= Compute Resources = <> * In general, the offers are limited to members of I-MATH and their students. * Other UZH members are welcome to contact support@math.uz.ch. * First time user: contact support@math.uzh.ch first. == Reservations == * Short (<1day) computations don't need a reservation, * Longer (>1day) are reccomended to do reservation. * With reservation: In case of maintenance need, we typically schedule the maintenance according the needs of the user. * Without reservation: We try to contact the user and wait several hours for an answer. * General: if we see running computations, we always contact the user first (independent if a reservation exist). If the user doesn't answer (weekend, holiday, ...) we decide by our own what to do. == Offers == * For small / ad hoc computations, just start the compute software via the thinlinc environment. * For medium computations, please contact support@math.uzh.ch to ask for the best fitting possibilty and to reserve nodes. * For large computations and professional support please check http://www.s3it.uzh.ch/. == Resources at IMATH == || host || CPU type || cores || RAM || local disk || date || purpose || CPU specs || || asprey || 2 x Intel Xeon 4C E5-2643 3.30 GHz || 16 (HT enabled) || 128 GB || 73 GB || 12/2012 || student: matlab, mathematica, maple, R || [[http://ark.intel.com/products/64587/Intel-Xeon-Processor-E5-2643-10M-Cache-3_30-GHz-8_00-GTs-Intel-QPI|E5-2643]] || || baxter || 8 x Intel Xeon 8C X7550 2.00 GHz || 64 (HT disabled) || 512 GB || 300 GB || 10/2010 || research, magma || [[http://ark.intel.com/products/46498/Intel-Xeon-Processor-X7550-18M-Cache-2_00-GHz-6_40-GTs-Intel-QPI?wapkw=x7550|x7550]] || || crous || 8 x Intel Xeon 10C E7-2850 2.0 GHz || 80 (HT disabled) || 2 TB || 300 GB || 05/2013 || research || [[http://ark.intel.com/products/53573/Intel-Xeon-Processor-E7-2850-24M-Cache-2_00-GHz-6_40-GTs-Intel-QPI?wapkw=e7-2850|E7-2850]] || || david || " || " || " || " || " || " || " || || estonia0 || 2 x Intel Xeon 6C E5-2640 2.50 GHz || 12 (HT disabled) || 256 GB || 2TB || 05/2013 || research || [[http://www.intel.com/buy/us/en/product/components/intel-xeon-processor-e5-2640-15m-cache-250-ghz-720-gts-intel-qpi-250678?wapkw=e5-2640#tech_specs|E5-2640]] || || estonia1 || " ||" || " || " || " || " || " || || estonia2 || " || " || " || " || " || " || " || || estonia3 || " || " || " || " || " || " || " || || georgia0 || " || " || " || " || " || " || " || || georgia1 || " || " || " || " || " || " || " || || georgia2 || " || " || " || " || " || " || " || || georgia3 || " || " || " || " || " || " || " || || iran0 || " || " || " || " || " || " || " || || iran1 || " || " || " || " || " || " || " || || iran2 || " || " || " || " || " || " || " || || iran3 || " || " || " || " || " || " || " || || jordan0 || " || " || " || " || " || professor & assistant: matlab, mathematica, maple, R || " || || jordan1 || " || " || " || " || " || " || " || || jordan2 || " || " || " || " || " || courses || " || || jordan3 || " || " || " || " || " || courses || " || = Concept = == Access == * The compute nodes can be accessed by SSH only from '''inside''' I-MATH. * Use [[thinlinc]] * matlab, mathematica, maple, R, rstudio: just start the application via menu 'Applications > Science > ...' - you'll automatically redirected to the appropriate compute server. * For non standard compute software please first log on the compute node via 'ssh', than start the program. * SSH: Log on 'ssh.math.uzh.ch' and jump to the compute node again via 'ssh'. == Operating System == * Ubuntu LTS (Linux) - all compute servers. * Very very limited software might be installed on some Windows virtual machines. == Storage == * If you need more than 1GB disk space, please contact support@math.uzh.ch. * Remote (NFS) * <1GB disk space: Personal Home directory * >1GB disk space: `/compute/` * Local * `/export/user/` == Programs / Software == * All compute servers use the same applications and versions as installed on the thinlinc terminals. * Please report missing or outdated software or wishes to support@math.uzh.ch. * There is no Intel C or Fortran Compiler. * If you need other program versions than the default one: open a terminal, type the program name followed by two 'TAB' presses: this will show all available versions of the specified program. == Parallel computing == * Cluster software * Not installed / offered at I-MATH. * Various MPI packages and libs are installed. Compiling and preparation to run programs later on a distributed compute cluster are possible. * Some programs, like `matlab`, offers limited builtin auto parallelization. * All of the compute nodes are shared memory machines. It's reasonable to start as many programs in parallel as long the `load` is less or equal the number of cores. * Determine the load by using the command `uptime` via a terminal. The last three numbers are the average number of jobs (=load) in the run queue over the last 1, 5 and 15 minutes. {{{ $ uptime 15:55:20 up 22 days, 24 min, 1 user, load average: 11.97, 11.73, 11.62 }}}