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有沒有人有成功將大型陣列導出到R中的雪羣? bigmatrix和attach.resource示例中的註釋行表示可以這樣做,但我沒有取得成功。當將大型陣列導出爲雪羣時,R會崩潰
library(bigmemory)
library(snow)
z <- big.matrix(3, 3, type='integer', init=3)
cl = makeCluster(8, type = "SOCK")
clusterEvalQ(cl,{library(bigmemory)})
zdescription <- describe(z)
clusterExport(cl,"zdescription")
clusterEvalQ(cl,{y <- attach.resource(zdescription)}) #attach.big.matrix also crashes
它還崩潰,即使我用支持大矩陣(這是奇怪的,因爲這並不甚至使用共享內存)的文件
[[1]]
Warning: This is not advised. Here is the head of the matrix:
*** caught segfault ***
address 0x10, cause 'memory not mapped'
Traceback:
1: .Call("CGetNrow", [email protected])
2: nrow(x)
3: nrow(x)
4: .local(x, ...)
5: head(x)
6: head(x)
Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace