R process killed when allocating too large matrix (Mac OS X)
Hi Simon, thanks for your quick reply. 1) ... so you can reproduce this? 2) Do you know a way how this can be 'foreseen'? We allocate larger matrices in the copula package depending on the user's input dimension. It would be good to tell her/him "Your dimension is quite large. Be aware of killers in your neighborhood"... before the killer attacks. Thanks & cheers, Marius On Wed, May 4, 2016 at 8:54 PM, Simon Urbanek
<simon.urbanek at r-project.org> wrote:
On May 4, 2016, at 6:14 PM, Marius Hofert <marius.hofert at uwaterloo.ca> wrote:
Can you elaborate on "leads to R being killed"? You should tell to the killer not to do it again :).
Hi Simon! Sure, but who do you tell it if you don't know the killer? This is all the killer left me with, the 'crime scene' if you like :-)
m <- matrix(0, 90000, 100000)
Killed: 9 My colleague Wayne Oldford also tried it on his Mac machine and apparently the killer went further down the hallway to his office now... so scary. Here is Wayne's sessionInfo():
Yes, indeed, scary - since it means someone is killing R which means there is not much R itself can do about it. In fact from the syslog I see May 4 20:48:11 ginaz kernel[0]: low swap: killing pid 56256 (R) so it's the kernel's own defense mechanism. The bad thing is that R cannot do anything about it - the kernel just decides to snipe processes it thinks are dangerous to the health of the system, and it does so without a warning. Cheers, Simon