Error with bigmemory package

system.time(simuFunctionSeq(0.03, 0.015, 1, 5, 1000, 100,"/Users/simon/Documents/R/BigMTest"))
   system.time(simuFunctionPar(0.03, 0.015, 1, 5, 1000, 100,"/Users/simon/Documents/R/BigMTest"))
[1] "Sequential Processing with N =  1000  and K =  100"
   user  system elapsed
  5.157   0.086   5.587
[1] "Parallel Processing with N =  1000  and K =  100"
   user  system elapsed
  6.069   0.220   3.895

:> system.time(simuFunctionSeq(0.03, 0.015, 1, 5, 10000, 100,"/Users/simon/Documents/R/BigMTest"))
   system.time(simuFunctionPar(0.03, 0.015, 1, 5, 10000, 100,"/Users/simon/Documents/R/BigMTest"))
[1] "Sequential Processing with N =  10000  and K =  100"
   user  system elapsed
  8.129   0.689  12.747
[1] "Parallel Processing with N =  10000  and K =  100"
   user  system elapsed
  8.387   0.772  12.005

:> system.time(simuFunctionSeq(0.03, 0.015, 1, 5, 10000, 1000,"/Users/simon/Documents/R/BigMTest"))
   system.time(simuFunctionPar(0.03, 0.015, 1, 5, 10000, 1000,"/Users/simon/Documents/R/BigMTest"))
[1] "Sequential Processing with N =  10000  and K =  1000"
   user  system elapsed
 71.295   6.330 109.656
[1] "Parallel Processing with N =  10000  and K =  1000"
   user  system elapsed
 50.943   6.347  89.115

:> system.time(simuFunctionSeq(0.03, 0.015, 1, 5, 100000, 1000,"/Users/simon/Documents/R/BigMTest"))
   system.time(simuFunctionPar(0.03, 0.015, 1, 5, 100000, 1000,"/Users/simon/Documents/R/BigMTest"))
[1] "Sequential Processing with N =  1e+05  and K =  1000"
R(578,0xad2032c0) malloc: *** mmap(size=800002048) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
R(578,0xad2032c0) malloc: *** mmap(size=800002048) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
Error in  as.big.matrix(apply(apply(trade, 2, diff), 2, rev), backingpath = backingpath,  :
  error in evaluating the argument 'x' in selecting a method for function 'as.big.matrix': Error in apply(apply(trade, 2, diff), 2, rev) :
  error in evaluating the argument 'X' in selecting a method for function 'apply': Error: cannot allocate vector of size 762.9 Mb

Timing stopped at: 16.944 15.807 296.723