[slurm-dev] Re: Cores, CPUs, and threads: take 2

2017-09-13 Thread Christopher Samuel
On 14/09/17 11:07, Lachlan Musicman wrote: > Node configuration differs from hardware: CPUs=8:8(hw) Boards=1:1(hw) > SocketsPerBoard=8:1(hw) CoresPerSocket=1:4(hw) ThreadsPerCore=1:2(hw) OK, so this is saying that Slurm is seeing: 8 CPUs 1 board 1 socket per board 4 cores per socket 2 threads

[slurm-dev] Re: On the need for slurm uid/gid consistency

2017-09-13 Thread Douglas Jacobsen
I would suggest it is a more general requirement, not simply enforced by use of munge, which does imply a unified uid trust level across all nodes using the same preshared key, but also when jobs are started, they are started with a particular uid and other credentials (transmitted in the slurm

[slurm-dev] Re: Cores, CPUs, and threads: take 2

2017-09-13 Thread Lachlan Musicman
On 14 September 2017 at 11:10, Christopher Samuel wrote: > > On 14/09/17 11:07, Lachlan Musicman wrote: > > > Node configuration differs from hardware: CPUs=8:8(hw) Boards=1:1(hw) > > SocketsPerBoard=8:1(hw) CoresPerSocket=1:4(hw) ThreadsPerCore=1:2(hw) > > Hmm, are you

[slurm-dev] Re: Cores, CPUs, and threads: take 2

2017-09-13 Thread Christopher Samuel
On 14/09/17 11:07, Lachlan Musicman wrote: > Node configuration differs from hardware: CPUs=8:8(hw) Boards=1:1(hw) > SocketsPerBoard=8:1(hw) CoresPerSocket=1:4(hw) ThreadsPerCore=1:2(hw) Hmm, are you virtualised by some chance? If so it might be that the VM layer is lying to the guest about

[slurm-dev] Re: On the need for slurm uid/gid consistency

2017-09-13 Thread Christopher Samuel
On 13/09/17 04:53, Phil K wrote: > I'm hoping someone can provide an explanation as to why slurm > requires uid/gid consistency across nodes, with emphasis on the need > for the 'SlurmUser' to be uid/gid-consistent. I think this is a consequence of the use of Munge, rather than being inherent

[slurm-dev] Re: On the need for slurm uid/gid consistency

2017-09-13 Thread Philip Kovacs
I'm not trying to solve any problems, I'm just trying to understand the issue well enough so that I can make informed decisions as a downstream package maintainer.  With the need for uid/gid consistency, we either need to pass on the issue, i.e. package for use by root, or we need to do

[slurm-dev] Re: On the need for slurm uid/gid consistency

2017-09-13 Thread Janne Blomqvist
On 2017-09-12 21:52, Phil K wrote: I'm hoping someone can provide an explanation as to why slurm requires uid/gid consistency across nodes, with emphasis on the need for the 'SlurmUser' to be uid/gid-consistent. I know that slurmctld and slurmdbd can run as user `slurm` and that this would be