocol works properly when I tested on small networks ( 10 nodes). But the simulations stoped when I run on large networks (120 nodes) with the error floating point exception. What can be a cause of this error? Note that I'm using ns-2.28 on RedHat 9. Regards, Takuya - Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great rates starting at 1cent;/min.
Re: [ns] Floating point exception
Takuya, Well it sounds very much like a floating point exception is being thrown somewhere in your code. Try finding where and fixing the code. hint gdb is a pretty good debugger with some fairly good GUI's available for it if you're that way inclined! /hint Matt On Tuesday 27 June 2006 13:35, Takuya Kimura wrote: Hi, I'm writing a new routing protocol for mobile ad hoc networks. This new protocol works properly when I tested on small networks ( 10 nodes). But the simulations stoped when I run on large networks (120 nodes) with the error floating point exception. What can be a cause of this error? Note that I'm using ns-2.28 on RedHat 9. Regards, Takuya - Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great rates starting at 1cent;/min.
Re: [ns] Floating point exception in NS-2
I'm replying to myself, sorry. I forgot to add that I'm running this on
Linux Ubuntu Breezy on a dual Xeon computer.
Does someone know why the function below works fine in a basic C program but
crashes in NS-2?
Thanks in advance,
Arkaitz
On 4/25/06, Arkaitz Bitorika [EMAIL PROTECTED] wrote:
Hello,
I am using a Python numerical library (http://www.numpy.org/) embedded in
NS, and while there's no problem on most of the functionality, I've found
that there's a function that throws a Floating point exception whenever it's
called from NS. This function is pasted below, it has no dependency on
Python, it also throws the Floating point exception when called from a
vanilla NS-2 installation:
double
pinf_init(void)
{
double mul = 1e10;
double tmp = 0.0;
double pinf;
pinf = mul;
for (;;) {
pinf *= mul;
if (pinf == tmp) break;
tmp = pinf;
}
return pinf;
}
This function runs fine when called from an empty main() C++ program, but
if called from NS-2 I get the Floating point exception. Any idea what may be
causing this crash?
Thanks,
Arkaitz
[ns] Floating Point Exception in DiffServ application
Hi all I'm new to this mailing list and NS i've a problem, i'm trying to write a script to simulate a diffserv, but when i tried to run the sctipt i got floating point exception. my script is attached, i couldn't found the reason any help needed thanks best regards The output is as follows: [EMAIL PROTECTED] workspace]# ns ns-5.tcl Policy Table(2): Flow (1 to 5): TSW2CM policer, initial code point 10, CIR 100.0 bps. Flow (0 to 5): TSW2CM policer, initial code point 0, CIR 100.0 bps. Policer Table: TSW2CM policer code point 0 is policed to code point 0. TSW2CM policer code point 10 is policed to code point 11. TSW2CM policer code point 11 is policed to code point 0. Floating point exception [EMAIL PROTECTED] workspace]# The code is attached
Re: [ns] Floating Point Exception in DiffServ application
Hi Due to some changes made between ns v2.27 and v2.28, some DiffServ examples fail with this error. Make sure that you set the mean packet size. It must help. Sincerely, Sayenko Alexander Assistant Telecommunication laboratory, MIT department University of Jyvaskyla, Finland Hi all I'm new to this mailing list and NS i've a problem, i'm trying to write a script to simulate a diffserv, but when i tried to run the sctipt i got floating point exception. my script is attached, i couldn't found the reason any help needed thanks best regards The output is as follows: [EMAIL PROTECTED] workspace]# ns ns-5.tcl Policy Table(2): Flow (1 to 5): TSW2CM policer, initial code point 10, CIR 100.0 bps. Flow (0 to 5): TSW2CM policer, initial code point 0, CIR 100.0 bps. Policer Table: TSW2CM policer code point 0 is policed to code point 0. TSW2CM policer code point 10 is policed to code point 11. TSW2CM policer code point 11 is policed to code point 0. Floating point exception [EMAIL PROTECTED] workspace]# The code is attached
[ns] Floating point exception problem of Blueware 1.0 with ns2.29 on AMD-64bit PC (Suse 10.0)
Hi, Blueware 1.0 were successfully built in a subdirectory of ns-2.29 (ns-allinone-2.29/ns-2.29/blueware). But when I run the Blueware example file in the package, it complains floating point exception. (63.28): + _2_ FIRST MAS LINK ESTABLISHED 2 - 16 DELAY 0.039548 (64.28): + _16_ FIRST SLV LINK ESTABLISHED 16 - 2 DELAY 0.040173 (67.28): + _9_ FIRST MAS LINK ESTABLISHED 9 - 3 DELAY 0.042048 (68.28): + _3_ FIRST SLV LINK ESTABLISHED 3 - 9 DELAY 0.042673 Floating point exception Can anybody help me with this problem? Thanks in advance. Huabei
