• Louhi (louhi.csc.fi)
• Murska (murska.csc.fi)
  

Louhi (Cray XT4) has been taken into use in year 2007 and is intended solely for massively parallel computing. It consists of 2028 computing cores which each have 1  or  2 GB RAM. Louhi is reserved for  codes  that benefit  from  fast interconnection in the system. Minimum size for parallel jobs in Louhi is 64 cored, maximum (without special arrangements) 512 cores. More detailed usage policy.

Murska is a supercluster for serial and parallel jobs of 1-256 cores. It has 1088 dual-core 2.6 Ghz AMD Opteron processors (2176 cores). 128 cores has 8 GB memory per core, 512 cores has 4 GB memory per core, 512 cores has 2 GB memory per core and 1024 cores has 1GB memory per core. Processors are connected via InfiniBand (4x DDR) network. More detailed usage policy

• Sepeli (sepeli.csc.fi)

Sepeli is a cluster which consists of large number of nodes each having two single or dual core processors. Each node has four to eight GB of memory. All nodes are connected by the Gigabit Ethernet network and the InfiniBand network. Sepeli is dedicated mainly to high-throughput small-memory serial batch programs and small parallel batch jobs. By default users can run parallel jobs up to 16 processes and scalability tests required for a right to use up to 128 processor cores.