[Beowulf] shared memory error

[John Hearns]

Jorg,
If it is any help,  on a Haswell compute node running CentOS 7 and kernel 3.10.0-229.el7.x86_64, see below
What does ipcs -l  return on your systems please?



~# sysctl -a | grep kernel.shm
kernel.shm_rmid_forced = 0
kernel.shmall = 4294967296
kernel.shmmax = 4294967296
kernel.shmmni = 20960

also

kernel.sem = 250 32000 100 128



~# ipcs -l

------ Messages Limits --------
max queues system wide = 1024
max size of message (bytes) = 8192
default max size of queue (bytes) = 16384

------ Shared Memory Limits --------
max number of segments = 20960
max seg size (kbytes) = 4194304
max total shared memory (kbytes) = 17179869184
min seg size (bytes) = 1

------ Semaphore Limits --------
max number of arrays = 128
max semaphores per array = 250
max semaphores system wide = 32000
max ops per semop call = 100
semaphore max value = 32767


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