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--- paracluster [2016/06/29 09:58] – [Use] deul
+++ paracluster [2022/04/04 06:49] (current) – jansen
@@ Line 1: / Line 1: @@
-======Para Cluster====
+======OBSOLETE: Para Cluster====
   * [[paracluster:torque| Torque implementation at Leiden Observatory]]
   * [[paracluster:users| Current user groups]]
@@ Line 9: / Line 9: @@
 =====Latest News=====
-The current cluster consists out of para10-para13 and para33-para37. To log into the new cluster, go to **paracluster** or **para** (which will bring you to the head node of the cluster, currently para33, but users should not count on that number to be the same forever).
+The para cluster is getting quite old, both in terms of hardware and in terms of software. It has been retired in spring 2022.
-Currently para10-para13 + para34 are LOFAR specific nodes, while para33, para35-para37 are general purpose nodes.
-These nodes are only accessible from the head node using the system-supplied TORQUE + MPI implementation. DO NOT use your own mpi version, don't even have it included in your PATH or LD_LIBRARY_PATH, unless you want strange and unpredictible results!
-You can however use the [[linux:sfinx_modules|environment modules]] to swich between MPICH and OpenMPI.
 ====Introduction====
@@ Line 39: / Line 35: @@
 The cluster used to be free for use. But the time has come (according to your representatives on the computer committee) to implement a queuing system. Our implementation uses the Torque (OpenPBS) queuing system. Most of the para machines are no longer directly accessible. In stead, you log in to paracluster and submit your job to one of the queues from there. More details on [[paracluster:torque|the torque pages]].
-To see the current use of the cluster have a look at [[http://paradox.strw.leidenuniv.nl/|the ganglia WEB page]].
+To see the current use of the cluster, have a look at [[http://ganglia.strw.leidenuniv.nl/|the ganglia WEB page]] (select PARA as the source; the overview also show other groups and clusters of the institute). Note that this site is only accessible from within our networks.
+<del>Our installation of torque is linked to a single installation of MPICH, and is not supposed to cooperate with other MPI installations (or even your own MPICH compilation). if you run into problems, check your PATH and LD_LIBRARY_PATH and remove any references to your own MPI implementations you may use on other computers. (Actually, you may use this opportunity to reconsider whether maintaining your own copy of MPI is worth it, on any of the systems)</del>
-Our installation of torque is linked to a single installation of MPICH, and is not supposed to cooperate with other MPI installations (or even your own MPICH compilation). if you run into problems, check your PATH and LD_LIBRARY_PATH and remove any references to your own MPI implementations you may use on other computers. (Actually, you may use this opportunity to reconsider whether maintaining your own copy of MPI is worth it, on any of the systems)
+To obtain access to the para cluster you have to agree to the [[paracluster:access|rules of usage]] for the para cluster. Once you do, you can request access to the para cluster by sending the helpdesk a request to add your account to the ''%%paragp%%'' group. When this is done you can login to the headnode ''%%para33%%''.
-To obtain access to the para cluster you have to agree to the rules of usage for the para cluster. Once you do, you can request access to the para cluster by sending the helpdesk a request to add your account to the ''%%paragp%%'' group. When this is done you can login to the headnode ''%%para33%%''.
 ====Interactive use====

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