# epouta Published articles for epouta. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## ePouta Flavour Halloween 2018 Communiqué DevFeed: [ePouta Flavour Halloween 2018 Communiqué]() Original publisher: [Read original article]() Author: Unknown (noreply@blogger.com) Published: 2018-10-19T10:51:00Z Content type: release Language: en Sources: [CSC - IT Center For Science - Cloud Team]() Topics: [GPU](), [cpu](), [Nvidia]() Tags: [applications](), [cpu](), [deprecated](), [epouta](), [espoo](), [flavors](), [gpu](), [hpc](), [newton](), [numa](), [nvidia](), [openstack](), [performance](), [pike](), [pouta](), [standard](), [westmere]() ### AI overview The communiqué announces changes to ePouta flavors, including public availability of the gpu.2.1gpu flavor with an NVIDIA Tesla V100 and NUMA-aware CPU and memory behavior. It also announces the deprecation of hpc.*.westmere flavors and recommends replacement flavors for new instances. ### Source excerpt We are making some changes to our flavor offering . Here's a summary of the changes: We now have even more GPUs in ePouta. The gpu.2.1gpu flavor is now publicly available and each has one NVIDIA Tesla V100 via PCI pass through. This flavor was already added in July but could only be accessed after requesting it from servicedesk. Now we are making them publicly available. The gpu.2.1gpu flavor is our first NUMA aware flavor. This should speed up CPU & memory heavy applications. Our current version (Newton) of OpenStack is not able to guarantee PCI devices from the same NUMA node too, this is possible to come when we get to Pike or later. Deprecation of hpc.*.westmere flavors This does not affect running instances but in the future you might see changes in the performance and therefor we suggest that you resize your flavor to a newer flavor type. You won't be able to launch new instances with the deprecated flavors. Flavors that will be deprecated and suggested replacement: hpc.medium.westmere - standard.xlarge hpc.large.westmere - hpc.4.10core hpc.xlarge.westmere - hpc.4.10core or hpc.4.20core hpc.largemem.westmere - hpc.4.20core or hpc.3.28core More information about the different flavors can be found here: https://research.csc.fi/pouta-flavours No known Copyright Please acknowledge 'Sir George Grey Special Collections, Auckland Libraries, 1-W682' when re-using this image. ## Ubuntu 18.04 images published in cPouta and ePouta DevFeed: [Ubuntu 18.04 images published in cPouta and ePouta]() Original publisher: [Read original article]() Author: Unknown (noreply@blogger.com) Published: 2018-10-17T07:30:00Z Content type: release Language: en Sources: [CSC - IT Center For Science - Cloud Team]() Topics: [Ubuntu](), [Cloud](), [ssh](), [Command-line interface](), [releases]() Tags: [cli](), [cloud](), [cpouta](), [diskimage](), [ed25519](), [epouta](), [horizon](), [image](), [lts](), [openstack](), [release](), [ssh](), [ubuntu]() ### AI overview Ubuntu 18.04 LTS images are available in the cPouta and ePouta cloud environments. The article explains that the images use Canonical's unmodified image, the default SSH user is ubuntu, and users can upload other Ubuntu cloud images or configure users with cloud-init and the OpenStack CLI. ### Source excerpt Hello Ubuntu fan boys and girls! An image containing latest LTS Ubuntu release (18.04 Bionic Beaver) is now available in c and ePouta! This time we opted to use the image provided by Canonical without any modifications. This means the user used to ssh in is now "ubuntu" instead of "cloud-user". In any case, trying to ssh in as root will tell you which user to ssh in as In case you want to try even newer versions of Ubuntu, say the "in-between" releases like 18.10 Cosmic Cuttlefish - head over to http://cloud-images.ubuntu.com/ , select the release and fetch the "cloudimg-amd64.img" - for example "cosmic-server-cloudimg-amd64.img" - which is a QCOW2 image. This you can then upload as an image in your c/ePouta project. Our user guide has some pictures and instructions how to work with and upload new images: https://research.csc.fi/pouta-adding-images To add your ssh key under a new "cloud-user" (in case you don't want to use ubuntu user) you can do something like below. First create a file that has the cloud-init user data. Then use that file as input to the openstack CLI tool. $ cat cloud-init.cfg #cloud-config users: - default: - default_user: name: cloud-user gecos: Cloud User sudo: ["ALL=(ALL) NOPASSWD:ALL"] ssh_authorized_keys: - ssh-ed25519 AAAAMYKEYQ user@email.example.org And then the openstack CLI command : $ openstack server create ubuntu1804 --flavor standard.small --image Ubuntu-18.04 --key mykey --security-group default --security-group ssh-group --user-data cloud-init.cfg It is if course possible to use horizon to supply the user data as well. p.s. Yes, ed25519 keys works this way! The web interface openstack horizon still does not support them yet. ## ePouta adds new VM flavors and server hardware DevFeed: [ePouta adds new VM flavors and server hardware]() Original publisher: [Read original article]() Author: Unknown (noreply@blogger.com) Published: 2018-07-03T09:23:00Z Content type: release Language: en Sources: [CSC - IT Center For Science - Cloud Team]() Topics: [cloud-infrastructure](), [virtual machines](), [Hardware](), [cpu](), [Nvidia]() Tags: [availability](), [cpu](), [epouta](), [espoo](), [flavors](), [gpu](), [hardware](), [hpc](), [nvidia](), [openstack](), [pouta](), [virtual-machines]() ### AI overview CSC announces new VM flavors and server hardware for ePouta, including standard flavors, Skylake-based HPC flavors, a 735 GB big-memory flavor, and NVIDIA Tesla V100 GPU instances available by request. ### Source excerpt We are pleased to announce the immediate availability of new lovely VM flavors in ePouta backed by new server hardware! A summary of the changes: introduced standard-flavors to ePouta; these are the most popular flavors in cPouta. introduced a new generation of hpc-flavors which have Skylake CPUs. a new generation of big memory flavor with 700GB of RAM. GPUs in ePouta. The flavors have 1 NVIDIA Tesla V100. These are only available per request to CSC Service Desk. deprecating hpc.mini, hpc.small and all Haswell hpc-flavors except hpc.fullnode.haswell. This does not affect the io.haswell-flavors. As always the current description of flavors can be found on https://research.csc.fi/pouta-flavours New Flavors The new standard flavors are of the same configuration that already exists in cPouta. This flavor is really cheap but not suitable for heavy workloads since the CPU is oversubscribed. This means that many virtual machines have to share the same CPUs. These instances are very good for running IT-services, web-servers, and doing development with. There will be standard.*-flavors (for example standard.small) with between 1GB and 16GB of RAM. These are the cheapest flavors we have in ePouta. These will most-likely be your go-to flavor for non-heavy workloads. We are introducing hpc4 flavors, the next generation of HPC flavors. They are named hpc.4.80cores, hpc.4.40cores, hpc.4.20cores and hpc.4.10cores. These are very similar to the hpc.3.* flavors, with additional sizes and the newer Skylake CPU generation. The biggest instance has 50% more cores and memory (45, 90, 180 and 360 GB) than the previous generation. These flavors will probably be your go-to flavor for computational workloads. The new big memory flavor is called tb.4.735RAM and has 80 hyper-threaded Skylake cores, 735GB of memory and a whopping 2500GB of local SSD disk space. The SSD disks are configured in a RAID0 configuration which means that they are really fast but if the disk fails your data will be lo ## New I/O flavors in ePouta DevFeed: [New I/O flavors in ePouta]() Original publisher: [Read original article]() Author: Jukka Nousiainen (noreply@blogger.com) Published: 2017-07-07T12:43:00Z Content type: release Language: en Sources: [CSC - IT Center For Science - Cloud Team]() Topics: [cloud-infrastructure](), [IO](), [Persistence](), [Apache Cassandra](), [datasets](), [Server]() Tags: [cassandra](), [clusters](), [cpouta](), [epouta](), [persistence](), [ssd](), [storage]() ### AI overview The I/O Virtual Machine flavors previously released in cPouta are now available in ePouta. They use SSD-backed striped RAID0 storage, providing high I/O performance without persistence or VM health guarantees if a node or disk fails. They are suited to clustered software such as Hadoop and Cassandra, with anti-affinity server groups recommended for node separation. ### Source excerpt About a year ago we released the I/O Virtual Machine flavors in cPouta. As of July, similar flavors are now also available in ePouta; you can find an exhaustive list here. The I/O flavors are provided with the same disclaimer as with their cPouta counterparts: both the root disk and the ephemeral disk for data storage are hosted on a striped (RAID0) array of SSD disks. That means you get a lot of I/O, but absolutely no guarantees for the persistence or health of VMs in case a node or a disk breaks. Thus these flavors are most natural to use with software which clusters nicely, such as Hadoop or Cassandra. To further ensure each VM in a cluster ends up on separate nodes, we recommend creating an anti-affinity server group.