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POR not using more than 4GB of memory
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  1. POR not using more than 4GB of memory
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    copied!<p>I'm running 64 bit R on Ubuntu 12.10 AMD64. I recently added additional 8GB of memory to my system making it a total of 12GB. But I notice that R gives me an error whenever the memory usage (of a single R session) goes above 4GB. When I ran 6 R sessions in parallel, each consuming ~ 3 GB of memory, my over all memory usage increased up to 11 GB. But a single R session is not able to use more than 4GB! I need to train a random forest model over a large data set and I need > 4GB with a single R session. </p> <p>Update:</p> <pre><code>R&gt; sessionInfo() R version 2.15.1 (2012-06-22) Platform: x86_64-pc-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods [7] base loaded via a namespace (and not attached): [1] tools_2.15.1 </code></pre> <p>Update 2:</p> <pre><code>$ ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 92787 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 92787 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited </code></pre>
 

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