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paracluster [2021/02/03 12:26] – [Use] jansenparacluster [2021/02/03 12:29] – [Latest News] jansen
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 =====Latest News===== =====Latest News=====
  
-The current cluster consists out of para10-para13 and para33-para37To 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 softwareAn upgrade or reconfiguration may be coming at some point.
  
-Currently para10-para13 + para34 are LOFAR specific nodes, while para33para35-para37 are general purpose nodes+The current cluster consists out of para33 and para35-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).
  
-These nodes are only accessible from the head node using the system-supplied TORQUE + MPI implementationDO 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!+These nodes are only accessible from the head node using the system-supplied TORQUE queing system
 You can however use the [[linux:sfinx_modules|environment modules]] to swich between MPICH and OpenMPI. You can however use the [[linux:sfinx_modules|environment modules]] to swich between MPICH and OpenMPI.
  
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 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. 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)</del> 
-</del>+
 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 [[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%%''.
  
paracluster.txt · Last modified: 2022/04/04 06:49 by jansen