我有一个简单的mpi程序来演示我的问题:
#include <stdio.h>
#include <mpi.h>
int main(int argc, char *argv[])
{
int rank, csize;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &csize);
printf("Hello from rank[%d/%d]\n", rank, csize);
MPI_Finalize();
}
编译后,我可以使用
mpirun
从sbcl repl:
* (uiop:run-program '("mpirun" "-np" "10" "./hello_world") :output :string)
"Hello from rank[7/10]
Hello from rank[9/10]
Hello from rank[5/10]
Hello from rank[8/10]
Hello from rank[0/10]
Hello from rank[1/10]
Hello from rank[2/10]
Hello from rank[3/10]
Hello from rank[4/10]
Hello from rank[6/10]
"
NIL
0
然而,当我在slime中运行相同的时,slime repl只是挂起。如果我直接运行可执行文件,而不是通过
mpirun
启动器,然后一切正常:
CL-USER> (uiop:run-program '("./hello_world")
:output :string)
"Hello from rank[0/1]
"
NIL
0
我正在linux工作站上使用sbcl-1.4.5和slime 2.20。有没有人有这个问题的解决方案,或者从哪里开始寻找?
更新时间:
问题源于emacs
comint
模式,slime基于该模式。如果我启动
sbcl
通过
make-comint-in-buffer
然后使用
uiop:run-program
。
更新2:
读了一点之后
comint公司
模式下,我能够捕获挂起过程中的一些输出。此emacs lisp代码:
(make-comint "foo" "mpirun" nil "-np" "1" "/home/ptb/programming/c/hello_world")
在挂起的进程上产生以下错误:
[warn] Epoll MOD(1) on fd 14 failed. Old events were 6; read change was 0 (none); write change was 2 (del): Bad file descriptor
[warn] Epoll MOD(4) on fd 14 failed. Old events were 6; read change was 2 (del); write change was 0 (none): Bad file descriptor
对这意味着什么有什么想法吗?
