Hi,
There is a variable TOS_MAX_NODES that is defined in tos.h in the
tinyos-2.x/tos/lib/tossim directory, on line 67:
#define TOSSIM_MAX_NODES 1000
By default it is 1000, which is why the segmentation fault is
happening when you are running with 5000 nodes. You can change this
number and recompile, but I am not sure if there is a more
fundamental maximum. I was able to get TOSSIM running, apparently
correctly, with as many is 1049 nodes.
Thanks,
Tal
> Hi,
>
> I am wondering the largest number of motes TOSSIM can simulate.
>
> I am using XubunTOS. I write a Driver.c simulation program. It works
> fine with 4 nodes.
>
> When I use 5000 nodes, I have the following code segment in Driver.c
>
> ====
> #define Num_of_Nodes 5000
> ...
> for (i = 1; i <= Num_of_Nodes; i ++)
> {
> t->getNode(i)->addNoiseTraceReading((int)temp_noise);
> }
>
> =====
>
> when I use gdb to debug, the above code gives the following error:
>
> ====
> Program received signal SIGSEGV, Segmentation fault.
> 0x0804e752 in sim_noise_trace_add (node_id=65535, noiseVal=-98 '\236')
> at /opt/tinyos-2.x/tos/lib/tossim/sim_noise.c:93
> 93
> noiseData[node_id].noiseTrace[noiseData[node_id].noiseTraceIndex] =
> noiseVal;
> ===
>
> Can anyone give me some advice?
>
> Thanks,
>
> Chris
>
>
>
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