rami batal skrev:
> Dear all,
>
> I am trying to apply kmeans clusterring on a data file (size is about 300
> Mb)
>
> I read this file using
>
> x=read.table('file path' , sep=" ")
>
> then i do kmeans(x,25)
>
> but the process stops after two minutes with an error :
>
> Error: cannot allocate vector of size 907.3 Mb
>
> when i read the archive i notice that the best solution is to use a 64bit
> OS.
>
> "Error messages beginning cannot allocate vector of size indicate a failure
> to obtain memory, either because the size exceeded the address-space limit
> for a process or, more likely, because the system was unable to provide the
> memory. Note that on a 32-bit OS there may well be enough free memory
> available, but not a large enough contiguous block of address space into
> which to map it. "
>
> the problem that I have two machines with two OS (32bit and 64bit) and when
> i used the 64bit OS the same error remains.
>
> Thank you if you have any suggestions to me and excuse me because i am a
> newbie.
>
> Here the default information for the 64bit os:
>
>
>> sessionInfo()
>>
> R version 2.7.1 (2008-06-23)
> x86_64-redhat-linux-gnu
>
>
>> gc()
>>
> used (Mb) gc trigger (Mb) max used (Mb)
> Ncells 137955 7.4 350000 18.7 350000 18.7
> Vcells 141455 1.1 786432 6.0 601347 4.6
>
> I tried also to start R using the options to control the available memory
> and the result still the same. or maybe i don't assign the correct values.
>
>
It might be a good idea first to work out what the actual memory
requirements are. 64 bits does not help if you are running out of RAM
(+swap).
--
O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907
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