我们有一个大矩阵无法放入 bigmemory，因为它超过了 max_vector_size，有没有办法解决这个问题？
a = matrix(rnorm(200e6 * 15), 200e6)
b = as.big.matrix(a, backingfile="")
Error in SetMatrixElements(x@address, as.double(j), as.double(i), as.double(value)) :
long vectors not supported yet: ../include/Rinlinedfuns.h:138
Error during wrapup: long vectors not supported yet: ../include/Rinlinedfuns.h:138
谢谢你。JC