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institute_lorentz:xmaris [2020/03/26 14:38]
lenocil [Quantum computing]
institute_lorentz:xmaris [2020/04/01 15:25] (current)
lenocil [Run a multiprocessing application]
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 :!: External research groups to the Lorentz Institute are strongly encouraged to explore other HPC possibilities,​ such as the [[https://​wiki.alice.universiteitleiden.nl/​index.php?​title=ALICE_User_Documentation_Wiki|ALICE HPC cluster]] of the University of Leiden. :!: External research groups to the Lorentz Institute are strongly encouraged to explore other HPC possibilities,​ such as the [[https://​wiki.alice.universiteitleiden.nl/​index.php?​title=ALICE_User_Documentation_Wiki|ALICE HPC cluster]] of the University of Leiden.
  
-Xmaris is optimised for [[https://​en.wikipedia.org/​wiki/​Thread_(computing)#​Multithreading|multithreading applications]] and  [[https://​en.wikipedia.org/​wiki/​Embarrassingly_parallel|embarrassingly parallel problems]] but there have been some recent investments to improve nodes interconnection communications to enable [[institute_lorentz:​xmaris#​parallelism_101|multiprocessing]].+Xmaris is optimised for [[https://​en.wikipedia.org/​wiki/​Thread_(computing)#​Multithreading|multithreading applications]] and  [[https://​en.wikipedia.org/​wiki/​Embarrassingly_parallel|embarrassingly parallel problems]] but there have been some recent investments to improve nodes interconnection communications to enable [[institute_lorentz:​xmaris#​parallelism_101|multiprocessing]]. Currently, multiprocessing is possible on maris0[78-81] which are interconnected via an InfiniBand EDR switch.
  
 Xmaris is the successor of the maris cluster, renamed with a prefix ''​x''​ because its nodes deployment is automated using the [[https://​www.xcat.org/​|xCAT]] software. Less formally, the presence of the ''​x''​ prefix also suggests the time of the year when xmaris was first made available to IL users, that is Christmas (Xmas). Xmaris is the successor of the maris cluster, renamed with a prefix ''​x''​ because its nodes deployment is automated using the [[https://​www.xcat.org/​|xCAT]] software. Less formally, the presence of the ''​x''​ prefix also suggests the time of the year when xmaris was first made available to IL users, that is Christmas (Xmas).
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 </​code>​ </​code>​
  
 +==== Run a multiprocessing application ====
 +
 +<​code>​
 +srun -p ibIntel -N 4 -n4 -c1 --mem=16000 --pty bash -i
 +module load foss
 +ulimit -l unlimited
 +mpirun --mca btl openib,​vader,​self <​YOUR_MPI_APP>​
 +</​code>​
 +
 +https://​www.open-mpi.org/​faq/?​category=openfabrics#​ib-btl
 ===== Suggested readings ===== ===== Suggested readings =====
  
institute_lorentz/xmaris.1585233488.txt.gz ยท Last modified: 2020/03/26 14:38 by lenocil