mpiexec 拋出錯誤“mkstemp 失敗，沒有這樣的文件或目錄” (mpiexec throws error "mkstemp failed No such file or directory")

問題描述

mpiexec 拋出錯誤“mkstemp 失敗，沒有這樣的文件或目錄” (mpiexec throws error "mkstemp failed No such file or directory")

我已經為 Android 交叉編譯了 MPICH 並對其進行了配置。當我按如下方式生成單個進程時，它工作正常

$./mpiexec ‑n 1  ‑launcher=fork  ./mpi_hello_world                             
Hello world from processor zero, rank 0 out of 1 processors

但是，如果參數“n”大於1，Android系統會響應以下錯誤：

$./mpiexec ‑n 2  ‑launcher=fork  ./mpi_hello_world                                         
Fatal error in MPI_Init: Other MPI error, error stack:
MPIR_Init_thread(474).................: 
MPID_Init(190)........................: channel initialization failed
MPIDI_CH3_Init(89)....................: 
MPID_nem_init(272)....................: 
MPIDI_CH3I_Seg_commit(327)............: 
MPIU_SHMW_Seg_create_and_attach(897)..: 
MPIU_SHMW_Seg_create_attach_templ(610): mkstemp failed No such file or directory

可能是與在 android 上創建的臨時文件的名稱有關嗎？請幫忙。

參考解法

方法 1:

The problem is that on Android file system you do not have /tmp and /dev/shm directories, which are crutial for creating temp files for shared‑memory communication. Because of that, mkstemp() will fail. mkdir them while you are su, set up the permissions and ch3:nemesis will work.

(by Hemant Tiwari、cassini)

參考文件

1. mpiexec throws error "mkstemp failed No such file or directory" (CC BY‑SA 2.5/3.0/4.0)