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Pasquale Morvillo
pasquale.morvillo@portici.enea.it

>Was this information obtained on the head node or on a regular node?

This information was obtained on one of the node (16 cpus) I can use (i.e. a node where a firefly job can run). I checked other nodes and I got the some results.

regards

>regards,
>Alex

>On Mon Jul 6 '09 6:43pm, Pasquale Morvillo wrote
>------------------------------------------------
>>Hi,

>>>what is the output of "ulimit -a" command on the nodes you are using?

>>core file size          (blocks, -c) unlimited
>>data seg size           (kbytes, -d) unlimited
>>scheduling priority             (-e) 0
>>file size               (blocks, -f) unlimited
>>pending signals                 (-i) 270336
>>max locked memory       (kbytes, -l) unlimited
>>max memory size         (kbytes, -m) unlimited
>>open files                      (-n) 4096
>>pipe size            (512 bytes, -p) 8
>>POSIX message queues     (bytes, -q) 819200
>>real-time priority              (-r) 0
>>stack size              (kbytes, -s) unlimited
>>cpu time               (seconds, -t) unlimited
>>max user processes              (-u) 270336
>>virtual memory          (kbytes, -v) unlimited
>>file locks                      (-x) unlimited

>>>Working in standard mode, P2P uses two sockets per each peer,
>>>while in XDLB mode, there are four sockets per each peer.

>>>Thus, if you run Firefly in parallel on 256 nodes, each Firefly's instance will need either 512 or 1024 open sockets (file descriptors).

>>>The typical default limit on most Linux installation is 1024 open file descriptors per user.
>>>You may need to check the system-wide limit as well.
>>

>>