Re: [igraph] How to resolve this problem: At vector.pmt:409 : cannot reserve space for vector, Out of memory

[Tamas Nepusz]

Hi,

This has recently been discussed on the mailing list; to put it simply, the 
shortest path matrix of a graph with 138973 vertices woud have approximately 19 
billion elements; with each element taking up 8 bytes, this would require about 
143 GB of memory. You can try calculating the elements of the shortest path 
matrix row by row. See this message for more details:

http://lists.nongnu.org/archive/html/igraph-help/2010-06/msg00018.html

-- 
Tamas

On 2010.06.18., at 10:13, shahab mokarizadeh wrote:

> Hi,
> I am using R-IGraph and I  load a directed graph with 138973 vertices
> and  733813 edges. I could load the graph with no problem.
> Then I invoked " shortes.path(mygraph) " where I get the following exception:
> Error in shortest.paths(myraph) :
>    At vector.pmt:409 : cannot reserve space for vector, Out of memory
> 
> I am using Widnows x64 with 3G RAM. I tried both Rterm.exe and
> Rgui.exe with following options, but it didn't make any change:
>  --min-vsize=2G --min-nzise=19173961 (1G)  or
>  --min-visize=3G
> 
> Is there anything that I am missing in memory setting or simply the
> graph is so large?
> 
> Thanks,
> /Shahab Mokarizadeh
> PhD Student
> ICT School, KTH, Sweden
> 
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