У меня проблема при попытке использовать задания SBATCH slurm или задания SRUN с MPI через infiniband.
OpenMPI установлен, и если я запускаю следующую тестовую программу (называемую hello) с mpirun -n 30 ./hello
, она работает.
// compilation: mpicc -o helloMPI helloMPI.c
#include <mpi.h>
#include <stdio.h>
int main ( int argc, char * argv [] )
{
int myrank, nproc;
MPI_Init ( &argc, &argv );
MPI_Comm_size ( MPI_COMM_WORLD, &nproc );
MPI_Comm_rank ( MPI_COMM_WORLD, &myrank );
printf ( "hello from rank %d of %d\n", myrank, nproc );
MPI_Barrier ( MPI_COMM_WORLD );
MPI_Finalize ();
return 0;
}
so :
user@master:~/hello$ mpicc -o hello hello.c
user@master:~/hello$ mpirun -n 30 ./hello
--------------------------------------------------------------------------
[[5627,1],2]: A high-performance Open MPI point-to-point messaging module
was unable to find any relevant network interfaces:
Module: usNIC
Host: master
Another transport will be used instead, although this may result in
lower performance.
--------------------------------------------------------------------------
hello from rank 25 of 30
hello from rank 1 of 30
hello from rank 6 of 30
[...]
hello from rank 17 of 30
Когда я пытаюсь запустить его через SLURM, я получаю такие ошибки сегментации:
user@master:~/hello$ srun -n 20 ./hello
[node05:01937] *** Process received signal ***
[node05:01937] Signal: Segmentation fault (11)
[node05:01937] Signal code: Address not mapped (1)
[node05:01937] Failing at address: 0x30
[node05:01937] [ 0] /lib/x86_64-linux-gnu/libpthread.so.0(+0xfcb0)[0x7fcf6bf7ecb0]
[node05:01937] [ 1] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(+0x244c6)[0x7fcf679b64c6]
[node05:01937] [ 2] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(+0x254cb)[0x7fcf679b74cb]
[node05:01937] [ 3] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(ompi_btl_openib_connect_base_select_for_local_port+0xb1)[0x7fcf679b2141]
[node05:01937] [ 4] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(+0x10ad0)[0x7fcf679a2ad0]
[node05:01937] [ 5] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(mca_btl_base_select+0x114)[0x7fcf6c209b34]
[node05:01937] [ 6] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_bml_r2.so(mca_bml_r2_component_init+0x12)[0x7fcf67bca652]
[node05:01937] [ 7] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(mca_bml_base_init+0x69)[0x7fcf6c209359]
[node05:01937] [ 8] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_pml_ob1.so(+0x5975)[0x7fcf65d1b975]
[node05:01937] [ 9] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(mca_pml_base_select+0x35c)[0x7fcf6c21a0bc]
[node05:01937] [10] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(ompi_mpi_init+0x4ed)[0x7fcf6c1cb89d]
[node05:01937] [11] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(MPI_Init+0x16b)[0x7fcf6c1eb56b]
[node05:01937] [12] /home/user/hello/./hello[0x400826]
[node05:01937] [13] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7fcf6bbd076d]
[node05:01937] [14] /home/user/hello/./hello[0x400749]
[node05:01937] *** End of error message ***
[node05:01938] *** Process received signal ***
[node05:01938] Signal: Segmentation fault (11)
[node05:01938] Signal code: Address not mapped (1)
[node05:01938] Failing at address: 0x30
[node05:01940] *** Process received signal ***
[node05:01940] Signal: Segmentation fault (11)
[node05:01940] Signal code: Address not mapped (1)
[node05:01940] Failing at address: 0x30
[node05:01938] [ 0] /lib/x86_64-linux-gnu/libpthread.so.0(+0xfcb0)[0x7f68b2e10cb0]
[node05:01938] [ 1] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(+0x244c6)[0x7f68ae8484c6]
[node05:01938] [ 2] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(+0x254cb)[0x7f68ae8494cb]
[node05:01940] [ 0] /lib/x86_64-linux-gnu/libpthread.so.0(+0xfcb0)[0x7f8af1d82cb0]
[node05:01940] [ 1] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(+0x244c6)[0x7f8aed7ba4c6]
[node05:01940] [ 2] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(+0x254cb)[0x7f8aed7bb4cb]
[node05:01940] [ 3] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(ompi_btl_openib_connect_base_select_for_local_port+0xb1)[0x7f8aed7b6141]
[node05:01940] [ 4] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(+0x10ad0)[0x7f8aed7a6ad0]
[node05:01938] [ 3] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(ompi_btl_openib_connect_base_select_for_local_port+0xb1)[0x7f68ae844141]
[node05:01938] [ 4] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_btl_openib.so(+0x10ad0)[0x7f68ae834ad0]
[node05:01938] [ 5] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(mca_btl_base_select+0x114)[0x7f68b309bb34]
[node05:01938] [ 6] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_bml_r2.so(mca_bml_r2_component_init+0x12)[0x7f68aea5c652]
[node05:01940] [ 5] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(mca_btl_base_select+0x114)[0x7f8af200db34]
[node05:01940] [ 6] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_bml_r2.so(mca_bml_r2_component_init+0x12)[0x7f8aed9ce652]
[node05:01938] [ 7] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(mca_bml_base_init+0x69)[0x7f68b309b359]
[node05:01938] [ 8] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_pml_ob1.so(+0x5975)[0x7f68acbad975]
[node05:01940] [ 7] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(mca_bml_base_init+0x69)[0x7f8af200d359]
[node05:01940] [ 8] /opt/cluster/spool/openMPI/1.8/gcc/lib/openmpi/mca_pml_ob1.so(+0x5975)[0x7f8aebb1f975]
[node05:01940] [ 9] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(mca_pml_base_select+0x35c)[0x7f8af201e0bc]
[node05:01938] [ 9] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(mca_pml_base_select+0x35c)[0x7f68b30ac0bc]
[node05:01938] [10] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(ompi_mpi_init+0x4ed)[0x7f68b305d89d]
[node05:01940] [10] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(ompi_mpi_init+0x4ed)[0x7f8af1fcf89d]
[node05:01938] [11] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(MPI_Init+0x16b)[0x7f68b307d56b]
[node05:01938] [12] /home/user/hello/./hello[0x400826]
[node05:01940] [11] /opt/cluster/spool/openMPI/1.8/gcc/lib/libmpi.so.1(MPI_Init+0x16b)[0x7f8af1fef56b]
[node05:01940] [12] /home/user/hello/./hello[0x400826]
[node05:01938] [13] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7f68b2a6276d]
[node05:01938] [14] /home/user/hello/./hello[0x400749]
[node05:01938] *** End of error message ***
[node05:01940] [13] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7f8af19d476d]
[node05:01940] [14] /home/user/hello/./hello[0x400749]
[node05:01940] *** End of error message ***
[node05:01939] *** Process received signal ***
[node05:01939] Signal: Segmentation fault (11)
[node05:01939] Signal code: Address not mapped (1)
[node05:01939] Failing at address: 0x30
[...]etc
Кто-нибудь знает, в чем проблема? Я построил openMPI с поддержкой Slurm и установил ту же версию компиляторов и библиотек, фактически все библиотеки находятся в общей папке NFS, которая монтируется на каждом узле.
примечания:
Он должен использовать infiniband, как он установлен. Но когда я запускаю openmpi с помощью mpirun, я замечаю
[[5627,1],2]: A high-performance Open MPI point-to-point messaging module
was unable to find any relevant network interfaces:
Module: usNIC
Host: cluster
что, я полагаю, означает "не прохождение бесконечной полосы". Я установил драйверы Infiniband и настроил IP через Infiniband. Slurm настроен для работы с IP-адресами Infiniband: правильная ли это конфигурация?
Заранее спасибо С уважением
РЕДАКТИРОВАТЬ :
Я только что попытался скомпилировать его с помощью MPICH2 вместо openMPI, и он работает с SLURM. Значит, проблема, вероятно, связана с openMPI, а не с конфигурацией Slurm?
РЕДАКТИРОВАТЬ 2: На самом деле, я видел, что при использовании openMPI 1.6.5 (вместо 1.8) с командой SBATCH вместо SRUN мой сценарий выполняется (т.е. он возвращает номер потока, ранг и хост. Но он показывает предупреждения, связанные с поставщиком openfabric и выделение зарегистрированной памяти:
The OpenFabrics (openib) BTL failed to initialize while trying to
allocate some locked memory. This typically can indicate that the
memlock limits are set too low. For most HPC installations, the
memlock limits should be set to "unlimited". The failure occured
here:
Local host: node05
OMPI source: btl_openib_component.c:1216
Function: ompi_free_list_init_ex_new()
Device: mlx4_0
Memlock limit: 65536
You may need to consult with your system administrator to get this
problem fixed. This FAQ entry on the Open MPI web site may also be
helpful:
http://www.open-mpi.org/faq/?category=openfabrics#ib-locked-pages
--------------------------------------------------------------------------
--------------------------------------------------------------------------
WARNING: There was an error initializing an OpenFabrics device.
Local host: node05
Local device: mlx4_0
--------------------------------------------------------------------------
Hello world from process 025 out of 048, processor name node06
Hello world from process 030 out of 048, processor name node06
Hello world from process 032 out of 048, processor name node06
Hello world from process 046 out of 048, processor name node07
Hello world from process 031 out of 048, processor name node06
Hello world from process 041 out of 048, processor name node07
Hello world from process 034 out of 048, processor name node06
Hello world from process 044 out of 048, processor name node07
Hello world from process 033 out of 048, processor name node06
Hello world from process 045 out of 048, processor name node07
Hello world from process 026 out of 048, processor name node06
Hello world from process 043 out of 048, processor name node07
Hello world from process 024 out of 048, processor name node06
Hello world from process 038 out of 048, processor name node07
Hello world from process 014 out of 048, processor name node05
Hello world from process 027 out of 048, processor name node06
Hello world from process 036 out of 048, processor name node07
Hello world from process 019 out of 048, processor name node05
Hello world from process 028 out of 048, processor name node06
Hello world from process 040 out of 048, processor name node07
Hello world from process 023 out of 048, processor name node05
Hello world from process 042 out of 048, processor name node07
Hello world from process 018 out of 048, processor name node05
Hello world from process 039 out of 048, processor name node07
Hello world from process 021 out of 048, processor name node05
Hello world from process 047 out of 048, processor name node07
Hello world from process 037 out of 048, processor name node07
Hello world from process 015 out of 048, processor name node05
Hello world from process 035 out of 048, processor name node06
Hello world from process 020 out of 048, processor name node05
Hello world from process 029 out of 048, processor name node06
Hello world from process 016 out of 048, processor name node05
Hello world from process 017 out of 048, processor name node05
Hello world from process 022 out of 048, processor name node05
Hello world from process 012 out of 048, processor name node05
Hello world from process 013 out of 048, processor name node05
Hello world from process 000 out of 048, processor name node04
Hello world from process 001 out of 048, processor name node04
Hello world from process 002 out of 048, processor name node04
Hello world from process 003 out of 048, processor name node04
Hello world from process 006 out of 048, processor name node04
Hello world from process 009 out of 048, processor name node04
Hello world from process 011 out of 048, processor name node04
Hello world from process 004 out of 048, processor name node04
Hello world from process 007 out of 048, processor name node04
Hello world from process 008 out of 048, processor name node04
Hello world from process 010 out of 048, processor name node04
Hello world from process 005 out of 048, processor name node04
[node04:04390] 47 more processes have sent help message help-mpi-btl-openib.txt / init-fail-no-mem
[node04:04390] Set MCA parameter "orte_base_help_aggregate" to 0 to see all help / error messages
[node04:04390] 47 more processes have sent help message help-mpi-btl-openib.txt / error in device init
Из этого я понимаю, что а) v.1.6.5 лучше обрабатывает ошибки и б) мне нужно настроить драйверы openMPI и / или infiniband с большим размером зарегистрированной памяти. Я вижу эту страницу и, видимо, только нужно изменить материал openMPI? Я должен это проверить ...