I also wanted to add the result from my Windows machine (R 3.0.0) to the
answer below:
> ncore = system('nproc')
> ncore
[1] 127
# My machine was not happy about starting a cluster with 127 nodes though.
Best wishes,
Jon
On 18-Apr-13 15:13, Jon Olav Skoien wrote:
I dont think this has anything to do with the snow package, you should
rather start by checking what is the output of system('nproc') is on
your computer, and also whether it is possible to assign this to a
variable. I tried on a redhat linux (R 2.15.0) server:
> ncore = system('nproc')
16
> ncore
[1] 0
# the result is printed, not returned
Best wishes,
Jon
On 18-Apr-13 10:52, Kaiyin Zhong (Victor Chung) wrote:
Dear all,
I found a strange thing with the snow package.
This will work:
y = matrix(1:4, 2)
cl = makeCluster(rep('localhost', 8), type='SOCK')
parMM(cl, y, y)
This will not:
y = matrix(1:4, 2)
ncore = system('nproc')
parMM(cl, y, y)
Error in cut.default(i, breaks) : invalid number of intervals
I also tried:
cl = makeCluster(rep('localhost', ncore), type='SOCK')
cl = makeCluster(rep('localhost', as.integer(ncore)), type='SOCK')
no luck.
Could anyone please help? Thanks!
Best regards,
Kaiyin ZHONG
------------------------------
FMB, Erasmus MC
k.zh...@erasmusmc.nl
kindlych...@gmail.com
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Joint Research Centre - European Commission
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