> On Feb 26, 2015, at 5:48 PM, Barry Smith <[email protected]> wrote: > > What is a "login node"? Is it a node you log in to compile code? So its > purpose is pretty much only to compile code?
Compile, submit batch jobs, minimal postprocessing. > What kind of load does it have? If people just stay logged into all the time > then they may not be contributing any load. Yeah. top - 20:16:55 up 10 days, 1:48, 129 users, load average: 3.08, 2.69, 2.53 Tasks: 1254 total, 5 running, 1220 sleeping, 29 stopped, 0 zombie Cpu(s): 17.0%us, 3.0%sy, 0.0%ni, 79.4%id, 0.3%wa, 0.0%hi, 0.2%si, 0.0%st Mem: 65920824k total, 52860736k used, 13060088k free, 1740012k buffers Swap: 4194296k total, 0k used, 4194296k free, 34749468k cached > It's a 16-core beast, not much different from the compute nodes: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 45 model name : Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz stepping : 7 cpu MHz : 2699.953 cache size : 20480 KB physical id : 0 siblings : 8 core id : 0 cpu cores : 8 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes > BTW: PETSc does a parallel compile (which is why it is so fast) did the > sysadmin complain ? No he didn't but I don't want to tempt him. I'll talk to him tomorrow. Victor.
