Question

当我尝试运行一个应用程序时（只是一个简单的hello_world.c不起作用）我每次都会收到此错误：

mpiexec -ckpointlib blcr -ckpoint-prefix /tmp/ -ckpoint-interval 10 -machinefile /tmp/machinefile -n 1 ./app_name

[proxy:0:0@masterpi] requesting checkpoint
[proxy:0:0@masterpi] checkpoint completed
[proxy:0:0@masterpi] requesting checkpoint
[proxy:0:0@masterpi] HYDT_ckpoint_checkpoint (./tools/ckpoint/ckpoint.c:111): Previous checkpoint has not completed.[proxy:0:0@masterpi] HYD_pmcd_pmip_control_cmd_cb (./pm/pmiserv/pmip_cb.c:905): checkpoint suspend failed
[proxy:0:0@masterpi] HYDT_dmxu_poll_wait_for_event (./tools/demux/demux_poll.c:77): callback returned error status
[proxy:0:0@masterpi] main (./pm/pmiserv/pmip.c:206): demux engine error waiting for event
[mpiexec@masterpi] control_cb (./pm/pmiserv/pmiserv_cb.c:202): assert (!closed) failed
[mpiexec@masterpi] HYDT_dmxu_poll_wait_for_event (./tools/demux/demux_poll.c:77): callback returned error status
[mpiexec@masterpi] HYD_pmci_wait_for_completion (./pm/pmiserv/pmiserv_pmci.c:197): error waiting for event
[mpiexec@masterpi] main (./ui/mpich/mpiexec.c:331): process manager error waiting for completion

我只想制作一个检查点，而不是其他任何东西（稍后重启）。

提前致谢

UPDATE：

我尝试过MPICH2，没有机会。或者也许我错了...

pi@raspberrypi ~ $ mpiexec -n 1 -ckpointlib blcr -ckpoint-prefix /tmp/  -ckpoint-interval 2 ./test3
Count to: 0
[proxy:0:0@raspberrypi] requesting checkpoint
[proxy:0:0@raspberrypi] checkpoint completed
Count to: 1
[proxy:0:0@raspberrypi] requesting checkpoint
[proxy:0:0@raspberrypi] HYDT_ckpoint_checkpoint (/tmp/mpich/mpich2-1.5/src/pm/hydra/tools/ckpoint/ckpoint.c:111): Previous checkpoint has not completed.[proxy:0:0@raspberrypi] HYD_pmcd_pmip_control_cmd_cb (/tmp/mpich/mpich2-1.5/src/pm/hydra/pm/pmiserv/pmip_cb.c:902): checkpoint suspend failed
[proxy:0:0@raspberrypi] HYDT_dmxu_poll_wait_for_event (/tmp/mpich/mpich2-1.5/src/pm/hydra/tools/demux/demux_poll.c:77): callback returned error status
[proxy:0:0@raspberrypi] main (/tmp/mpich/mpich2-1.5/src/pm/hydra/pm/pmiserv/pmip.c:210): demux engine error waiting for event
[mpiexec@raspberrypi] control_cb (/tmp/mpich/mpich2-1.5/src/pm/hydra/pm/pmiserv/pmiserv_cb.c:201): assert (!closed) failed
[mpiexec@raspberrypi] HYDT_dmxu_poll_wait_for_event (/tmp/mpich/mpich2-1.5/src/pm/hydra/tools/demux/demux_poll.c:77): callback returned error status
[mpiexec@raspberrypi] HYD_pmci_wait_for_completion (/tmp/mpich/mpich2-1.5/src/pm/hydra/pm/pmiserv/pmiserv_pmci.c:196): error waiting for event
[mpiexec@raspberrypi] main (/tmp/mpich/mpich2-1.5/src/pm/hydra/ui/mpich/mpiexec.c:325): process manager error waiting for completion

Test3的码：

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <mpi.h>

int main(int argc, char* argv[]) {

    int rank;
    int size;
    int i = 0;

    MPI_Init(&argc, &argv);
    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    MPI_Comm_size(MPI_COMM_WORLD, &size);

    MPI_Status status;

    if (rank == 0) {
        for(i; i <=100; i++){
            int j = 0;
            while(j < 100000000){
                j++;
            }
            printf("Count to: %i\n", i);
        }
    } else {
    }

    MPI_Finalize();
    return 0;

}

我只需要一个成功的检查点并显示重启。如果有人有一个有效的例子（无关紧要，简单的工作“Hello World”会让我开心！）我会很高兴。

新年快乐！

Answer 1

不幸的是，MPICH 3.0.4中的检查点/重启代码目前已知有问题。希望在将来的版本中得到修复。看起来你可能正确使用它。如果你回到以前的版本，你可能会有更好的运气。

Answer 2

这里的问题是检查点的间隔太小。将其设置为20秒或更长时间解决了这个问题（但不是其他:(）问题。

mpiexec检查点错误（RPi）

UPDATE：

2 个答案: