[R] multicore + xeon ?

[kv]

Is there any reason to expect a problem ?
i'm running this script on the cluster down the hall:

module load R/2.11.0
R
library(multicore) 
fxx<-function(ll) runif(1)
mclapply(1:10,fxx)

i get:

Error in fork() : Unable to fork.

less /proc/cpuinfo

yields:

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Xeon(R) CPU           X5365  @ 3.00GHz
stepping        : 11
cpu MHz         : 2992.502
cache size      : 4096 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 4
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm
constant_tsc pni monito
r ds_cpl vmx est tm2 cx16 xtpr dca lahf_lm
bogomips        : 5990.06
clflush size    : 64
cache_alignment : 64
address sizes   : 38 bits physical, 48 bits virtual

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