Testbed Support for GridPP member institutes [mailto:TB-
> [log in to unmask]] On Behalf Of Rob Fay said:
> Good point. I was thinking of it as overallocating in reference to the
> number of actual cores, rather than threads, but in context yes, it
> would be underallocating. And while that doesn't seem to quite go with
> the description of LogicalCPUs as counting 'the number of computing
> units seen by the OS on the WNs.' (unless you consider 'the OS' to be
> 'the batch scheduler'...), I'm personally quite happy to go with that.
It's "as seen by the OS" in the sense that the OS will hopefully distribute processes across hyperthreads as well as cores.
Stephen
|