Hi there, thanks for your response.
BeeGFS indeed looks like a good call option, though realistically I can only afford to use a single node/server for it. Would it be feasible to use zfs as volume manager coupled with BeeGFS for the shares, or should I write zfs off all together? thanks again, best, leo On Thu, 10 Aug 2023 at 21:29, Bernd Schubert <bernd.schub...@fastmail.fm> wrote: > > > On 8/10/23 21:18, leo camilo wrote: > > Hi everyone, > > > > I was hoping I would seek some sage advice from you guys. > > > > At my department we have build this small prototyping cluster with 5 > > compute nodes,1 name node and 1 file server. > > > > Up until now, the name node contained the scratch partition, which > > consisted of 2x4TB HDD, which form an 8 TB striped zfs pool. The pool is > > shared to all the nodes using nfs. The compute nodes and the name node > > and compute nodes are connected with both cat6 ethernet net cable and > > infiniband. Each compute node has 40 cores. > > > > Recently I have attempted to launch computation from each node (40 tasks > > per node), so 1 computation per node. And the performance was abysmal. > > I reckon I might have reached the limits of NFS. > > > > I then realised that this was due to very poor performance from NFS. I > > am not using stateless nodes, so each node has about 200 GB of SSD > > storage and running directly from there was a lot faster. > > > > So, to solve the issue, I reckon I should replace NFS with something > > better. I have ordered 2x4TB NVMEs for the new scratch and I was > > thinking of : > > > > * using the 2x4TB NVME in a striped ZFS pool and use a single node > > GlusterFS to replace NFS > > * using the 2x4TB NVME with GlusterFS in a distributed arrangement > > (still single node) > > > > Some people told me to use lustre,but I reckon that might be overkill. > > And I would only use a single fileserver machine(1 node). > > > > Could you guys give me some sage advice here? > > > > So glusterfs is using fuse, which doesn't have the best performance > reputation (although hopefully not for long - feel free to search for > "fuse" + "uring"). > > If you want to avoid complexity of Lustre, maybe look into BeeGFS. Well, > I would recommend to look into it anyway (as former developer I'm biased > again ;) ). > > > Cheers, > Bernd > >
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